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Engine idles rough.

Old 03-11-2012, 06:36 PM
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Default Engine idles rough.

I have a 95 Blazer 4X4 with the 4.3L V-6. The motor has excellent throttle response off idle, runs well, and produces alot of power, I also get 15 MPG. My spark plugs are new and of normal color. Cap, rotor, and wires are also new. I replaced the fuel injector assembly and fuel pump 2 years ago. At the tail pipe I get an uneven lope with an occasional puff sound. Is this a vacuum leak problem or exhaust leak?

Last edited by Nicholas Smeed Jr.; 03-11-2012 at 06:41 PM.
Old 03-21-2012, 08:26 PM
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best thing to do is record it , throw it on youtube and post the vid here... better to help ya
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