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when my 2001 nissan exterra service engine soon light comes on it starts running rough .when this happens it runs rough and smells like burnt oil .it reads a code of #1 cylinder misfire . i have replaced wires , plugs , cap , and fuel filter .it is a now and then kind of thing that has been going on . does anybody else have this problem

Vehicle: 2001 nissan exterra 6 cyl

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Hi there,

A common issue with these is a lower intake manifold gasket leak. With the engine running, spray some carb cleaner along the intake and see if the idle speed increases or smooths out. If it does, then this means there is a leak.

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