Hi everybody, I have 91 Astro with TBI engine. If I'm driving and I want to accelerate, the engine hesitates and slightly loses rpm until I press gas pedal enough for it to downshift, then its completly fine, no problem in high rpms. I recently changed sparkplugs because the engine was running harsh at idle, but this problem persists.

Thanks for any advice.

 

runnin well in highidle speed, sounds like a problem with an airhose,

 

questions to petrik.grundmann@gmx.at best regards peter