Ignition coil replacement – toyota tundra forums tundra solutions forum gas national average 2008

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The first time I changed my spark plugs several of them were finger tight, so I blamed the factory for doing a lousy job. The next time I changed them about half of them were finger tight, again. I suspect the factory specified torque value is on the low side and when the engine heat cycles the gasket compresses and the plugs get loose. It is probably a good idea to re-torque the plugs after 1,000 miles or at some lesser mileage.

Some of your coils look newer than others. The original part number has been replaced with a new number so you can see if any have been changed. I think it is a 5 minute job to change them once you know how. I was told to change plugs regularly each 24K because the dealer charged something like 250 to change one. Starting somewhere around 130K mine started losing a coil pack every 1,000-2,000 miles or so. The first time I was towing the boat and I thought the transmission was going out or going to lock up; it was pretty bad starting from a stop but okay once it got going. Eventually the entire right bank of coil packs had been replaced and one on the left bank when I finally broke down and replaced the last 3 which all had cracks. I found them on eBay but I think they were about $69 each. AutoZone had inexpensive sets (~$89?) but I was afraid that they would not last or be a good fit.

Oil and blow-by in there is bad and will cause them to breakdown a lot faster. I haven’t changed the plugs on any of the 2010 or newer Toyota’s we have had yet but the loose plug thing isn’t good. I wonder what a poll of people who have changed their plugs have noticed if we could narrow it down to somethign maybe more specific like engine, year or vehicle.

I have replaced several coil packs on our different vehicles over the years. I can tell you expect to get 150k-200k miles out of factory packs and much less out of the cheaper aftermarket units, especially if they are in hotter engines. I have been stuck out of town before and had to put an aftermarket in because that was all that was available at 8PM same day. I had to replace it less than a year later when it’s ignitor circuit failed. I replaced it with the OEM Denso part which was actually like 20 or 30 bucks cheaper than the crap aftermarket part. That one has been in there 50k and the vehicle is now at 230k miles on all the other original coils. I personally would only change them if they have a problem or the cylinder is burning different (different coloring or more carbon something like that).

The first time I changed my spark plugs several of them were finger tight, so I blamed the factory for doing a lousy job. The next time I changed them about half of them were finger tight, again. I suspect the factory specified torque value is on the low side and when the engine heat cycles the gasket compresses and the plugs get loose. It is probably a good idea to re-torque the plugs after 1,000 miles or at some lesser mileage.

Some of your coils look newer than others. The original part number has been replaced with a new number so you can see if any have been changed. I think it is a 5 minute job to change them once you know how. I was told to change plugs regularly each 24K because the dealer charged something like 250 to change one. Starting somewhere around 130K mine started losing a coil pack every 1,000-2,000 miles or so. The first time I was towing the boat and I thought the transmission was going out or going to lock up; it was pretty bad starting from a stop but okay once it got going. Eventually the entire right bank of coil packs had been replaced and one on the left bank when I finally broke down and replaced the last 3 which all had cracks. I found them on eBay but I think they were about $69 each. AutoZone had inexpensive sets (~$89?) but I was afraid that they would not last or be a good fit.

Oil and blow-by in there is bad and will cause them to breakdown a lot faster. I haven’t changed the plugs on any of the 2010 or newer Toyota’s we have had yet but the loose plug thing isn’t good. I wonder what a poll of people who have changed their plugs have noticed if we could narrow it down to somethign maybe more specific like engine, year or vehicle.

I have replaced several coil packs on our different vehicles over the years. I can tell you expect to get 150k-200k miles out of factory packs and much less out of the cheaper aftermarket units, especially if they are in hotter engines. I have been stuck out of town before and had to put an aftermarket in because that was all that was available at 8PM same day. I had to replace it less than a year later when it’s ignitor circuit failed. I replaced it with the OEM Denso part which was actually like 20 or 30 bucks cheaper than the crap aftermarket part. That one has been in there 50k and the vehicle is now at 230k miles on all the other original coils. I personally would only change them if they have a problem or the cylinder is burning different (different coloring or more carbon something like that).

Sounds like I’d better buy a couple of spare coils before my road trip this summer. Truck has ~145K on it and all the coils appear to be original and I would guess that all the plugs were probably original too. So OEM Denso coil packs are the best for longevity? I plan to run the truck until it dies so from what I’ve seen another 150K isn’t unreasonable.