Strange ISB issue.
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Joined: Apr 2010
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this is starting to sound like a normal problem, well not a problem just normal, i have seen valves out of adjustment cause this and most can be cured up with a valve adjustment, but whits smoke and stumble while cold and a no load rev is normal, if i try to free rev mine when it is cold it wont 1500 and pops and shakes violently, bottom line, these engines dont like being cold, and need to be warmed up to operate correctly, if its only doing it when cold and no load, i wouldnt worrie about it, do a valve adjustment and see what it does,
I know the 6BT engines we have at work don't run good at all when cold if the overhead needs adjustments.
Thanks for the tip. I'll report back after I try that. It just thought it strange to have started this so suddenly. ran fine all winter with just a minute or two of warmup time.
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Joined: Jan 2011
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Got the same issue - 02 Dodge 3500 with Cummins 24 valve ISB VP44 pump - replaced injectors, lift pump, fuel filter to no avail - idles ok when cold - if you try to do anything (like drive) plumes of white smoke and no power - once it is warmed up (just like the other person with this issue) it runs great. Any help you guys could give will be greatly appreciated.
Thanks in advance,
Adam
Thanks in advance,
Adam
Registered User
Joined: Jan 2011
Posts: 2
Likes: 0
I read somewhere while doing research that it could possibly be the spring mechanism that controls the advance on the left side of the pump. I think I may try taking the cover off and inspecting the spring etc since I am at a point of buying a new pump to resolve the issue i have nothing to lose...
Last edited by gold25dog; Jan 19, 2011 at 12:30 PM. Reason: Bad Pic Link
