Hi.
I have an 97' EL XR6 , drives like a dream on gas , however on petrol ever since I bought it , it jolts and well , sort of vibrates in a way. When you accelerate there is practically no grunt to it, struggles to get past 80.
Changed the injectors, didnt make a difference. Fuel pumps fine. Anyone got any ideas ? Need help bad.
Cheers.

(any resolutions give us a text on 0420294106)

Could be a buggered fuel filter....If so then it's cheap and easy to replace.

Replaced fuel filter , wasnt that :\

Vacuum leak, The LPG system doesn't rely on the MAP sensor so i would say check the line to the MAP sensor if not then grab some carby clean and spray around any gasket on the inlet side the revs will change if the carby clean gets sucked through a gap. If that comes up ok the fuel pressure regulator has probably s**t itself. Check vacuum leaks 1st but.