Smoke from tailpipe on downshift and deceleration

RoyBatty · Post by **RoyBatty** » Tue Apr 10, 2012 3:00 pm

Just noticed this today as I approached a stop light.
Downshifted from 4th to 3rd and let the engine do the braking for about 5 seconds then dropped from 3rd to 2nd. Looked in rear view mirror and noticed smoke from my tailpipe. Went away once I stepped back into the throttle.
Valve guides??

azruss · Post by **azruss** » Tue Apr 10, 2012 3:25 pm

you got it. valve guides and seals.

124JOE · Post by **124JOE** » Tue Apr 10, 2012 3:27 pm

you can let it go for awhile

majicwrench · Post by **majicwrench** » Tue Apr 10, 2012 5:27 pm

Rings more likely than valve guides. On decell you build up a whopping vacuum in the cylinders and guess what gets sucked in. Oil past the rings.
Keith

digitech · Post by **digitech** » Wed Apr 11, 2012 8:58 am

It can also get sucked in past seals/guides.

124JOE · Post by **124JOE** » Wed Apr 11, 2012 9:36 am

you can do a leak down test to find witch cylinder/s are bad

Smoke from tailpipe on downshift and deceleration

Smoke from tailpipe on downshift and deceleration

Re: Smoke from tailpipe on downshift and deceleration

Re: Smoke from tailpipe on downshift and deceleration

Re: Smoke from tailpipe on downshift and deceleration

Re: Smoke from tailpipe on downshift and deceleration

Re: Smoke from tailpipe on downshift and deceleration