truck cranks but doesnt start - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 18 (permalink) Old 10-21-2010, 03:17 AM Thread Starter
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truck cranks but doesnt start

A friend of mine used my truck to go get a motor for me for a different project,he filled up my truck (04 lb7 ats trans, copilot,ppe boost valve,4 inch magnaflow,afe intake and efi live) and headed off.After picking up the motor he got about 5 miles away and the truck died at a stop lite and hasnt started since i checked all grounds batt terminals changed the fuel filter the air dog lift pump is working great and the pump on the fuel filter housing is hard as a wedding **** = no air no code in the computer,looking for some help from some diesel brothers.
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post #2 of 18 (permalink) Old 10-21-2010, 03:23 AM
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If you crack the bleed screw on the top of the filter housing is fuel coming out?

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post #3 of 18 (permalink) Old 10-21-2010, 03:33 AM Thread Starter
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oh yes plenty of presure there
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post #4 of 18 (permalink) Old 10-21-2010, 03:38 AM
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When you turn the key to crank the motor, does the motor fire off occasionally like its trying to start or just crank and crank?

-Robert.

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post #5 of 18 (permalink) Old 10-21-2010, 03:43 AM
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And how many miles are on the truck?

-Robert.

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1997 GMC Suburban SLT 5.7L 4A

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post #6 of 18 (permalink) Old 10-21-2010, 03:45 AM Thread Starter
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no it does not,i had a problem with it when i installed the engine,it would crank then but wouldnt start,i found 2 injectors stuck open and it wouldnt generate enough presure to make the bosh injection computer to work,changed the injectors and it fired rite up,but this engine was running when it died this time.
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post #7 of 18 (permalink) Old 10-21-2010, 03:49 AM
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Originally Posted by blk smoke lb7 View Post
no it does not,i had a problem with it when i installed the engine,it would crank then but wouldnt start,i found 2 injectors stuck open and it wouldnt generate enough presure to make the bosh injection computer to work,changed the injectors and it fired rite up,but this engine was running when it died this time.
So when you turn the key it just cranks?

-Robert.

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post #8 of 18 (permalink) Old 10-21-2010, 03:51 AM Thread Starter
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yes,cranks over great plenty of rpm
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post #9 of 18 (permalink) Old 10-21-2010, 03:53 AM Thread Starter
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Is it possible that it lost psi from 2 injectors sticking open and the bosh injection computer shut down????
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post #10 of 18 (permalink) Old 10-21-2010, 03:54 AM
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Anything is possible, but the injectors sticking usually trips a check engine light. How many miles are on this truck?

-Robert.

My Fleet;

2011 Volkswagen Jetta TDI 2.0L 6A
2010 Chevrolet Malibu LT 2.4L 6A
2003 Chevrolet Silverado LS 6.6L 5A
1997 GMC Suburban SLT 5.7L 4A

TDG MAFIA
Quote:
If you dont stand behind our troops, feel free to stand in front of them.
Thinking of buying a Duramax? You need to click this link;

Reading material

I am an old Fart;

Toot-Toot


Last edited by merlin5577; 10-21-2010 at 03:58 AM.
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