Detroit 60 series starting problems

May 21, 2012 · have 60 series detriot with a starting problem , it loses prime have replaced lines shut offs , and check valve on return stiil bleeds of after a few hours of sitting. Could it be a injector bleeding off. It misses for a short time when it starts, and i have to hit it with starting fluid to get it going if it sits for a few hours.

The #2 factor in getting better fuel mileage is to AVOID RUNNING THE ENGINE WHEN YOU ARE NOT MOVING. The #3 factor in getting better fuel mileage is the engine. Everyone wants to look at the engine first , because they think the part that burns the fuel is the most responsible for fuel economy.Section 1.28Camshaft and Camshaft Bearing. The Series 60 camshaft is located on top of the cylinder head, just below the valve cover. The camshaft actuates the intake and exhaust valves and injector operating mechanism. See Figure "Camshaft and Related Parts" .‪. Figure 1.Section 2.10Diesel Fuel Filters (Spin-On) Two spin-on type filters are used on the Series 60 engine. The first in the fuel flow is a strainer, and the second is a filter. Although they are not marked as such, the threaded sleeves that accept the cartridges are different sizes to prevent mismatching. The primary filter has a 1 in. x 12 thread.Make sure the filters are full. Crack the small line on the transfer pump and spin it over. Maybe a SMALL shot of ether and see if fuel comes out. Pump is on the back of the compressor. Big in, small out. 2005 250 Super Duty Crew. White and Grey. ARP studs, EGR Delete, and SCT from Vivian. CCV re-route, and 4" Magnaflow turbo back.My series 60 DD is in a Volvo truck (HDT towing a heavy Teton), not a coach. Mine has 4 full size 12 vdc starting batteries and never hesitates when starting up, down into 30 degree temps. I only use the block heater when its below freezing. You didnt say how many starting Batts are in your coach. thats a big engine and big starter, that takes ...

A dual spin-on lube oil filter adaptor assembly with a temperature-sensitive thermatic oil control valve is available on Series 60,… Series 60 Valve Guide Parts Valves are positioned and aligned by replaceable valve guides pressed into the cylinder head.40 is 8.7L (As the tag reflects.) 60 is about 14L (Below is the info I got while research I think either a Executive. or Signature Monaco) Series 60 Detroit Diesel 515 HP Engine with Allison® 4000 MH 6-Speed. World Transmission and Electronic Shifter; Torque: 1,650 lbs./ft.; Engine Displacement: 858" Cu. In.My 2006 Freightliner Columbia Detroit 60 series having cruise control problem. The cruise has only working at an idle, - Answered by a verified Technician ... Hi sir I have 2006 freightliner Columbia highway truck Detroit series 60 14l engine problem is I changed transmission now problem start is truck rpm going up and down cruse control ...Series 60 - MISFIRING CYLINDER - FAULTY FUEL INJECTOR. To determine if a faulty fuel injector is causing the cylinder to misfire, perform the following steps: 1. Connect to DDDL 7.0. 2. Start the engine. 3. From the Select Menu, scroll to select ENGINE and press the ENTER key. 4.Series 60 Coolant Level Sensors. The Coolant Level Sensor (CLS) is a two-piece sensor for DDEC II, and a single sensor for DDEC III/IV. The sensor probe (supplied by the vehicle, vessel or equipment manufacturer) is mounted in the top tank or overfill tank. For DDEC II the sensor module is mounted on the vehicle. The module sends an electrical ...Jan 15, 2013 · A 60 series needs 195 RPM to start and it needs an SRS signal. when you try starting it, look, with a flashlight into the fuel tank, you will see two tubes usually the front one is the return, if it is sucking air it will blow out air. Never in all my years of working on S60 have I seen a check valve fail. It is a ball and seat with a spring. A 60 series needs 195 RPM to start and it needs an SRS signal. when you try starting it, look, with a flashlight into the fuel tank, you will see two tubes usually the front one is the return, if it is sucking air it will blow out air. Never in all my years of working on S60 have I seen a check valve fail. It is a ball and seat with a spring.To determine if the replaced oil resolved starting difficulty, attempt to start and run the engine. 1. If the engine starts and runs, no further troubleshooting is required. Shut down the engine. 2. If the engine fails to start and run, check the fuel supply valve; refer to section 4.7.

Page 82: Service Publications. To purchase a copy of any of these publications, contact an authorized The service manual covering Detroit Detroit Diesel distributor in the U.S. or Diesel Series 60 engines is listed in Canada. Check the Yellow Pages under Table 18. Also listed are reference “Engines, Diesel”...1999 freightliner 12.7 detroit had a problem starting driver pulled the batteries down pretty low and I could smell something electrical burning I installed new batteries truck still would start but w ... having a power problem with a detroit desiel 60 series. check it with a computer .Its not injectors or turbo.4. Start and bring engine up to operating temperature (over 140°F/60°C). 5. Verify operation is satisfactory and no warning lamps illuminate. If warning lamps illuminate, troubleshoot the codes. If assistance is required, call the Detroit Diesel Customer Support Center at 313-592-5800.Have a 60 series detroit in a 05 western star that keeps going through ecms. Original one went. Dealer installed new one - Answered by a verified Technician ... They installed another ecm that now has 315 hrs on it and problems are starting again. No start yesterday morning left truck for a couple hrs. Flashed codes got 86 and 21 pulled ecm ...Series 60 - HIGH ENGINE COOLANT TEMPERATURE - FAN BELTS ARE INCORRECTLY ADJUSTED. To determine if misadjusted fan belts are causing high engine coolant temperature, perform the following: 1. Test fan belt(s) tension;…And I'm understanding that Detroit's own oil is bottled by delvac. A friend is running Schaefer's oil in his fresh engine, claims that his consumption dropped from running Chevron. But, it's not readily available on the road. My current engine has 800k on it, I service every 20k, running Chevron 15w-40, I use 2 gallons of oil between changes.

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Detroit DDEC V ECM Replacement: A Warning Sign ⚠️ Is your Detroit Series 60 14L experiencing starting issues? Signs of a failing ECM: ⚙️ Starting problems 🚚 Engine performance issues 🚨 Warning lights on the dashboard The solution: replacing the ECM ensures a reliable restart and gets your vehicle back on the road.As such, Detroit 60 Series bearing problems are most common on the 11.1L and 12.7L variants of the engine. Detroit later increased idle speed slightly and improved oil pressure at lower RPM’s. That said, later engines can still run into bearing issues but it’s much less common.A cylinder cutout test may be run with either a Pro-Link reader or the Detroit Diesel Diagnostic Link (DDDL) PC software program. For current test steps, please refer to Series 60 service manual (6SE483) or Series 50 service manual (6SE50). Test options include an automatic test (all cylinders are automatically cutout in sequence) or a manual ...This TRS is called crank sensor on a car and I'm sure all motors with a ECM on cars, trucks and probably even late model motorcycles will have a crank sensor...Hi I have a Detroit 12.7L S60 engine, when the temperature is below 150F it runs well up to 2100rpm. As the temperature approaches 150F ,the engine gives out popping sounds and white smoke as you accelerate above 1500rpm.If you disconnect the intake temperature sensor , the popping sound stops and the engine runs well and even accelerate up to …

Advertisement In theory, rail guns are the perfect solution for short- and long-range firepower. In reality, they present several serious problems: Advertisement A coil gun (or Gau...Contact an authorized Detroit Diesel service outlet for details. The current adaptorless air compressors have replaced the original air compressors and adaptors on the majority of Series 60 on-highway engines. This change took effect with unit serial number 6R210293, built November 30, 1994.There are more and more ways for the global elite to use going green as an excuse to splurge on luxury. There are more and more ways for the global elite to use going green as an e...The 300 Series Landcruiser is a popular choice among off-road enthusiasts and adventure seekers. Known for its ruggedness and reliability, this vehicle is built to withstand the to...Series 60 - STARTING DIFFICULTY - ENGINE ROTATES - PLUGGED FUEL FILTER(S) To determine if a plugged fuel filters is causing starting difficulty, perform the following steps: 1. Disconnect the fuel line…Im having trouble with a Detroit series 60 no start, no smoke. checked the srs and the trs, checked and load tested all - Answered by a verified Technician. ... Having problem starting Detroit 60 series 12.7l engine, head gasket was replaced. I had wayne from here assist me earlier. I have narrow it down to the injector not getting a signal.When your refrigerator starts acting up, it can be a major inconvenience. From spoiled food to increased energy bills, a malfunctioning fridge can cause a lot of trouble. That’s wh...Nov 2, 2014 · Instruction on how to change your pers sensor located below the air compressor on it detroit 60 series 12.7 motor To determine if aerated fuel is causing starting difficulty, perform the following steps: ‪. Disconnect the fuel line return hose from the fitting located at the fuel tank; refer to OEM guidelines. Place the opened end of the fuel line into a suitable container. Start the engine. Run the engine at 1000 r/min.

Problem solved. Happy trucker. Well i hope this helps even just one person. If it does it was worth it. If any one has any input for me that i may need correcting please email me. ALways like to hear of better ways. ... 60 series Detroit Diesel won't start - tommyw-5088: 1/24/2010 18:57. Re: 60 series Detroit Diesel won't start - milofarmer1: 1 ...

Series 60 – DDEC III/IV (Series 60G Engine) Series 60 – DDEC III/IV; Series 60 – DDEC II; Series 60 – DDEC I; Series 40E Troubleshooting – Section 3.1 Injection Control Pressure System Operation; Series 60 – DDEC® V ELECTRONIC CONTROL UNIT – SERIES 60 2004; Series 60 – Fuel Lines; Series 60 – Section 2.49 …If it doesen't, or pulses, or jijjles a lot you have 1 of 2 problems. #1- you need a new V-pod, found at the lower RS of the engine block by the oil pan rail. crawl under and look for it. #2- the turbo actuator leaks air, or does …Hey Guys. I have a Series 60 Detroit engine in an '06 Prevost motorcoach. A few weeks ago it started losing prime. My mechanic has replaced the check valve coming from the fuel tank, no help. Another Detroit shop checked computer and said Syncronous Run Sensor needed replacing, no help. ... The problem typically shows up as a hard starting ...Here I show you what I have learned helps with a radiator fan that won't shut off and stays on constantly..The timer on the Kenmore Series 80 washing machine has a unique problem in that it tends to pop out to the off position on its own. Before tearing into the machine, turn the dial a...About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...You two aren't the only ones; trust us. See what problems are common in marriage communication, plus how to resolve them, starting today. You can’t build a house without the founda...May 22, 2019 · Series 60 – Section 4.8 Radiator; Series 60 – Section 4.5 Coolant Pressure Control Cap; Series 60 – Section 4.6 Engine Cooling Fan; Series 60 – Section 4.4 Thermostat; Series 60 – Section 4.2 Water Pump (Gear-Case Mounted – 1991 and Later) (GCM) Series 60 – Section 4.3 Water Pump (Front Mounted) (Fm) Series 60 – Section 4.1 ... Car electrical wiring problems can be frustrating and inconvenient. They can leave you stranded on the side of the road or prevent your vehicle from starting altogether. Identifyin...Series 60 Water Pump Parts. An impeller is pressed on one end of the stainless steel drive shaft. The other end of this shaft has internal threads, and a retaining bolt secures the water pump drive gear to the shaft. Two tappered roller bearing assemblies are used to support the shaft. An O-ring, located in a groove in the water pump housing ...

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The truck is a 2008 Freightliner Colombia with a Detroit 60 series with 630k miles. The problem I am having with the truck is: 1. wont perform auto regen. 2: will not finish a park regen. I took the truck to a well known independent Detroit mechanic which was referred by couple of drivers in the area.My 2006 Freightliner Columbia Detroit 60 series having cruise control problem. The cruise has only working at an idle, - Answered by a verified Technician ... Hi sir I have 2006 freightliner Columbia highway truck Detroit series 60 14l engine problem is I changed transmission now problem start is truck rpm going up and down cruse control ...Nov 3, 2009 · If it doesen't, or pulses, or jijjles a lot you have 1 of 2 problems. #1- you need a new V-pod, found at the lower RS of the engine block by the oil pan rail. crawl under and look for it. #2- the turbo actuator leaks air, or does not respond to the air supplied from that V-pod. amishdonkeys Discussion starter. 247 posts · Joined 2009. #1 · Oct 9, 2011. Have a 1995 379 Pete w/ a 12.7L 60 series detroit. Jake brake and cruise control doesn't work. There is power to dash switchs for jake and cruise. Power to the clutch sensor. Clutch sensor was tested and checked out OK.To help shoppers and boost business downtown, a supermarket in Detroit is offering free Uber rides home if you spend $50 on groceries. By clicking "TRY IT", I agree to receive news...Detroit Engine - Series 60. DDC Code # (Flashed) = 61. PID = S1. FMI = 0. Fault Description = Injector #1 - Response Time Long. #DESCRIPTION OF FLASH CODE 61. Flash Code 61 indicates that the time it takes from when the DDEC IV ECM requests an Injector be turned on to when the Injector solenoid valve actually closes is longer than the high ...Disassemble the rocker cover as follows:‪. Disengage the clip that holds the crankcase vent breather element in the valve cover by pressing the center of the spring steel retaining clip outward and removing the straight end. Rotate the clip upward to remove the curved end. Remove the wire mesh element. Section 1.6.7.About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ... ….

Posted 3/24/2012 00:15 (#2303337 - in reply to #2303323) Subject: Re: problems with 60 series detroit in western star. NC ND. the computer can be set to limit power in certain gears, might want to have a shop check the engine/transmission power settings, have a friend who set his truck up that way, just can't remember if he lowered the power in ...The 300 Series Landcruiser is a popular choice among off-road enthusiasts and adventure seekers. Known for its ruggedness and reliability, this vehicle is built to withstand the to...85. Jun 2, 2019. 0. Hi guys my friend has a Detroit 60 12.7 his oil pressure at idle is 20psi and down the road with the trailer not yet with a load is 50 psi going down thr road his Oil pressure, coolant and rpms gauges sometimes work and sometimes do not but when they are indeed working the oil pressure shows that is it really low for that ...4. Start and bring engine up to operating temperature (over 140°F/60°C). 5. Verify operation is satisfactory and no warning lamps illuminate. If warning lamps illuminate, troubleshoot the codes. If assistance is required, call the Detroit Diesel Customer Support Center at 313-592-5800.Series 60 Engine Oil Pressure Sensor. The Oil Pressure Sensor (OPS) is installed into the main engine oil gallery. A typical location is the left rear corner of the cylinder block. The OPS sends an electrical signal to the ECM telling it what the engine oil pressure is at any given speed. A low oil pressure signal exceeding seven seconds is ...1. HEUI Injector - The HEUI injector uses hydraulic energy (as opposed to mechanical energy from the engine camshaft) from pressurized engine lube oil for injection. The pressure of the incoming oil (800 to 3300 psi) controls the rate of injection, while the amount of fuel injected is determined by the ECM. 2.301 Moved Permanently. cloudflareWrap a rage around the loose fitting, Turn the engine over for 15 seconds. Check the fuel filter on the engine, Keep the filter full. Repeat turning over for 15 seconds. After the 3rd or 4th try the rag on the return line should be wet, You can now remove the rag and tighten the fitting.Wrap a rage around the loose fitting, Turn the engine over for 15 seconds. Check the fuel filter on the engine, Keep the filter full. Repeat turning over for 15 seconds. After the 3rd or 4th try the rag on the return line should be wet, You can now remove the rag and tighten the fitting.60 series Detroit won't start. Have a 11.1 60 series Detroit in a 1997 Volvo truck. Parked it in the shed and now it won't start. Turns over fine but won't fire. Fuel is coming out of the return line on the back of the head when we crank it over. Replaced the TRS and SRS sensors and still no luck. Detroit 60 series starting problems, S60 1999 no egr Detroit 12.7 Runs rough while under load only. ... It happens a lot on series 60. allan5oh, May 25, 2016. allan5oh, May 25, 2016 #8. RubyEagle, rbrauns and CellNet Thank this. May 25 ... I am putting it in the shop in the morning. Hope it's something simple but I am starting to think maybe I'm throwing good money after bad ..., 1. Place the red lead of a voltmeter to the solenoid "BAT" terminal. 2. Place the black voltmeter lead to the starter ground terminal, 3. Engage the starter switch. 4. View the voltage reading on the meter. If the voltage is less than specification while cranking the engine, replacement is necessary;, 1.Start and run the engine until normal operating temperature is reached. Stop the engine. 2. Disconnect the batteries. 3. Disconnect the fuel pump feed line from the fuel tank. Place a suitable container under the line to catch the spilling fuel. Turn the 1⁄4 turn valve off on the outlet fitting of the secondary fuel filter., I have a 2011 Freightliner Columbia series 60 12.7 DET engine cranks does not start it gives me a no eng and a fault 01 on the LCD screen where it show odometer reading I get no volt reading the only ... Same problem 2001 friet. With the 12.7 detroit. No throttle response, replaced throttle position sensor and the wiring harness, but didnt fix ..., Section 1.24.2.1. Check Engine Timing. Gear train noise is usually an indication of excessive gear lash, chipped, pitted or burred gear teeth, or excessive bearing wear. Therefore, when noise develops in a gear train, the gear case cover should be removed and the gear train and its bearings inspected., Jul 25, 2012 · Just bought truck and drove it home 400 miles, been driving it around for about a week. Went to move it the other day. It started just fine, then shut off after 15 seconds. It will only start back with starting fluid, then dies when you stop spraying. Transfer pump is pumping fuel, bypassed low coolant sensor. , Heavy Duty. $ 33.99. Qty: ^. Details. In Stock. Add to Cart. Free - Detroit 60 Series Engine 12.7 L Troubleshooting Guide. We distribute new heavy duty starter motors for Detroit Diesel Series 60 12.7 L engines at distributor price. We ship worldwide parts for Detroit Series 60 engines., Warranty. Every new Series 60 engine is covered by the following standard warranty: Engine: 2 years, unlimited miles, including 100% parts and labor. Accessories (if supplied by Detroit): 2 years, 100,000 miles, including 100% parts and labor. Major components: 5 years, 500,000 miles, including parts and 100% of Service outlet's normal charge., Hey Guys. I have a Series 60 Detroit engine in an '06 Prevost motorcoach. A few weeks ago it started losing prime. My mechanic has replaced the check valve coming from the fuel tank, no help. Another Detroit shop checked computer and said Syncronous Run Sensor needed replacing, no help. ... The problem typically shows up as a hard starting ..., If it doesen't, or pulses, or jijjles a lot you have 1 of 2 problems. #1- you need a new V-pod, found at the lower RS of the engine block by the oil pan rail. crawl under and look for it. #2- the turbo actuator leaks air, or does …, Hard start on a series 60. New injectors, head, bullgear, sensors, fuel system. Also tested with known good ECM and program. It was approximately 15C (..., 23. Feb 5, 2012. elwood nj. 0. 2001 Volvo with s60 . After sitting over night will not start and Davco filter empty. I replaced check valve at Davco filter plugged with junk. Did not help. Replaced check valve at back of head., Problem starting 12.7 Detroit Jump to page : 1 Now viewing page 1 [50 messages per page] View previous thread:: View next thread Forums List-> Machinery Talk: ... I have a 60 series that had starting issues last harvest. It would start with ether but it was either the crank sensor or cam sensor. Replaced them both and now it starts:, 1,783. Originally Posted by dogbone. Hope this helps anyone with a similar problem... Had a daunting intermittent issue where the idle on my (late 1996 build) 60 Series would "stutter" from the normal 700 rpm up to 1000 rpm the normal high idle speed. I would not characterize this as a galloping idle, which is a different issue that I also ..., Page 16 Initial Engine Start CAUTION: To start a Series 60 DDEC engine be To avoid personal injury when using sure the transmission is in neutral or ether during an engine …, The Detroit Diesel 60 Fault Codes guide is an essential resource for anyone working with these engine models. It empowers technicians, mechanics, and fleet managers with the knowledge and instructions necessary to diagnose, troubleshoot, and resolve issues related to the Series 60 engine, ensuring optimal performance and reliability. Language: RU., Subject: 60 Series Detroit fuel bleeding back. Have a 2000 model year 12.7 in a 9900I international and if it's been sitting more than a couple hours it needs a sniff of ether to get it started. I've replaced all the fuel lines from the tanks to the head and back aswell as the check valve on the back of the head a couple years ago., Generally, the drive by the wire system often comes with more wiring issues, as well as TPS problems. For instance, the engine brake may fail. At this point, programming is required after replacing the engine brake. Another issue with the Detroit diesel series 60 is zero throttle or having a limited throttle response., Oct 20, 2021 #1. patrick224 Bobtail Member. 5. 3. Mar 28, 2016. 0. I've replaced crank sensor, timing sensor, fuel pump, check and clean the fuel line with ball …, Series 60 – STARTING DIFFICULTY – ENGINE ROTATES – CRANK NO START. The engine cranks but does not start. Check for the following: Low Fuel Level. …, There are three basic checks that should be performed: Check for active/historic codes. All causes need to be checked once the fault is identified. Record …, Thanks to all who make the rest of us look smart. I have a 1994 Freightliner with the Detroit 60 Series engine which has run perfect for the past 5 years. All of a sudden, the engine will start to drop cylinders after 15 minutes and then quit running altogether. You let it sit for an hour and cool down and then it starts right up and runs perfect., Series 60 DDEC V Troubleshooting - Section 20.6 Diagnostic Request Switch Inoperative; Series 60 DDEC V Troubleshooting - Section 20.4 Amber Warning Lamp and Red Stop Lamp Fault; Series 60 DDEC V Troubleshooting - Section 20.2 Engine Cranks But Will Not Start; Series 60 DDEC V Troubleshooting - Section 20.3 Erratic Performance and No ..., 1. Effective with 6R56762, a manually operated fuel shutoff valve replaced a check valve. A PRO-CHEK ® valve may be installed at this location to remove air. ‪. 2. Effective with 6R8950, the ECM/EDU cooler unit was removed from all Series 60 engines used in on-highway applications. ‪. 3. Effective with unit 6R13060, a fuel system check ..., Series 60 DDEC V Troubleshooting - Section 77.2 Troubleshooting Flash Code 87, PID 73/FMI 4; Series 60 DDEC V Troubleshooting - Section 78 Flash Code 89 - AECL Sensor Fault or Fuel Inlet Restriction High; Series 60 DDEC V Troubleshooting - Section 78.1 Description of Flash Code 89, PID 111/FMI 12 & PID 95/FMI 0, Remove dog house from floor pan, a 3/4 wrench, 15/16 wrench, and a 7/8 wrench are required. Ck valve is located on back of cyl head, it's a small stainless steel valve with a direction arrow, Detroit diesel logo and part number is 23516918 274399c. Oem part is around $250-$350. Aftermarket around $60., IHOP and Applebee's will open a combination restaurant in downtown Detroit. By clicking "TRY IT", I agree to receive newsletters and promotions from Money and its partners. I agree..., 1.Start and run the engine until normal operating temperature is reached. Stop the engine. 2. Disconnect the batteries. 3. Disconnect the fuel pump feed line from the fuel tank. Place a suitable container under the line to catch the spilling fuel. Turn the 1⁄4 turn valve off on the outlet fitting of the secondary fuel filter., 3600 S. Noah Dr. Saxonburg, Pa. 16056. PittsburghPower.com, 724-360-4080. Share. Back to News. Even though the Detroit Diesel Series 60 was discontinued in 2011, it’s still one of the most common engines for Class 8 trucks. Some may not know about the fascinating story behind these engines. At the onset of WWII General Motors created the GM ..., Reinstall the SFT Sensor, refer to the Series 60 Service manual (6SE2007), fuel system chapter. Analyze the measured fuel pressure readings. If the fuel pressure is within specification listed in Table "Fuel Pressure (DDEC VI with Regulator)" , check for high fuel temperature return; refer to "12.5 High Fuel Temperature Return" ., I own a 2005 Sterling Detroit 60 series. Was running fine until yesterday was only parked and when I went to start it up the motor would turn but no fire up. tried to push start but nothing not even smoke from stacks. Shot of ether engine fires up as soon as I stop the ether engine dies and won't start. Nothing showed up on computer diagnostics., Detroit 60 series regen problem Discussion in 'Trucks [ Eighteen Wheelers ]' started by ribella, May 18, 2015. Page 2 ... Removed sensor from fuel pump and connect mechanical gauge, start engine and pressure is ok, connect sensor back... disconnect pin 120 from MCM and inspect harness side and MCM for oil... engine oil and passing it to engine ..., I have a Freightliner Century with a Detroit 12.7 s60. Recently the truck has become very hard to start and has lost power specially when going up hills. I have checked and cleaned the check valve on the filter and also the check valve behind the cylinder head. But still the same difficulty in starting, I have to use starting fluid all the time.