Question about Cars & Trucks
Fuel system won't prime
Posted by Anonymous on
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Posted on Jan 02, 2017
Well, one problem is, if its an 8.1, its not a diesel. The 8.1, or Vortec 8100, is a gas engine. The DuraMax is a 6.6 engine. There is usually not a priming system on a gas engine, because the fuel pumps will usually get it through the smaller filters used quick enough you dont need them. However, if it is a DuraMax engine, then right on top of the fitting where you mount your diesel filter, there is a primer pump and an air bleed valve. What you do is, open up that air bleed valve ( its a little black plastic octagon shaped thing on the top of the filter mount) then you pump the primer (the silver button looking thing) until you get diesel squiting out the air vent without too many air bubbles or gurgles.
Posted on Jan 23, 2009
is there a primer valve on the pump? it would unscrew and then pull out if it had one. take a look around the injection pump. but i belive that uses an electric lift pump it should not need to be primed there may be something else going on here.
Posted on Mar 15, 2009
I have a 1995 Dodge Stratus and I had the same problems last winter it turned out to be the main brain the ECU as they call it It costas about 1200 dollars new but i scored mine from a junk yard for 10 bucks and my car hasnt done it since. They very well may be your problem because i have the same engine in my car its just a smaller body style. look on the net for spaldings used car parts u can look up parts and they usually sell ecus for 75 to a 100 dollars.
Posted on Oct 06, 2009
Testimonial: "thx for input !"
you'll need a professional computer to reset how ever there are two relays for fuel on chevrolet
i would suggest finding the second one first
Posted on Dec 14, 2009
Check your fuel pressure to ensure proper pressure to the block, also did you replace the fuel filter.
On a side note: 3 things a automobile needs to run
AIR-make sure you have a clean air filter and your MAF (mass air flow sensor is plugged in) if you pulled your breather to innspect anything, there is a possibility that it came unplugged or you unpluged it and forgot to hook it back up, a car wont start without it being plugged in if equiped
SPARK-Make sure your car has juice to the plugs, if the plug doesnt fire the car wont run, if you have to pull each plug and ground them to the engine block to see if they arch. If not trace the problem down (if you changed the fuel pump you have some mechanical skill and should be able to troubleshoot a spark issue)
FUEL-Check for proper pressure, dirty fuel filter(s) and if your system has a return line, make sure your hoses didnt get crossed cause this will damage the engine and regulator.
Hope this helps Thanks for using Fixya.com
Posted on Jan 22, 2010
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