odd engine start question

jefflaw35 · Post by **jefflaw35** » Wed Jul 25, 2012 7:57 pm

V8 chevy 327 or 350, shouldn't matter either way. Turn key and while its cranking up to ignite the fuel it starts heavy smoking out of the valve cover oil fill vent. All this in an instant of starting up a sup'ed up motor. Oil level is good, tranny is low, slips a little we aready know. Engine cold. How do you get smoke from the valves while cranking a motor at start up? seems like a serious problem to me.. Any input guys?

Stripermann2 · Post by **Stripermann2** » Wed Jul 25, 2012 9:49 pm

Blow-by....Oil getting past rings, unvented crankcase...could be a host of things. What year? Let us know when you have more info. Is this out if a car?

prowlersfish · Post by **prowlersfish** » Wed Jul 25, 2012 11:03 pm

Stripermann2 wrote:Blow-by....Oil getting past rings, unvented crankcase...could be a host of things. What year? Let us know when you have more info. Is this out if a car?

Agreed

Allen Sr · Post by **Allen Sr** » Thu Jul 26, 2012 5:08 am

Valve seats worn bad/not seating properly?

jefflaw35 · Post by **jefflaw35** » Thu Jul 26, 2012 6:55 am

thanks guys, they all sound like good possible ideas. I was just worried when it started happening becuase its not mine, Claims its an early 80's 350. Im not sure if its possible to tell. Yea its in this 1933 ford model B I have here. moving it around in short spurts alot and this just started happening. Guess its nothing to worry about on my part. thanks for helping....

jefflaw35 · Post by **jefflaw35** » Thu Jul 26, 2012 8:13 pm

after a few chats today I am starting to think Allen Sr is right. Long sits and short runs, Valve is probly stuck. Im going to drive it around the hood soon as I can for an hour or so... Owner says no worries... thanks again

Jerry · Post by **Jerry** » Fri Jul 27, 2012 7:43 am

Do a cylinder leak down test and you will know for sure if that is the problem.