after how many miles should you replace the plugs ?

 

I'd recommend it once a year or every 15,000 miles (depending on how much you drive it.

Along with the plugs, do the cap, rotor, wires, oil change (if due), fuel, air, and breather filters. Also inspect the belts and hoses.

 

I do mine once a year... done as part of my major tuneup. I'm probably the only guy here that replaces $80 MSD 8.5mm wires every year!

 

Standard plugs are to be changed every 30,000 miles. Usually time is not a factor.

Platinums are good for 100,000 miles. GM has even started using Iridium plugs which are also good for 100,000 miles. What confuses me about the Iridium plugs is that Toyota recommends replacing them at 125,000 miles.......

Cap/ Rotor.....usually good for 60,000 although you can change them every tune up if you feel like it.

Fuel filter is 30,000 miles. You DO NOT want to put this off past it's interval. You don't want to know how many fuel pumps i've replaced due to a plugged filter killing the pump.

Replacing the wires every year is a waste of money. There really isn't a replacement interval for wires. At work we only replace them if 1 or more is bad or the car has over 125,000 miles. I've seen them go bad (not burnt, actually open) at 40,000 and I've also seen original wires on a 1987 Buick with ~200,000 miles...still good!!!!

 

have a used set you wanna sell ?

 

Tom, you're insane!

 

I am going to to argue that. Wires should be replaced every 5 years, because they crack, and wear. Sure you can run them for 400 million miles, if you enjoy hesitation and being shocked if you have to time your car.

But Tom you are crazy for replacing your wires every year. I could see every 2 or 3. But every year is kinda a waste of money. Although you could probably sell those to someone.

 

No arguments here! I don't know anyone else that changes the rear gear lube yearly, like I do, either! Then again, I must have +240,000 miles for a reason, eh?

 

Actually my father is Big on changing fluids in vehicles, so he probably contends with your rear gear fluid changes.

 

Could you guys give me a brief run thru of how your change the rear gear fluid? It's on my to do list when I change my u-joints (finally!) From what I read inside of the haynes manual, you just loosen up the bottom bolts on the rear end and let it drain into something, then fill it back up. But where do you pour the oil into? Do you need a grease gun? Just wanted to know. Thanks guys! Eric

 

There is a fill plug in the side of the diff. It requires a square socket...but I think a regular 1/2 inch square-end will work....I don't remember.

 

Your right CaliCamaroRS, draining the fluid was easy but refilling it was a pain due to the angle the hole is placed. I had to get a funnel that twisted to the correct angle. Next time I change it I am going to get a chrome cover.

 

The chrome covers are fun; I've got 'em... only problem is, neglect 'em for a month or two and they start getting a bit of rust on 'em. And it's such a pain to wax the little inch-wide gaps between the bolts!

Elevario, don't forget, you'll need to remove the cover completely and install it with a new gasket, can't re-use the old one or you'll get leaks. To fill the diff, I slide an old piece of fuel line over the tip of the gear lube container... then I put the fuel line into the fill hole, invert the gear lube container under the car, and squeeze the container. Just make sure the hose doesn't pop off the container opening or you'll get that foul smelling gear lube all over the place. That stuff makes me yak... ugh.