Lumpy engine?
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Join Date: Jan 2012
Location: Newport Beach, California
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Join Date: Jan 2012
Location: Newport Beach, California
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I notice the “problem” only when I idling, I.e. when stopped in traffic. When driving, it sounds fine. As stated before, although noticed when idling, the rev counter isn’t showing any increase/decrease in revs. It doesn’t matter if it’s hot or cold on any type of road. The upper timing chain tensioner has been changed to later metal one.
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First Clean the maf get maf cleaner spray it let dry for while then Install I used carburetor cleaner to be honest it did work way better than the maf cleaner
and check the air intake rubber around the throttle body and see if there's air leaks get the spark plugs out and see if there's cracks if they're not iridium get ngk iridium change air and fuel filter . If these things did not imporve the car condition then it will be time to remove the valve cover check if timing jump
and check the air intake rubber around the throttle body and see if there's air leaks get the spark plugs out and see if there's cracks if they're not iridium get ngk iridium change air and fuel filter . If these things did not imporve the car condition then it will be time to remove the valve cover check if timing jump
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