Average Reviews:
(More customer reviews)These are the stock spark plugs used in many cars, but my story is one from a 70,000 mile 1996 Monte Carlo....
When I bought my car new one of the ways the dealer sold me on it was that it would not need a tune-up for 100,000 miles. So I agreed on the purchase and was really happy until last year...
I began to get random misfires (not setting codes) and a noticible drop in fuel economy...
I took it in, they performed a fuel system cleaning and said for sure that was the cause. It didn't turn out to be, but it set me back moneywise so much that I couldn't do anything more with the dealer...
Finally I read that these plugs have platinum pads on both sides and that the stock GM ignition system is so powerful that it eats them up fast. So I dug in and checked and voila! Cylinder number 3 and 4 plugs had blown the pads off! The gap was .075 or more...
Can't say I'll be using these plugs again. It's a pita to change on the 3100 engine IMO, so I'll try something else.
Sad that manufacturers lie about thier build quality...its ends up being a lot of money our of pocket for the consumer in the end. Not to mention a big headache.
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ACDelco 41-940 SPARK PLUG
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