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Old 14-06-2014, 12:13   #16
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Re: diesel in oil

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Originally Posted by Terra Nova View Post
The "slightly" over-full oil sounds more like dip-stick/operator malfunction. If you can't see, feel or smell diesel in the oil, you might be imagining it.
Definitely fuel in the oil, smells of diesel and oil is thin
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Old 14-06-2014, 12:18   #17
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Re: diesel in oil

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As engine runs well with no smoke (so its not an injector), and the lift pump isn't the problem (Yanmar lift pumps are more prone to failure than Perkins)--all signs point to a seal in the injector pump. Time to get the IP rebuilt.
also if it got worse with the electric pump, it leads me to think the same, to shop I go
Any secrets I should know about to remove the pump? Shop manual shows it to be fairly simple process, just be careful with the shims!!!!!!!!!!!
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Old 14-06-2014, 22:21   #18
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Re: diesel in oil

I've had several perkins injector pumps leaking diesel internally at my shop recently. Change your oil and keep that engine for emergency. One of the leaking injection pumps turned into a runaway and that will definitely ruin your day.
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Old 25-06-2014, 06:20   #19
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Re: diesel in oil

Finally got the pump off the engine. The number two plunger fell out of it's barrel indicating that it was worn beyond tolerances. There is no seal per se, it is the fit of the plunger that serves as seal, fuel was in deed leaking around it and passing into the oil. Unfortunately the pin that locks/indexes the plunger has worn down. Prognosis is that the pin has wallowed out the hole in housing, it will require a NEW pump!!!!!!!! Gonna try another shop to see if they agree before dropping 750.00 for a new one compared to 400.00 for rebuild.
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Old 25-06-2014, 06:57   #20
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Re: diesel in oil

At least you were observant and caught it! Good work skipper. Just think it could've been $5000 for a rebuild or more for a new engine if it destroyed the block. Look at it that way and you just saved yourself $4250 at the very least!
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Old 28-06-2014, 10:21   #21
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Re: diesel in oil

Wow. Great diagnostic work. You got off cheap

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