Question about 1994 Chevrolet S-10 Blazer

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Knocking after fixing fuel in oil problem

I have a 94 Blazer 4x4 4.3 vortec CPI and recently changed thefuel pressure regulator because it was dumping gas in the oil and now that issue is solved and a new one problem has risen. I have a severe knocking on the top half of the engine. Could it need new valves etc from the burnt oil and gas problem?

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  • Shawn Hill Mar 04, 2009

    This is for pierre235. Yes I did change the oil and filter afterwards, but it still knocks and i took the valve covers off and the #5 and 6 cylinders are not gettig oil. Thank you,shawndhill19

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You did change the oil after all that gas whent in the oil let me now pierre p.s dont rate thanks for trying

Posted on Mar 01, 2009

  • pierre laplante Mar 06, 2009

    i would check the oil pressure in the engine maybe to mush gas in oil and oil pump was damaged good luck pierre p.s sorry for the delay

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