ozh_hawaiian

I changed my headgasket a few days ago, I had the head shaved and pressure checked, after I put it all together, I noticed that there was blueish smoke coming out of my exhaust, and I can smell the burnt oil. it also seems like I have a slight misifre, it doesnt do it sitting at idle, just when the throttle is opened, and it seems like it got worse in the last 2 or 3 days, to the point where my idle was dropping almost to 0. my car did not burn oil like this before I changed my headgasket, so I am not sure why all of a sudden it would be doing this? could my timing have anything to do with this?

Former User

Compression test the cylinders. The head gasket may be bad.

carlin45

I think that the headgasket is not good.Because it was working earlier as you said.you would need to change it.

ninjaturtleEG

Ya the cause can definitly be off timing. Check that.

chucky420

Pull plugs. If you're burning oil there should be traces of it on the plugs. Did you also machine the block? Do what RonJ@HT said and do a compression test. Might also do a leakdown test as well to rule out any ring problems since you know the valves are sealing. Pressure test the cooling system too. Usually a poor sealing head gasket will cause an internal coolant leak. If you end up pulling the head again, check the block surface with a straight edge and feeler gauges, and look closely at the cylinder walls.

ozh_hawaiian

i pulled the plugs and the first three were a little fouled but clean and the last one had oil on it, so I guess im gonna have to start with a compression test and go from there. is it worth it to try the stop smoke stuff?

ozh_hawaiian

could the fact the I had my head shaved raise compression enough to blow my rings? or could it be my valve seals?

94EG8

i haven't seen a D15B7 yet that didn't smoke after putting in a head gasket. Once they blow the engine is junk.

ozh_hawaiian

so Im kinda confused now, I put in some stop smoke, and the smoking went donw a little bit, but I checked the plugs today, and the one plug that had oil all over it is now clean?!?! it even looks like its a little lean, both outer plugs look clean, and the inner plugs look like the are a little rich... my car runs, but still feels like it has a slight hesitation, like its kinda misfiring at lower rpms, so im confused as to what it could be? could this be a timing issue?

ozh_hawaiian

ok so I did a compression test, and heres what I got:
top number is wet, and bottom is dry. you can see that the spark plug farthest to the right is pretty clean, and the 2 in the middle are pretty fouled.
what should my numbers be around?

ozh_hawaiian

can anyone tell me if this could be bad valve stem seals? or could it be my rings?

lastchanceautos

So curious did you do the compression check yet and the results please

ozh_hawaiian

yeah, results:
1: dry 160 wet 175
2: dry 165 wet 180
3: dry 175 wet 187
4: dry 185 wet 195

Adamvanxxx

Compression looks good to me, I would do a clt to rule out the rings . Did you check timing?

EJeff8

Uh oh. Please don't let my friend see this, haha. He just bought a 93 Del Sol S and learned it had a 96 head swap. He can see a line of rust on the underside of the hood from a blown head at some point. He smokes really really bad right now at the powerband and thinks it's his piston rings.

I hope it's not what you just said.

ozh_hawaiian

im gonna change my valve stem seals tomorrow, and hope that it fixes it. is there another way to keep the valves from dropping into the cylinder besides filling the cylinder with air? I was thinking about putting a zip tie on the valve so it cant drop all the way in

94EG8

I've seen all kinds of them. Perfectly good running engine blows headgasket, put in new headgasket, instant oil burner.

EJeff8

^Oh crap.

ozh_hawaiian

is it possible to change the stem seals without filling the cylinder with air? I read that if the piston is at TDC the valve wont be able to go far enough into the cylinder to lose it. can anyone vouch for this?

owneyboy

iTrader: (1)

if you changed your head gasket because of a over hearing issue like a blown gasket... overheating causes metal to warp.. so your cylinders could be out of round/ oval. so your rings could possibly be sitting a little weird causing blow by and burning oil.