1990 Jaguar XJS Idle on start up

1990 JAGUAR XJS
72,000 MILES • V12 • 2WD • AUTOMATIC
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JAGUARMANXJS
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I recently just added some injector cleaner (seafoam) in my tank and ever since doing this my car idle's very rough, and sometimes doesn't idle at all. I tried to rev it maybe believing some gunk built up as I only drive it 1 day a week or so. Now it won't idle and sometimes when I try to rev it starts to spit and backfire...and help would be appreciated. Fuel filter clogged???
Mar 25, 2009 at 1:47 PM
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DAVE H
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replace fuel filter .. clean fuel injectors they may be clogged
Jan 10, 2010 at 7:45 AM