M1008 Will Turn Over but Not Start

[tmuenster]

I am writing to see anyone might have some ideas on why my truck will not start. Here are the symptoms:

• Turn key half way and Wait Light comes on
• Wait Light goes out as normal
• Hear Solenoid click
• Turn key to starting position and engine turns over (Note: I have new Optima Batteries in 24V original configuration and they easily turn over the motor. I have cranked it over for more than 20 seconds trying to get it to fire)
• Cranking yields no firing of the engine but a small amount of black smoke does come out of the exhaust.
• If I turn the key to the half position and do not try to start the engine, the solenoid will click every 5 seconds.

Any thoughts on what could be going on?

Thanks,
Tom

 

[dependable]

Ok, It is probably either a fuel delivery or glow plug problem. Sounds like your glow plug relay may work, easy to check with volt meter. You could have burnt plugs. You could have fuel air leak, bad lift pump or failed IP. You could see if you have fuel pressure at bleeding port at top of fuel filter base.

Some would suggest your read the TMs, at least you might want to start with reading the CUCV stickys and FEQs on the CUCV forum. Most of this stuff has been covered a lot. Look around, there is a lot of info here. Best to put in a little effort looking for it. Good luck.

 

[trooper632]

Remove pink wire at injector pump, then open black valve on top of you fuel filter and crank the engine over just to make sure you are getting fuel to the injection pump. Start there

 

[doghead]

the solenoid will click every 5 seconds

This indicates that your glow plugs are probably bad.


Troubleshooting is covered in the -20 TM. Start at the "cranks but does not start" section.