Chevy Silverado
Chevy Trucks and SUVs
Air Filters and Intake Manifolds
Chevy 350

1997 silverado vortex 350 engine intake manifold gasket blew water and oil mix ended up being sucked into intake replaced oil plugs oxygen sensors but engine missing at most speeds ran perfect before?

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Wiki User
12/07/2007

replace intake manifold gaskets, if gaskets have been replaced and intake has been clean oil and plugs have been changed then your problem most likely would be the timing.timing the distibutor on a vortex engine sometimes can be tricky.