Where do you get them for $4.99?
Last time I checked, they were almost $7.
Last time I checked, they were almost $7.
Change those Iridium Spark Plugs !!
- Thread starter dwendt44
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What brand? Autolite? If so, those aren't going to last more than 30k...
I can get the identical plugs from RockAuto any day for $9.99/plug.
Oops. What was I thinking? I meant to say PartsAmerica, not RockAuto. And yes, they're $9.99/plug, shipped free on orders over $50.
I recently replaced the double-plats in my Mazda6 (3.0L). I put 60,000 miles on those since the car was new. My manual says they're good for 100,000, and I believe they are. But I don't think that's a great idea for an engine with aluminum heads. It took quite a bit of force for me to loosen the OEM plugs. That made me very, very nervous.
The car came with Motorcraft double platinum which I replaced with the equivalent NGK's. Engine runs and accelerates smoother, gas mileage appears to have improved as well.
The car came with Motorcraft double platinum which I replaced with the equivalent NGK's. Engine runs and accelerates smoother, gas mileage appears to have improved as well.
I just pulled my OEM plugs in my 2.4l 2004 Tacoma at 30108 (30k recommended replacement). I have heard platinum, platinum, platinum for the OEM but they were standard. All I have to say is Wow were they worn. I don't mean damaged or anything, just about a .060 gap. I replaced with NGK Iridium IX and am just waiting for my filter to dry so I can re-oil and install to check for any improvement.
By comparison, the iridium in my Toyota Matrix were replaced at 50k and although they showed a little wear, they were a whole lot better than the Tacoma's. I also put NGK Iridium IX's in it as well. We'll see in another 50k.
By comparison, the iridium in my Toyota Matrix were replaced at 50k and although they showed a little wear, they were a whole lot better than the Tacoma's. I also put NGK Iridium IX's in it as well. We'll see in another 50k.
I agree, I changed mine out at 85k on my 2001 Civic and it made a noticeable difference. This board has made me do more work on my car than Honda specifies at the mileage I'm at, but I guess I sleep better at night.
I paid $11 apiece for them.
I paid $11 apiece for them.
If I notice much improvement after a tune-up then I didn't do the tune-up early enough.
The original Motorcraft plugs in my '97 Escort were double platinum and were supposed to be 100,000-mile plugs. On a hunch at about 50,000 miles I removed them and they were eroded way out of spec. After replacing them the car idled much better.
Don't laugh, but the only plug I've had success in running 100,000 miles has been the Bosch Platinum +4, though it is politically correct on BITOG to bash this particular plug. The car has almost 312,000 miles on it now.
Don't laugh, but the only plug I've had success in running 100,000 miles has been the Bosch Platinum +4, though it is politically correct on BITOG to bash this particular plug. The car has almost 312,000 miles on it now.
The Iridium spark plugs are made to last at least 100,000 miles.
I noticed that my 2003 GMC Sierra was running rough and did the Techron, etc cleaners with only temporary results.
With 84k, I pulled the factory Iridium plug out and found it worn down quite a bit.
The gap suppose to be .040", but mine was .060". They are not suppose to wear down much...
So, I looked at the engine closely at Idle and found a small piece of loose electrical tape shaking. Thought I'd take a mental note on that and look at after I put in the new Iridiums.
Put in the new plugs, fired it up and allowed it to warm & idle.
The skaking was gone, heck, I didn't even had to go by just that - the engine smoothed out very well !
The gas mileage also went up about 0.5 MPG.
Power is back, engine runs smooth throughout the RPM's and it has the throttle response back.
Moral of the story:
The Iridiums "can last", but the quality of the engine's performance will suffer if you push it.
They were only $4.99 each and I highly recommend you change them out well before 100k.
Comments and experiences are welcome.
I noticed that my 2003 GMC Sierra was running rough and did the Techron, etc cleaners with only temporary results.
With 84k, I pulled the factory Iridium plug out and found it worn down quite a bit.
The gap suppose to be .040", but mine was .060". They are not suppose to wear down much...
So, I looked at the engine closely at Idle and found a small piece of loose electrical tape shaking. Thought I'd take a mental note on that and look at after I put in the new Iridiums.
Put in the new plugs, fired it up and allowed it to warm & idle.
The skaking was gone, heck, I didn't even had to go by just that - the engine smoothed out very well !
The gas mileage also went up about 0.5 MPG.
Power is back, engine runs smooth throughout the RPM's and it has the throttle response back.
Moral of the story:
The Iridiums "can last", but the quality of the engine's performance will suffer if you push it.
They were only $4.99 each and I highly recommend you change them out well before 100k.
Comments and experiences are welcome.
Pretty much sums up what happend in my '03 civic. Honda says the oem platinum plugs can go around 110k. I changed mine out at 90k. Car felt better and my mpg went up. I'm sure the oem plugs could've lasted 20k longer... But i see no point in going that far, just like i could probably go with a longer oci, but i see no reason to push my oil or plugs to their limits.
I pulled the original platinum plugs out of my mother's Sunfire at 100K miles and they were worn enough to warrant replacement, but nothing like yours, tpitcher. The gap had eroded to around .050, and they were at .044 new. So, many plugs can go 100K, but it's a good idea to check them well before that to see how they're doing.
It's no suprise that you changed the plugs after 84k and saw an improvement.
There isn't .020" of expensive material to wear down, so I wonder if the plugs were ever set to .040" initially.
There isn't .020" of expensive material to wear down, so I wonder if the plugs were ever set to .040" initially.
changed the wifes plugs in her 00 malibu 3.1L at 60K
on looking at the plugs. the nipples on the plugs hook was worn smooth. the car had a rough idle. replaced with AC delco plugs. I guess iridium or can they be plat? I just asked for the OEM replacement. also replaced the wires too. the idle is alot better. I never go by what the factory reccomends. I go by how the vehicle is acting.
on looking at the plugs. the nipples on the plugs hook was worn smooth. the car had a rough idle. replaced with AC delco plugs. I guess iridium or can they be plat? I just asked for the OEM replacement. also replaced the wires too. the idle is alot better. I never go by what the factory reccomends. I go by how the vehicle is acting.
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