Re: Smoke at start up 93 S10 4.3
If it's a TBI or even the CPI back in 89/90 to 93 I believe GM installed the wrong valve seals. They were
the o-ring type. GM put aTSB out and I think a quiet recall out telling the dealers to change over
to the GM "umbrella" style valve seals. Mine started when I had about 65000 on it and it still does
it. once in a while. I never changed them out. I use Valvolines high mileage oil now and it doesn't
hardly do it at all anymore and I have 108, + on the speedo now..A GM screw up back in the late
80's to early 90's deal..
Last edited by bg's; 02-17-2005 at 05:52 PM.