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When started my 450 engine runs well then slows down and smokes then speeds up the slows down and smokes again and so on.

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6 Suggested Answers

6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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glamarre82
  • 140 Answers

SOURCE: 2002 nissan altima in drive position was driving very slow

THrottle position sensor check that.

Posted on Jul 28, 2009

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  • 100 Answers

SOURCE: Yesterday on highway 100kn an

It sounds like the engine is misfiring. Get the code read at local shop or auto store. It should tell you which cylinder is misfiring then you can begin diagnosing the problem on that cylinder, whether it be a spark plug, coil, fuel injector, or you could have lean codes in which case you will have either a vacuum leak or low fuel pressure. Without the diagnostic trouble code it is hard to tell what is going on.

Posted on Jan 07, 2011

colinronande
  • 4 Answers

SOURCE: Saturn SC2 - 2001 1.9 DOHC 5-speed man. Runs fine,

There could be a few reasons for that happening....It is most likely a FEUL problem. Is it feul injection or carburettor?? If it is a carburretor, then there could be dirt in the jets. You could also have an inline filter that is blocked & not enough feul is getting through to the carb. Another thing that could be causing the car not to start after being running awhile is if the feul line is too close to the engine and is getting too much heat, causing the feul to "bubble" and faporise in the line, untill it cools down. Another cause could be that the float level in the carb is set too low or you have a faulty needle & seat.

Hope this helps.

Posted on Feb 09, 2011

czaa
  • 4521 Answers

SOURCE: 516 Cdi sprinter sudden blue smoking for few minutes and after OK

somthing in the ignition is causing a weak spark--or fuel inject circuit is running to rich----------all causes improper burning---------get a computer diagnostic done

Posted on Apr 07, 2012

skychief2001
  • 21873 Answers

SOURCE: 2003 Chevy silverado 2500!hd reduce engine speed

Have you checked the computer for trouble codes yet ?

Posted on Dec 08, 2012

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