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Tahoe Tune-Up & Spark Plugs


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I'm about to start a LONG overdue tune-up on a 97 tahoe and I wanted to get some input. I'm changing out the plugs, wires, cap n rotor but when I went to buy the plugs, the dealership said it was best to use the $12.99 Delco plugs over the $4.99 Bosch plugs because i'd get better mileage ??? WHAT ! Do the plugs make a difference ? Spark is spark and fuel is fuel, if I burn the fuel why does it matter ? Can any of you guys gimme some insight on this, i'm sure you've been through some trial and error.

 

Thanks

Mike

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There's more to spark than just spark. Bigger, hotter spark burns more fuel/air more efficiently, so there is some merit to what they say. How much merit it's a judgement call. I used the AC Delco plugs in my truck the originals lasted 100k, I expect the same from the new ones.

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Thanks asilverblazer, i guess that makes more sense than telling me to just buy em :uhoh: Now I just have to find the generic part # and get em off ebay before i'm screwed $400 for a tune-up after I get shafted with $150 wires too...

 

 

There's more to spark than just spark. Bigger, hotter spark burns more fuel/air more efficiently, so there is some merit to what they say. How much merit it's a judgement call. I used the AC Delco plugs in my truck the originals lasted 100k, I expect the same from the new ones.

 

 

 

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