Lack of power when accelerating

1997 Hyundai Coupe 2.0 SE manual
Car: Hyundai Coupe
Year: 1997
Variant: 2.0 SE manual
Categories: Running Rough, Starting & Power Loss
when accelerating up hills the car gradually losses more power than expected. on flat after hill car judders, also appears to decelerate faster than would be expected when foots of gas peddle also. These problems are less noticeable below 30 mph. This car was recently purchased and problems where noticed on drive back.
any help would be greatly appreciated
Problem added: Jul 12, 2009 (14 years ago)
could be electrical missfire,this engine doesnt usually jump timing belt. is engine man light on?
try looking at plugs 2 see if any are black, if so swap coils around 2 see if fault moves.
did you buy from a garage as 3 mounths min warantee?bb
Answered Jul 13, 2009 (14 years ago)

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