How far have you gone on a set of plugs?

Not a Tacoma, but to the best of my knowledge my 2006 Tundra went 231,000 miles on the original plugs. Unless they snuck a change in and didn't charge for it. Which is pretty unlikely.

 

I'll go 30 kmiles before a plug change on my '06 1GR-FE.

Its far enough. Plugs are not expensive. Only takes about 1 hour to change them.

 

I currently have 76K miles on my truck with the factory plugs still in. I plan to change them at around 100K.

 

Almost 107k. Oops

 

When plugs get worn it can make the ignition coil work harder. When coils fail sometimes they short out internally. A shorted coil can potentially damage the coil driver circuit in the pcm.

 

101k on my OEM plugs because I bought it used and it still had half NGK / half Denso like factory.

Driver side:



Passenger side:

 

Just clocked over 100K, doing the maintanace oil/fluids/belts (because 1 is squealing) so I figure I'd do the plugs at the same time. Will be interesting to see what they look like though it's more a mpg thing and since I'm changing the belts...

 

Plugs are cheap and easy to do, but I often don't think about them like I should. So mine always end up pushing 60-70k out of them. I have a new set in the garage waiting to go in. These I think are at 50k? Got 235k on the truck.

 

115k miles on my Tundra and the plugs are clean as a whistle. Put them back in and kept rolling. I don't like to fix what ain't broke.

 

I just changed mine after about 100k, and this is exactly how mine looked as well. I guess I’ll be expecting to change them again when my truck creeps up on 350k

 

Has anyone else on this thread seen this other thread on seized spark plugs? https://www.tacomaworld.com/threads/seized-spark-plugs.478610/

Legit? Thoughts?

 

Changed mine today at 160,000 on original plugs. Old ones were half NGK and half Denso. I changed to Denso Iridium plugs and noticed a difference right off the bat. Idle and acceleration are both noticeably smoother.

 

Maybe it's just me and the technician side of my thinking, but I prefer to maintain my vehicles under the standard of manufacturer recommendations at a minimum. I don't want to drive my Tacoma until it starts to miss and stumble, or other things happen. I like to change my stuff out so I don't have to worry about that happening. Nothing worse than being out of town and having an old spark plug fail, and leave you stuck at whatever town you are located at. I change my oil every 5k. I change my transmission, differentials, t-case, coolant, brake fluid, etc., on regular intervals to maintain my vehicle. Why wait until something goes wrong to fix it? Then you risk other inherent problems.

As for the comments I noticed about the different brand spark plugs, I recall there was a lawsuit years back where NGK and Denso sued Toyota over contract breaches. The settlement was that in V-engines one side got Denso and the other side got NGK. I change my spark plugs at regular scheduled intervals also because it isn't so much the electrode that wears down, but the resistor inside the spark plug begins to break down. This causes the ignition coil to have to work harder, and strains the coils, increasing the risk of premature coil failure.

 

2013 Tacoma access Cab 4x4

Changed at the recommended interval---30,000 miles

Denso copper

TOMB

 

Changed mine (‘04 3RZ) at 92K because the truck bogged under heavy acceleration. I cleaned the MAF and TB at the same time so I can’t say which actually fixed my issue. I went with iridium because I believe technology advances and improves over time.