Rough idle and some misses
Alright so i bought my xj on Tuesday was running awesome no problems or mishaps. Then yesterday out of no where it started idling low and missing in cylinders 1 and 2. So we tested spark was good replaced all the plugs cleaned the throttle body battery posts and cables. Still no change so any ideas what i should change check or..? Anything would be helpful thanks in advance.
Re: Rough idle and some misses
Do you have any check engine codes?
Re: Rough idle and some misses
Only for the misses in cylinders 1&2
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Re: Rough idle and some misses
Did you check coil for cracks, distributor cap, rotor, coil wire.
start at the coil and go over every inch.
Re: Rough idle and some misses
injectors for those cylinders clogged?
Re: Rough idle and some misses
Haven't checked the coil yet. I don't believe the injectors are clogged how would i clean them either way?
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Re: Rough idle and some misses
I'm hoping it's not loss of compression in there. You could remove the injector and try to clean them out with a spray like throttle body cleaner. Or you may have to get new injectors if they are indeed the culprit
Re: Rough idle and some misses
Swap injectors 1&2 with 5&6 to see if codes change. I had a miss that slowly got worse and it showed miss in cyl 6. Replaced plugs,wires, cap,rotor & did a compression check. Had a bad injector on #6.
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Re: Rough idle and some misses
Did you put gas in the tank in between running well and not?
Re: Rough idle and some misses
I did actually
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Re: Rough idle and some misses
I am going to suggest you have some marginal injectors. Run this tank out and then fill with premium. That will probably fix it. But for a permanent fix you will have to replace those injectors
Re: Rough idle and some misses
Before replacing injectors do a compression check.
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Re: Rough idle and some misses
Planning on a compression check asap.
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Re: Rough idle and some misses
I am thinking it might be low blinker fluid and bad muffler belt. Get them check asap!
We did take the TB off and cleaned the TB that did not seem to help much.
Re: Rough idle and some misses
Haven't been able to do a compression test yet but how likely is it to be heads if its not using any coolant or oil?
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