1992 Nissan Pickup Support Question
1992 Nissan Pickup Support Question
Find answers below for this question about 1992 Nissan Pickup.Question posted by rickmol on January 26th, 2015
Too Much Black Smoke When Engine Running
just replaced 6 spark plugs a week ago and engine runs good for 3 days after that engine runs rough and too much black smoke coming out.
Current Answers
Answer #1: Posted by waelsaidani1 on January 26th, 2015 5:08 AM
waelsaidani1
Member since:
May 12th, 2013 Points: 19,501,797
Member since:
May 12th, 2013 Points: 19,501,797
Black Smoke
A rich-running engine (too much fuel) can cause black smoke. You may also experience rough running, stalling, and poor fuel economy. Black smoke can also be a result of soot accumulation on the tail pipe—possible causes include a leaking fuel injector or fuel pressure regulator.
Blue smokeExcess oil in the combustion chamber—generally caused by worn rings or valve guides—can cause blue smoke. Over time, the spark plugs can develop deposits due to excess oil consumption, resulting in a rough running engine.
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