Mechanics

ENGINE ONLY IDLES, WONT GO ABOVE 1000RPM

1984 Jaguar XJ6

Engine Mechanical problem
1984 Jaguar XJ6 6 cyl Two Wheel Drive Automatic 85000 miles

Hello,

car will start, run and hold idle at 800 rpm+-,
but will not go above 1000+-.

if you step on gas, it will stumble to 1000rpm, but will resume idle when off the pedal.

Return line on FPR is pinched, otherwise car dies.

New plugs, cap, and rotor.

Much thanks : )
Avatar
Airmanlarson
September 12, 2010.




Hello. Thanks for the donation. Much appreciated.

Start by removing the clamp/pinch from fuel return line and check fuel pressure is holding. Sounds like you may have a bad FPR or fuel pump and the system is not holding the correct pressure.

Dave H
Sep 12, 2010.


AD