| Re: Oily spark plugs and exaust popping quiestion |
Subject: Re: Oily spark plugs and exaust popping quiestion by BillH on 2009/2/15 15:29:11 Quote:
Yep, valve guides/seals. The best way to check this motor would be to do a leakdown. but, if the plugs are oily (not covered with gas), it's rebuild time. Interesting sidenote on smoke at startup: Quite a few years ago, I bought a brend new Chev Van, it smoked a little on startup even after 1500mi. breakin. Took it to the dealer, of course, they said it was normal. This 350 SBC did it on cold startup for 250,000 miles. It didn't use any oil until it hit 200k. So, I put in a low horse crate motor at 250k and it did it, WTF, none of the other SBCs I built did it. My Silverado, 5.3 Vortec with 120k miles, uses no oil at all and dosen't smoke at all. Except when I park it, overnite, facing downhill, then it blows a nice puff on cold startup. Go Figure. |
