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Normal spark plug wear?


Supreme Cutlass

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Before I got my car, I was told it got a tune-up when I called the shop that worked on it. The car hasn't been driven much, so this is theoretically 300-500 miles of wear... yeah right. Unless this amount of wear is normal..

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its hard to tell from the looks of it as far as it looking like its not burning the fuel well and looks oil soaked, but the electrode shouldnt be worn down that much. might want to try one range hotter.

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its hard to tell from the looks of it as far as it looking like its not burning the fuel well and looks oil soaked, but the electrode shouldnt be worn down that much. might want to try one range hotter.

 

I just looked at the brand... Bosch... :roll:

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BOSCH? :puke: no wonder they look like crap. I's say probably 5000 miles for shit like that.

my bro's Cutlass had 2 boschs and 4 ac delcos in it, the engine kept misfiring, the bosches were burnt and oily. (but in fairness, i think they were two left when someone didn't finsh changing all the plugs.)

I also pulled AC Delco plugs from a 89 pontiac w tech 4. the center electode was worn almost even with the insulating tip. I measured the gap, is was 2 and 1/2 times the proper gap. With about 145000 miles, do you think that might be the factory plugs?

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