Cummins won't start, after fuel pressure gauge install - Great Lakes 4x4. The largest offroad forum in the Midwest

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Old May 23rd, 2012, 01:30 PM   #1
Mijeeper CJ 7
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Default Cummins won't start, after fuel pressure gauge install

I've been trying to get the system re-primed for over an hr. got the truck to fire and ran rough for about 10 sec and now it won't go again. I've crack the fuel lines open at the head. The front one, 3rd, & 4th one back. I've got fuel at the 4th one back but don't seem to have any @ 1&3. I've already killed one set of batteries, looking for any suggestions. The truck has over half tank of fuel.
was running fine prior to install. The truck always started right up, hardly even cranked over.

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Old May 23rd, 2012, 01:37 PM   #2
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First of all there is no 'g' in Cummins,..

But what year is it? is it a 24V? 12V? VE Pump? P Pump? PV44 pump?

Sounds like it maybe a VP44 pump that just went bad, same symptoms that I just had on a 99, had to replace the pump. They can be a bitch to reprime.
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Old May 23rd, 2012, 01:41 PM   #3
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sorry it's a 99' and when I changed the fuel filter it was a major pain in the ass to re-prime. 24v
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Old May 23rd, 2012, 02:44 PM   #4
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The VP44 pump does not like to run with no pressure to the pump, make sure that you had all of the air out of the system before the pump, Should not have mattered much but it may have hurt the pump if there was air and not fuel getting to it while it was trying to run.

The fuel that you are getting out of #4 injector, it it squirting out, or just dribbling out?
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Old May 23rd, 2012, 11:37 PM   #5
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Got it going again. Ended up loosening all fuel line at the head purged it and it started up. Couldn't get the gage to read any pressure think I have a bad ground wire. ran out of time had to go to work hopefully get it working tomorrow.
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Old May 24th, 2012, 08:35 AM   #6
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you shouldn't have to do anything when you change fuel filter...pull the canister, change the filter, tighten it back up and start it. You likely have a larger more pressing issue
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