Question about 1992 Nissan 240SX Fastback
Get a can of carb spray and spray out the throttle body right before the butterfly plate.
im sure you will find carbon build up right at the plate at an idle position.this causes a lower idle and rough running.use a clean cloth rag.the inside of the throttle body should be very nice and clean.if you want to prevent this from happening.use super unleaded only and this will prevent carbon from forming in the intake.as premium burns a lot better than that low grade junk they try to sell off.there shouldnt be anything else but super but you know thats another story there.
hope this helps
Posted on Jun 18, 2009
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Posted on Jan 02, 2017
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