need help - white smoke
#1
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need help - white smoke
Ok, I know white smoke with a sweet smell = blown headgasket. But it was a brand new head gasket on a completely rebuilt motor. Here's the details:
CRX
d16a6
na
.020 overbore
12:1 compression
ARP head studs
It was a complete rebuild from a bare block up.
Everything seems fine with the exception of this white smoke, so I took the head off and sure enough there's coolant in very small amounts in the cylinders (on top of the pistons) but no sign of wear and tear to the head gasket. I remove the head gasket, exhaust mani gasket, and intake mani gasket and replaced all three. Reassembled. Torqued to ARP and Honda specs.
Started it back up and white smoke again.
Also: 10 fast blinks on the EDU. CEL code is ten fast blinks. CEL code 10 - Intake air temperature sensor or circuit? Any idea if this has anything to do with it? Or another problem I need to diagnose?
Any ideas? I'm at a loss since I've put two new head gaskets on it.
CRX
d16a6
na
.020 overbore
12:1 compression
ARP head studs
It was a complete rebuild from a bare block up.
Everything seems fine with the exception of this white smoke, so I took the head off and sure enough there's coolant in very small amounts in the cylinders (on top of the pistons) but no sign of wear and tear to the head gasket. I remove the head gasket, exhaust mani gasket, and intake mani gasket and replaced all three. Reassembled. Torqued to ARP and Honda specs.
Started it back up and white smoke again.
Also: 10 fast blinks on the EDU. CEL code is ten fast blinks. CEL code 10 - Intake air temperature sensor or circuit? Any idea if this has anything to do with it? Or another problem I need to diagnose?
Any ideas? I'm at a loss since I've put two new head gaskets on it.
#3
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Re: need help - white smoke (motoman)
Block was machined and head was measured with a straigtedge and feeler gauge thingy. Almost perfect (well within stock specs).
I'm going to take it apart and take the head back to the machine shop to check it professionally.
In the meantime, anyone else have any ideas? Valve seals? Mating surface smoothness? Is it possible that there could be any problems with the intake manifold? I'm just at a loss since everything appears to be fine when its pulled apart.
Thanks.
I'm going to take it apart and take the head back to the machine shop to check it professionally.
In the meantime, anyone else have any ideas? Valve seals? Mating surface smoothness? Is it possible that there could be any problems with the intake manifold? I'm just at a loss since everything appears to be fine when its pulled apart.
Thanks.
#4
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Re: need help - white smoke (zeneraldog)
crank in the head or intake manifold gasket is leaking into the #4 cylinder from the coolant passage next to it
#7
Re: need help - white smoke (zeneraldog)
I had the same problem too new headgasket and all and a shop as well i had to do my head like four times to get it right. best advise it to torque the head tight as hell.
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#9
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Location: redneckville, redneckstate, redneck
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Re: need help - white smoke (zeneraldog)
have u tried torquing your head gasket just a little bit more than stock? maybe u just didnt torque it enough, that happened to me once
#13
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Re: need help - white smoke (zeneraldog)
maybe your fast idle thermal valve is loosened up and maybe allowing coolant in through the tb. check this out for info in the FITV. https://honda-tech.com/zerothread?id=1003988
#14
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Re: need help - white smoke (1_bad_EF)
That could be it!!! In the link you provided, it mentioned the high revs on startup. It does indeed surge on startup, so it absolutely could be the FITV. I'll make that the first thing I check. I have another full Intake Manifold and TB sitting in the garage. I'll just swap it before I do anything else.
Thanks everyone, this gives me A LOT to look into. I'm sure its one of these things. Hopefully one of the easier, rather than the more difficult/costly.
I'll let you know what I find.
Thanks everyone, this gives me A LOT to look into. I'm sure its one of these things. Hopefully one of the easier, rather than the more difficult/costly.
I'll let you know what I find.
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