Engine Performance problem
1990 Jaguar XJ6 6 cyl Two Wheel Drive Automatic 72,000 miles
I have a 1990 Jaguar car. Recently I just got gas at a new place and the car would just stop everytime I would stop at a red light. Then when you go up a hill the car has very little power as you go up the hill. This car is not driven very much at all and when it is maybe 2-3 miles a day. It starts just fine no light indicaters come on
Check for burned or sticking valves.
Check for incorrect valve clearance.
Ensure fuel system is okay.
Ensure engine compression is okay.
Ensure ignition system is okay.
Check for incorrect camshaft timing.
Check for incorrect octane fuel.