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rough idle...what am I missing? 850

OK, no EGR, MAF is clean, IAC is fine.

Any more ideas anyone? Could it be fuel pressure? And how do you check that? How about injector function? Even though all of the ignition is fairly new, and I don't see problems inside the dizzy cap, is there anyway to identify a spark problem? (plugs look good)


Just looking ofr ANY other possible causes.

Thanks all!

Ron






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