Vehicle: 1995 XJ Sport, 4.0, 5-spd, 230k miles
Gets low 20's on the highway and runs smooth
At idle, there's a slight miss and you can smell it's running rich.
Anyway, the miss has been there for ages, and emissions get a little worse every year. We got it to squeak by by revving it up to 1100 rpm for the idle portion.
I replaced the cap, rotor, wires and plugs (Champion Truck). I also replaced the idle air control motor. None of that made a difference. The tech said the timing must be off, but I believe that's not adjustable on these, correct?
Any other ideas? The coil is the only ignition part left to replace. Not sure how to adjust timing. Perhaps it's a fuel injector whose spray is uneven at low power settings. Any suggestions?
Gets low 20's on the highway and runs smooth
At idle, there's a slight miss and you can smell it's running rich.
Anyway, the miss has been there for ages, and emissions get a little worse every year. We got it to squeak by by revving it up to 1100 rpm for the idle portion.
I replaced the cap, rotor, wires and plugs (Champion Truck). I also replaced the idle air control motor. None of that made a difference. The tech said the timing must be off, but I believe that's not adjustable on these, correct?
Any other ideas? The coil is the only ignition part left to replace. Not sure how to adjust timing. Perhaps it's a fuel injector whose spray is uneven at low power settings. Any suggestions?