1989 Silverado smoke out of TBI

amaro100

1989 Silverado smoke out of TBI

Unread post by amaro100 » Sun Mar 21, 2010 5:36 pm

my truck turnes on but after i run it for 10 min or so it turnes off? and theres white smoke or steam coming out of the throttle body? its a 1989 chevy 350 5.7 TBI o and the only way to turn it on after it turnes off is to push the accelerator for a time?

Thrillec

Re: smoke out of TBI

Unread post by Thrillec » Mon Mar 22, 2010 10:53 am

If it is just a puff a smike, then i would say you are loosing fuel presure that is causing it to stall. the puff is a result of it stalling.
If it is more than a puff, and smokes for a while, then i would say it is flooding out, which caused it to stall, and the smoke is raw fuel. A cause for it flooding out could be an injector stuck wide open.

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