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Old 07-14-2022, 03:41 PM   #1
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Sudden power loss, white smoke and CEL on.

RV was running fine and strong, arrived at camp site and had to climb small, uneven incline. When we tried to maneuver into our spot we lost engine power, had white smoke and check engine light came on.

After some playing around by a couple of mechanics on site, we were able to leave the camp site but still had intermittent power loss accompanied by check engine light. It generally ran fine for the 10 mile ride home but here and there the light came on and we had obvious momentary power loss.

Now we are parked in driveway and we still have white smoke and check engine light at idle. Starts fine, idles fine, revs fine in park.

RV has 55000 miles. Recently changed lift pump, fuel lines, fuel filter, overflow return valve. 5.9 Cummins 24v ISB pusher/Allison Tranny. 1999 Winnebago Adventurer. Boost gauge was showing boost on the way home. Mechanics opened turbo housing and determined turbo was ok and disconnected air filter and we still had the problem. Full tank of fuel with recent Diesel Mechanic in a Bottle treatment added at fill up. Also, smoke is real strong and burns eyes, acrid smelling.
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Old 07-14-2022, 09:57 PM   #2
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What code is the check engine light?
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Old 07-15-2022, 08:48 AM   #3
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White smoke usually means anti freeze getting into the combustion chamber. Have you checked your radiator level?
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Old 07-15-2022, 05:49 PM   #4
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Original code info was generally injector or fuel related. I think pin 11 was mentioned. I checked with tech today and he doesn't have the info saved so he is going to check it again as soon as he can get back here. Next time I will capture that info for future reference.

He seemed to think it was some type of electrical issue since this problem seems to be intermittent and came on suddenly. Today I noticed smoke was intermittent at idle and CEL didn't come on right away. It came on after 7-10 minutes of idling.
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Old 07-15-2022, 05:54 PM   #5
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Also, oil has no foam or water in it. No smell of antifreeze with exhaust. Just acrid smoke.
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Old 07-19-2022, 09:03 PM   #6
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White smoke with power loss

I had the same problem with my Cummins and it turned out to be the injection pump. The lift pump had been replaced previously but I installed a Fass system but still white very acrid smoke and power loss. So the injection pump was next, hard job but doable. I did all the work myself so I saved a bundle.
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power, power loss

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