Rough acceleration, Died, Started, Blue Smoke, Died again...
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From: Maple Grove, MN
I couldn't actually see which specific cylinders had more or less coolant in them, but I drained the front bank first (1-3-5) and then the rear bank (2-4-6), and tried cranking in-between, and it felt like it was "halfway better". Once all the cylinders were cleared, it started up again after a little persuasion with the throttle.
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Not sure whats going on here... But you still have a leak... Did the water appear to be coolant
or was it water?
This sounds stupid, but check the vacume lines to the Tranny Modulator and the EVAP canister... I have seen a couple of cars that had the EVAP full of water, and when the PCM cycled the solenoid the engine would ingest the water...
I'm, going too ask this again as you are still ingesting water...
You replaced the Lower intake manifold to head plastic gaskets correct? I'm not talking about
the gasket under the upper intake to the lower intake... Not being an A$$ here just making sure of what was done...
I am almost at a loss right now as to what else the problem could be... If it was a cracked head or blown head gasket the problem will almost always be contained in one or two cylinders but not all 6...
I'm running out of thoughts...
Guys any more thoughts?
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or was it water?
This sounds stupid, but check the vacume lines to the Tranny Modulator and the EVAP canister... I have seen a couple of cars that had the EVAP full of water, and when the PCM cycled the solenoid the engine would ingest the water...
I'm, going too ask this again as you are still ingesting water...
You replaced the Lower intake manifold to head plastic gaskets correct? I'm not talking about
the gasket under the upper intake to the lower intake... Not being an A$$ here just making sure of what was done...
I am almost at a loss right now as to what else the problem could be... If it was a cracked head or blown head gasket the problem will almost always be contained in one or two cylinders but not all 6...
I'm running out of thoughts...
Guys any more thoughts?
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From: Maple Grove, MN
Yep, I replaced the UIM, UIM gasket, and the LIM gasket (underneath the LIM). We scrubbed all the surfaces and everything was clean/no cracks. I also looked at my old UIM, and it even looks good. I couldn't find any cracks or anything. What do they normally look like when they're the problem?
-Daniel
-Daniel
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They usually have a crack or split, even a complete hole around the EGR port on the inside of the intake...
It sounds as if the engine is sucking in water... The only place I can think of that could remotely cause the problem is the EVAP canister...
When the car strats to blow the water fortified smoke out of the tail pipe, are you using any coolant, is the coolant bottle getting drained?
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It sounds as if the engine is sucking in water... The only place I can think of that could remotely cause the problem is the EVAP canister...
When the car strats to blow the water fortified smoke out of the tail pipe, are you using any coolant, is the coolant bottle getting drained?
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Yep, I'm pretty sure it'* using up the coolant. We've had to keep adding to it.
Another question, could the problem really be the head gasket, even though the compression seems fine? Does that ever happen?
Another question, could the problem really be the head gasket, even though the compression seems fine? Does that ever happen?
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Originally Posted by DannyM
Yep, I'm pretty sure it'* using up the coolant. We've had to keep adding to it.
Another question, could the problem really be the head gasket, even though the compression seems fine? Does that ever happen?
Another question, could the problem really be the head gasket, even though the compression seems fine? Does that ever happen?
If you go that route you'll be looking into a head gasket kit and possibly shaving the heads if you find that they are warped... If they are cracked then they are trash...
I'm honestly not sure what more to tell you at this point... I am almost perplexed at this point... Its not impossible that you could have a problem someplace... Just not sure where... I can honestly say that I'm stumpified
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From: St. Charles, MO
If you take the heads off again maybe you could put up a pic so we can have a look-see. That might give someone a clue.
I'm very interested in this as I am putting my engine together and I want to know what to avoid.
One less bonneville on the road woul be a crime.
I'm very interested in this as I am putting my engine together and I want to know what to avoid.
One less bonneville on the road woul be a crime.
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