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Old 13-Dec-2006, 12:58
Herb Herb is offline
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500SD
 
Posts: 792
Join Date: May 2005
I changed my 750 SS to NGK iridium plugs and it also ran like a dog. It would not pick up cleanly, and was hesitant at part throttle openings. Following a search here I experimented with larger spark plug gaps but to no avail. I know other people have found improvements using them, however I went back to standard plugs and all is well again.
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