Question about 1998 Chevrolet K1500

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My 1998 chevy truck has a rough idle and kind of chugs when driving it, at about 50 mph at a certain throtlle the truck will shake like the engine isnt getting enough fuel

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There could be several causes for your problem:

  1. Fouled spark plug
  2. Bad spark plug wire
  3. Clogged fuel injector (is equipt)
  4. Bad EGR valve (diagram below)




my 1998 chevy truck has a rough idle and kind of - 6b69fb3.gif

Posted on Jul 29, 2009

  • Greg Margossian
    Greg Margossian Jul 30, 2009

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I would try adding some fuel injector cleaner and replace the fuel filter. My truck used to do this when I first got it, and those seemed to help mine alot. If you havn't tuned up the engine for awhile, look at the spark plugs and make sure they aren't worn along with the distributor and wires, just for good measure.

Posted on Sep 23, 2009

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