Mechanics

WHY WONT MY TRUCK START

1995 Chevrolet Suburban

Previous owner said it was running fine then it just shit down like someone had turned the key off its a 6.5 turbo diesel k2500 suburban it has good fuel no air in the lines a remote mounted fuel driver module (pmd) has fuel to the injectors but will not start im not familiar with this engine so any help will be greatly appreciated
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Truckfarmer
May 10, 2012.



Check engine light. Should come on when you turn key to on and go out when started. Here's another thing to look at.
1994 Chevy Truck K 2500 Suburban 4WD V8-393 6.5L DSL

Fuel Cut Solenoid: Testing and Inspection
An inoperative shutdown solenoid can cause a no-start condition. Disconnect solenoid harness connector and with ignition switch in the "ON"
position momentarily touch solenoid harness connector to solenoid connector. If a "click" sound is heard, the solenoid circuit is operating
properly. If "click" is not heard, the system should be diagnosed as follows: 1. With test lamp connected to ground and the ignition switch in the "ON" position, backprobe the shutdown harness connector. If the test lamp
does not light check for open circuit form the ignition switch to the solenoid.
2. If the test lamp lights, check the ground circuit between solenoid stud and injection pump cover to see if connectors are clean and tight. If the
connections are not clean and tight repair and retest.
3. If the ground circuit is "OK", remove the injection pump cover. Connect a jumper wire between solenoid ground connector and ground. With
the ignition switch in the "ON" position, momentarily touch shutdown solenoid harness connector to shutdown solenoid terminal. If solenoid
operates, check for internal injection pump problem.
4. If the solenoid will not operate, replace the shutdown solenoid.

Tiny
Fixitmr
May 11, 2012.
I think that this is the original injection pump and of it is its got 152000 mile on it

Tiny
Truckfarmer
May 11, 2012.
The test tree is something you should follow. Fixit gave you a great chart to follow. I have done it so many times and found it to be the pump in the end that I neglected to give it to you. Sorry, I would follow his chart first before condemning the pump.

Roy

ASEMaster6371
May 11, 2012.
The lite does work haven't checked the codes I dnt have s scanner

Tiny
Truckfarmer
May 11, 2012.
Did you check the check valve as I suggested?

Roy

ASEMaster6371
May 11, 2012.
Thanks guys and I haven't had time yet got off late yesterday and am working today gunna try and check out all points y'all have suggested tonite when I get off work around 6 then ill get back with you thanks for all your help thus far y'all know alot more about this truck than I do and your help is very appreciated

Tiny
Truckfarmer
May 11, 2012.
Ok guys I checked the check valve no shavings and the solinoid is working im gunna hook up the other pmd I've got and see if that helps

Tiny
Truckfarmer
May 11, 2012.
Crack a line at the injector and crank it and see if there is any fuel pressure coming out of the line.

Roy

ASEMaster6371
May 11, 2012.
There's fuel but not much pressure just squirts out a lil

Tiny
Truckfarmer
May 11, 2012.
I still think you have a failed injector pump as I first stated.

Roy

ASEMaster6371
May 11, 2012.
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