Question about 1986 Oldsmobile Cutlass Supreme

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1986 cutlass stalling and high idels while in park

My cutlass has a rocket olds 307 cub. and it stalls after reaching operating temp. i put straght dual exaust and it still doing the same thing. it also high idels while in park i have done every thing posible can you tell me what im missing

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  • abel_fuentes Feb 03, 2009

    i have been useing carb spray would wd-40 work better

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2 Answers

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You are going to need a new carb (bigger) not too big - here is a simple thing to remember, you made it more efficient on the exaust side and now it is starving on the intake side, ( the more fuel and air you give it - the more efficient it has to be to get rid of it) yours is just the opposite, to could temporarily advance your timing maybe 5 degrees until you get a bigger carb but be careful, you could burn holes in your pistons and valves

Posted on Feb 05, 2009

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Check for vacuum leaks at the intake and carb. base. Check your vacuum hoses and your brake booster hose. While running, spray WD-40 along the intake and see if the idle changes. Do the same with the carb. and visually check all your hoses for cracks or breaks.

Posted on Feb 03, 2009

  • Lee Quiroz
    Lee Quiroz Feb 03, 2009

    Either one will work.

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