Mechanics

SMOKE

Mazda 929

I have a 1992 Mazda 929. I noticed that a lot of smoke comes out when the car is just starting to pick up speed but smoke stops coming out when its already running fast. What could be the problem?
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Vinzon213
January 8, 2007.




Sounds like valve seals but try changing the PCV valve and see what happens to the smoke-I've been here before 323/626

Do you see the smoke a lot while decelerating if so remove spark plugs and read it. Wet with oil means the combustion chamber is leaking. You can do a compression and leak down test to id the problem

Do you consume a quart of oil less than 500 miles-
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Tiny
Rasmataz
Jan 9, 2007.
Yah try changing the PCV valve. If you have a 3.0L sohc engine in it, you might have a leaking valve seal (s). Its not uncommon with the older 3.0L to do this.

Cosmo. Mazda TEch

Tiny
Cosmo
Jan 9, 2007.

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