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Hyundai Lantra 2.0 1999 - Misfire under light load - Fixed #

Posted by Rich Lintern on August 4, 2009, 4:52 pm

Year of Manufacture *: 1999
Engine Code or Type *: 2000 cc
( Optional ) Scanner used: kts /solus & omitec

vehicle stutters or misfires under light throttle position but pulls well with throttle in half or fully open position.
i cannot seem to connect with my diagnostic equipment but have scoped,cam, crank, injectors,coils, leads, map, and throttle pot. All seem good except throttle pot which seems to have a lot of interference!? not sure where to go from hear as have no live data. any help or ideas would be greatfully recieved.

Re: Hyundai Lantra stutter / misfire

Posted by Kevin Apps <iframe src='https://members5.boardhost.com/ukautotalk4/info/user=UKAT2589' width='330' height='300' border=0 style='border:none;'> on August 4, 2009, 6:59 pm, in reply to " Hyundai Lantra stutter / misfire"
Kevin Apps

Rich
What duration on the injectors? Have you put a vac gauge on the inlet ? I suspect the valve,s may be sticking.
Kev.

Re: Hyundai Lantra stutter / misfire

Posted by Pete Mutlow <iframe src='https://members5.boardhost.com/ukautotalk4/info/user=UKAT1569' width='330' height='300' border=0 style='border:none;'> on August 4, 2009, 9:32 pm, in reply to "Re: Hyundai Lantra stutter / misfire"
Peter Mutlow

Evening Rich,

4 gas readings would be helpful.

Regards

Pete M

Fixed #

Posted by Rich Lintern on August 5, 2009, 7:39 pm, in reply to " Hyundai Lantra 2.0 1999 - Misfire under light load #"
Message modified by board administrator August 6, 2009, 2:41 pm

Hi Thanks for your responses,
I didn't get much chance to look at the car today so i decided to give the engine a flush and oil change.I wouldn't say it's perfect but it's improved a great deal. customer has taken car for a trial period.. Thanks for all your help.
Rich

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