Friend of mine put this head on his crx and it smokes real bad. The compression is 215 across all four with the throttle body wide open. I think the headgasket is bad or the valve seals are shot. Can anyone confirm this? I am going to do a leak down test on it when he brings it back over. He bought the head from a junkyard and doesn't know the history of it.

http://www.youtube.com/watch?v=jOfG0qrEw1o





Modified by 1 Fly SI at 1:17 PM 5/29/2007

 

was the block in the car and the new head just put on? If so some coolant probably got in the exhaust during the swap. It takes quite awhile to burn off. when I changed my headgasket it took a 30 minute drive to get it all out.

 

white or black smoke.... was the head resurface or at least cleaned very good. also like the guy said...takes about 30 mins 2 actually clear up if you had a blown head gasket before. lots of coolant in the exhaust system.

 

Its white smoke and smells sweet. Did you see the video? I drove the car around about 15 miles and he drove it a couple himself. There is no oil in the water or water in the oil. Coolant level doesn't drop. The reason the head was changed is because the timing belt popped. The head wasn't cleaned it came from a junkyard.
Could it be a burnt valve? There was a bunch of buildup on the valves.I don't want to pull the head if I don't have to.

 

Well it is probably going to be the headgasket. As they said if some coolant was not cleaned out of the pistons when you pulled the head, the smell and smoke will be there for a bit. The sweet smell is the coolant being burnt. I would say that if you are not losing coolant and there isnt any coolant in the oil then it's probably coolant in the exhaust. I had the same issue with a CRX with the piston rings were so bad it took 2 days of running around to get all the oil that was in the exhaust out. Also is there any coolant in the overflow tank? If there is when the car is running does it bubble? I have heard that if the car has a blown head gasket that the overflow tank hose will push air into the overflow tank, not suck it out like it's supposed to. Again it's hear say, never tried it before. GL man. hope this helps you out.

 

Well I did stuff rags down in the cylinders to get all the coolant and oil off the pistons. I have seen a bad head gasket make bubbles in the radiator. With the car running,I took the radiator cap off ,if you rev it the coolant will rise, but no bubbles. Also the radiator is holding pressure like it should.

 

up for some info

 

 

Like they said, its just coolant in your exhaust system. You arent losing any coolant. Just keep driving it around on the highways and it'll burn out or get blown out.

Janos

 

After driving it around today the sweet coolant smell went away now it is bluish smoke. I am in the process of doing valve seals now.

 

Valve seals done,didn't fix a thing. It is definatly oil burning. The motor was fine untill he switched heads. What else could it be? Cracked head,or warped?

 

I would check the valves to make sure none of them are damaged or chipped off...Also, if it's bluish smoke it COULD BE you piston rings too...My D15b2 did the SAME EXACT thing. And it turns out it was both the valves and rings...

 

I know it is the head because three weeks ago the car ran with no smoke. He put this old head on it and it started smoking. I am going to pull the haed and just replace it.

 

Pretty sure its a cracked ringland... do a leak down it will be the teller...

If you changed the valve seals then I dont know what else it would be in the head to make it burn oil

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slow96coupe &raquo;</TD></TR><TR><TD CLASS="quote">Pretty sure its a cracked ringland... do a leak down it will be the teller...

If you changed the valve seals then I dont know what else it would be in the head to make it burn oil</TD></TR></TABLE>

Exactly...If the valve seals were swapped out and the new ones not damaged on installation, then more that likely it is not the head... Time for a leak-down test!

 

well if coolant got in the headers, then its probable that oil did as well. How dense is the smoke? Are you losing oil? Is the compression test coming out the same?

New seals may not be able to comspenate for excessively worn valve guides or valve stems. How is it smoking?

Janos

 

http://www.youtube.com/watch?v=jOfG0qrEw1o

 

ur telling me its still smoking like that?

Janos

 

Yes

It didn't smoke like that untill we put this head on.

 

did u put a new hg on after doing the seals??? it looks like a bad hg it sucks but could be true or the head could be warped