Question about 1993 Nissan Sentra 4 Door

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My nissan sentra super saloon 1.6 1993 model

I have a problem about my car. well, my rpm and i think it has something to do with the suervo. when i start the engine the rpm is increasig and decreasng. up and down evrytime.

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Hi,it sounds like a vacum leak,that makes the engine rpm go up and down.( check all the vacum hoses around the engine )you can check the leaks by sprayng carburator cleaner close to the vacum lines,if there are any leaks the rpms will increase imediatly. good luck....

Posted on Aug 19, 2008

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