5.9l cummins white smoke

[rustygold]

Was driving down the road running fine then power went away then a cloud of white smoke. It's smelled like diesel.

It's a new rebuild on the motor.


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[79jasper]

Gonna need way more info than that.

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[rustygold]

Oops 5.9l cummins 12v new everything but 2 month old injectors original injector pump.

It's only had about 3 hours on the motor I rebuild it ran it drove it around felt great. next day started it up drove up a hill doing a small load test big cloud of white smoke comes out get it back to the shop every time I give it gas it puffs out white smoke.

Tomorrow will be collecting more data

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[79jasper]

See if the coolant is disappearing.

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[rustygold]

If coolant is disappearing it's a blown head gasket

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[79jasper]

Correct. You never know.
But right now I would be leaning towards a fuel problem. Double check the injectors. Check fuel pressure.

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[rustygold]

I'm going to do a leak down test and have the injector tested make sure they are fine.

Should cummins have about 2psi before the injector pump like 7.3idi or higher?

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[79jasper]

18-24 at idle, is the number I just saw.

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[rustygold]

Ok well its doesn't want to start anymore just when back and check timing it's off from the pins. Going the pin on the motor lined up the injector pump pis is way off

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[79jasper]

That could do it also.

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[rustygold]

I don't know why cummins made a press fit gear

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[79jasper]

Just like the dowel pin issues though.

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[rustygold]

When I found out about that killer pin as I rebuilt it I did that mod to it

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[79jasper]

Good.
I was just saying sometimes the engineers aren't all that smart.

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[rustygold]

Well try to start it this morning it was not cold but it didn't want to fire up or even hit a beat.

So check the timing on it it looks like the pump is a whole 3/8 of an inch off advanced so maybe that's the problem.

Could not change the timing had to get a coil for my other 5.9l cummins it didn't like running on 4 cylinders

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