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Old 11-19-2012, 09:12 PM   #11 (permalink)
JC1843
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If you have fuel to the scrader valve-- and it never fired-- you do not have a fuel problem. Have someone crank the engine, while you shoot a little WD40 in the intake. DO NOT USE ETHER.

Check for codes-! and all computer plugs-- also the BIG wiring harness connection on the valve cover.
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Old 11-19-2012, 09:43 PM   #12 (permalink)
Maine Towing
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But his primer pump is getting soft in a couple minutes so the pressure is dropping off quickly and being replaced with air. Spraying WD 40 into the intake will put a combustible mixture directly into the combustion chamber, unless the pistons were gone it will fire on that, but that will not help diagnose why its not running, and it may not fire evenly, he had a P0087 which means fuel problems.
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Old 11-19-2012, 10:23 PM   #13 (permalink)
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I ordered the seal kit, I'll try the water sensor and bleeder as well
Thanks.
Couple of shops thought it might be the pressure relief valve is stuck open,
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Old 11-19-2012, 11:10 PM   #14 (permalink)
Maine Towing
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Its not a hard job to get the relief valve out. Remove the glow plug controller and bracket it is bolted to, you will then see the FPRV at the end of the rail, I think it comes out with an 18mm socket if I remember correctly. If you do take it out may as well shim it at the same time as eventually you will need to anyway.
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2006 Chevy Silverado LT 4, LBZ, 4WD, Crew Cab, DRW, 6 speed, spends her life with a 7 horse trailer hitched in the bed.
100 gal Trans-Flo aux tank
B+W Turnover mount, EGR blocked
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Lift Pump at 175,000 miles, CP3 at 299,000
ALL ON MOD - credit to GMC2500HD - best $1.29 mod you can get !!!
Air box mod
Wicked hot wife
4" Flo Pro exhaust, down pipe back, cat was stolen by some scrap iron punks That's my story and I'm sticking to it!!!

Official member of the over 300,000 mile club.

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Old 11-20-2012, 08:23 AM   #15 (permalink)
JC1843
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You can test the FPRV without removing it. It is called the "bottle test".

Here is some info on the "Bottle Test".

On the drivers side fuel rail-- to the back and next to the Turbo, you will see a "U"
shaped 3/8 hose-- remove the hose from the fuel rail-- and plug the hose.

Now attach a 3/8 hose to the fuel rail nipple, and stick the end in a bottle. Crank the engine-- if there is any fuel in the bottl, the FPRV [fuel pressure relief valve] is leaking main pressure from the fuel system.

The FPRV is a plug looking part that screws in the back of the driver's fuel rail. Many just increase the pressure with a couple washers, to help hole the pressure. Others use a "Race" plug [not recommended] available from supporting vendors.
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Old 11-20-2012, 12:23 PM   #16 (permalink)
dddboat
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replaced the wif sensor this morning and still nothing.
Ill check the fprv with the bottle test hopefully find something their
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Old 01-02-2013, 09:27 AM   #17 (permalink)
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just to let everyone know what the outcome was.
It ended up being a injector pump failure,I got tired and took it to the dealer.Thanks for all the replies and help. Just got it back friday and have been driving it without any issues so far.
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