Pretty sure it had original plugs in it, replaced those with some autolites that were on sale, soon to put champion coppers in it though (personal preference).
Try champion part number 7989 it's one solid piece not 2 like motorcraft I've had good luck with them
Honesty I've just used Champion all year's or whatever less than five bucks and have never ever given me any issues.
And timing belt, and spark plug change every 90 K miles or so.
Sounds like it could be a spark plug. For some reason the Prelude likes to eat through them. Shows the exact same symptoms you describe (loss of power, different exhaust note).
going on almost a year on champion $1.99 copper plugs and my car runs just as good if not better than when I had the oem plugs in there...
I too happen to have the champion plugs that iceman has. Happened because Murray's didn't have the dealer only replacement plug and couldn't get them. I had no choice because the stock ones were blacker than my tires. They rev just fine and seem to run just as well. I was told that a long time ago champions were known to become permanantly stuck in the block though. I plan on changing soon just in case that rumor is true.
Champions are crap.
I do know certain Toyota "sporty" cars run like crap on Champions.
STAY AWAY FROM CHAMPION SPARK PLUGS they tend to have a insulator cracking problem
Write your review
Help others - share your experience with this part.
