dealer only spark plugs??

[CAP1]

i have saved a good deal of money on gas by replacing the oem plugs with bosch or ngk. i have yet to see an "economy" car get 100,000 mile plugs from the factory, gotta be luxury/performance cars with that service interval.

 they have to rate them. i've seen it once or twice.

[vorticon]

full set of plugs for my car costs 15 bucks. takes 10 minutes to do the job. may as well change them regularly.

bastards want $100 for a set of wires though. I'd almost prefer to do the rear plugs on my alero and get wires for less than half that.

[CAP1]

full set of plugs for my car costs 15 bucks. takes 10 minutes to do the job. may as well change them regularly.

bastards want $100 for a set of wires though. I'd almost prefer to do the rear plugs on my alero and get wires for less than half that.

 better that then 8 coil packs. 

[SilverZ06]

i had 2 bad experiences with bosch plugs in the old 80's ford 5 liters. one time in a gm 5 liter. i go out of my way to not install bosch in anything i work on.

This. I wont even run a bosch in my lawn mower

[Shuffler]

My 98 Z-71 Truck had the 100,000 mile plugs and I ran them till 106,000 before I developed a miss.

I had gone in to buy plugs when it was around 50k and they asked if it was missing. I said no. They told me about the plugs and so I did not replace them at that time.

[CAP1]

My 98 Z-71 Truck had the 100,000 mile plugs and I ran them till 106,000 before I developed a miss.

I had gone in to buy plugs when it was around 50k and they asked if it was missing. I said no. They told me about the plugs and so I did not replace them at that time.

 i think it was cvh? that said it? once you pass about 40-50k miles, those plugs ain't worknig as they should be. whether or not you feel it, they're not.

[Shuffler]

Seems odd to me to wait that long. In any case when changed, none broke off or were messed up.

[Captain Virgil Hilts]

By the time you get to 100K miles, those well worn plugs have put an excessive load on a set of plug wires, and the rest of the ignition system, increasing the chance of failures, and shortening their useful life. A good set of plug wires is between $50 and $120. One coil pack that feeds either 1 or 2 cylinders is at least $50. A cap and rotor for a system that uses the "distributor" to do nothing more than switch secondary voltage from one cylinder to another when the coil fires is at least $50. After about 50K miles, the loss in fuel efficiency from relatively worn plugs is between 1% and 2%, with gasoline over $3.00 a gallon in most places, and the efficiency loss only gets worse.

Tell me again how expensive a $6 spark plug is.

There are two reasons to claim 100K mile tune up intervals. One is to satisfy the EPA. The other is to sell vehicles to people too stupid, too cheap, and too lazy to have them serviced at decent intervals.

[CAP1]

see, that's the problem.

 everyone has a "friend" that always seems to know more than the guy that works on cars for a living. they seem to want to believe this "friend" who heard this or that on the internet, or they want to believe those little aol news snipits, or the news show that goes undercover, searching for crooked mechanics.
 they don't think that we know what we're talking about, and since they don't "feel" anything wrong with their car, then we must be wrong.


 i just went through a LOT on a lexus with an o2 heater code. this guy kept telling me his cousin, or friend, or nephew, or someone told him it was XXX. they were ALL wrong. it turned out he had a bad computer. but i had a helluva time convincing him of that. 

[MaSonZ]

Real trucks don't have spark plugs. 

RealER trucks have a C for Correct  bowties are to pretty to get dirty, and GM aint much (if any) different then a Bowtie 

[SIK1]

You mean like this?



Yes it's in my truck.

[Flench]

Question : If I run a to hot of plug in my F150 will it not burn up a piston ? I'm running 10 over in it now .