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Old 08-03-2017, 08:05 AM
Bigdog Bigdog is offline
Join Date: Jul 2001
Location: Greensboro, NC USA
Posts: 64

I think I finally got my answer. About a week ago, after I stopped at a little market, it wouldn't start again. Turns over ok, but never catches. I'm getting fuel to the injector pump and the glow plugs are fine. I had it towed home. Last weekend, I removed the oil filler tube so that I could see the injector pump end that runs off the camshaft gear. I could see it turning. I hope that, that rules out a timing chain issue.
Soooo, does this basically say that the injector pump has failed and it's time to remove for a rebuild? Is there anything else that I can test to be sure that it's the injector pump?
Thanks for any suggestions and/or replies.
\'83 Chev 4x4 Suburban; 3/4 ton; <BR>6.5L non turbo; replaced the original 6.2L with new GM motor<BR>4:10 gear<BR>new 700R4 trans <BR>B&M Deep Trans Pan<BR>Autometer Trans Temp Gauge<BR>Rear Heater & A/C
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Old 08-03-2017, 04:02 PM
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sctrailrider sctrailrider is offline
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Join Date: Feb 2012
Location: Pauline, SC
Posts: 460

I didn't read every word in this thread again so I'll ask....

When it won't start have you tried pouring cold water on the pump??

If it starts when cold water is poured on it then it's time for another pump...
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Old 08-04-2017, 06:02 AM
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Robyn Robyn is offline
Missy Good Wench ( Moderator)
Join Date: Apr 2001
Location: Newberg Oregon
Posts: 9,709

Another test is to dump a gallon of 30W motor oil in the tank (Mix with some diesel first)

This will add lubricity and THICKEN the mix some.

If the hot start issue is better then the IP is worn out and needs a rebuild.

A good rebuild requires a head and rotor replacement.

What happens is the plungers and their bores wear out to the point that once they heat up they leak enough that they can't build pressure.

As mentioned COLD WATER ON THE IP can cool things enough that it will start.

If you can spin the engine fast enough (Stick shift being towed/pushed) it would likely start.

Give the oil a shot.

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