On Mon, 08 Mar 1999 11:38:04 -0500, you wrote:
>I'm getting sporadic white w/ (maybe)bluish-tinged smoke when I get just
>above 55 MPH (~load and slope). I've had some overheating problems due to
>lost coolant from a water jacket leak.. so I'm suspecting a slight head
>gasket leak or bad head/block brought on by overheating.
>
>I also get a milder version of this when I first start my engine until it
>warms up. Haven't noticed any smoke at high RPM's in first or second, only
>in third and above 55 MPH.
>
>Does this point to a valve or ring problem or am I correct in guessing
>something head/block/coolant related? FTHOI (For The Hell Of It), I added
>NAPA Engine Restore, and was surprised to get some actual increase in
>horsepower (or so it seems), but the smoke problem didn't begin to go away.
The fact that the smoke is white (you only say "maybe" bluish-tinged), you have
an overheating problem, and it only shows up at sustained higher RPMs, sure
sounds to me like head crack or maybe head gasket leak. These heads are prone
to cracking (it took me three heads before I found one without a crack). You
don't mention if you have a 216 or 235 (or other) and don't mention the year of
your truck. Not sure if any of this info would matter, but might to someone
else.
Rob
>
>Any help/advice appreciated.. thanks.
>oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
|