2002 Mini Cooper S Miss on heavy acceleration

2002 MINI COOPER S
97,000 MILES • 4 CYL • FWD • MANUAL
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PANGELONI
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  • 1 POST
I have a 2002 MINI Cooper S, John Cooper Works with 97,000 miles. Lately, i get a miss when I am accelerating up from low RPMs (up to 3,000). The heavier the load on the engine (i.e. uphill, passengers) and the harder I push it the worse the miss is. This condition seems to be even worse when the engine is not up to temperature. I have also noticed a lot of 'soot' coming out of the tailpipe, as it accumulates on the boot.
Mar 16, 2009 at 12:01 PM
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JACKR
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  • 5 POSTS
Has it been a while since a tune-up? Sounds like a spark plug breaking down. If you have a bad spark plug or wire, they usually show up while under a load and may run fine at idle or at a steady cruise speed.
Apr 15, 2009 at 10:22 AM