Visit The Dirt Forum for More Information

Author Topic:   uh oh...blue smoke
dode
Dirt Freak

Total posts: 417
posted September 01, 2002 08:49 PM UIN: 13209501
Ok...I haven't had a chance to check this out a lot yet, but I am not even sure where to start. All night on Friday when coming through the corners, it would blow a little bit of blue smoke out (decent puffs, like coming from one cylinder, I am pretty sure it is from #4) starting as soon as he sets the car going into the corner, and continues throughout the corner. Once on the straightaway though, it seems to go away until it hits the next corner. It doesn't smoke at all when I run it in the pits, or drive around the pits, etc. This is in a 60 over 350 running about 5200 rpm max, brand new 76 cc heads were installed last week due to a cracked head. It did do it just a tiny bit the week before too, but not as bad. Would a bad ring do this? It still seems to do alright though because we had our best finish of the season. Any ideas would be good. Thanks.

John

dirtracer14
Dirt Freak

Total posts: 499
posted September 01, 2002 08:52 PM UIN: 23443678
Just a thought here.......when he puts it in maybe the intake is not sealed on that side and when the car rolls it allows oil from the vally to get up there and be sucked in the intake port....again just a thought?

dode
Dirt Freak

Total posts: 417
posted September 01, 2002 08:58 PM UIN: 13209501
That was kinda what I was thinking. I didn't like the intake gaskets that I was given to use. I generally only use felpro, but I was given a set of Mr. Gaskets and told to use them, so that's what I did. They seemed very papery, not like the felpro blues. I think that may be the first place I start. Thanks for the input.

John

nvracer
Dirt Full Roller

Total posts: 26
posted September 02, 2002 12:05 AM
It could be a few things, the easy one is the intake gasket, you could have lost a valve guide or valve seal. Could also be the rings. Just a few things that would cause the problems.

dode
Dirt Freak

Total posts: 417
posted September 04, 2002 10:02 AM UIN: 13209501
I really don't think it is the valve guides or seals. They are a brand new set of heads from Midwest Motorsports, and it did it a little bit the week before too with our old set of heads. I tested the compression last night in all cylinders. They all ranged from 143 to 150, except for one that was up at 155. I am ok with these numbers I think. I am going to pull the intake tonight and see what's up. I almost HAS to be in there somewhere. By the way, #4 cylinder seems to be the main culprit, with maybe a hair of oil in #6.

John

mansfief
Dirt Roller

Total posts: 18
posted September 04, 2002 01:08 PM
My car started smoking like that one night. The valve cover gasket was leaking oil on the manifold in the truns. Maybe that is the problem.

Mansfield

dode
Dirt Freak

Total posts: 417
posted September 04, 2002 01:11 PM UIN: 13209501
I will check those also. Thanks for the idea. That hadn't really crossed my mind.

John

dirtracers
Dirt Full Roller

Total posts: 74
posted September 04, 2002 09:59 PM
We had the same thing happen a few years ago but it didint slow the car down any in fact my dad won 12 features in that one year with that motor everybody teased him because if it wasnt smoking it wasnt out front. We never even looked for the problem it never broke so why bother with it if its running good and not loosing a large amout of oil.

dode
Dirt Freak

Total posts: 417
posted September 04, 2002 11:37 PM UIN: 13209501
Well, I found the problem. It was the intake gaskets. I knew I did not like them to start with, and the passenger side one was hanging down slightly below the head, allowing the intake to pull in oil. Now for some new plugs and wires and we will be all set.

John

mansfief
Dirt Roller

Total posts: 18
posted September 05, 2002 09:16 AM
John, just remembered another problem I had. The back gasket on the intake (fire wall side). If you use the rubber gasket that comes with the gasket set, that will blow out and oil will run down the back of the motor and drip on the exhaust/headers in the turns. Use the blue silicone on the front and back of the intake. that will stop the leak.

Mansfield

Back to the Archives