ENGINE BUCKING VIOLENTLY WHEN WARM

1994 Daihatsu Mira

Tiny

Yuebi

October, 17, 2010 AT 3:50 PM

Engine Performance problem
1994 Daihatsu Mira Front Wheel Drive Manual 119000 miles

My car experiences violent bucking when engine is warm. The top speed is limited as a result of this bucking that kicks in at 70mph. I also have this problem occurring randomly at lower gears upon acceleration. Could this be an EGR valve problem? I have already upgraded the fuel pump, fuel filter, and larger injectors, but the problem remains. I'm extremely annoyed. Please help.

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