Opti spark plugs

Time for a new set of plugs for my ’07 175 Opti. I know they won’t be cheap, any recommendations on the best place to buy? Best plug?

Plug #6 should be fun to change….

Try a auto parts store I get my pluggs from a Car Quest Store way better than a marina also I have good luck w Oriely Auto Parts ,NAPA is good too.

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Plug #6 should be fun to change….

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I’m pretty sure you need a special wrench to get at that plug. My buddy has an opti and had to take it in to get that plug done. The mechanic told him they have a tool just for that one plug. It isn’t used for anything else. Of course, he could have been just insuring repeat business.

I wouldn’t change the plugs until it starts to miss. I changed mine and it never ran the same as it did when it was new.

Be super carefull gapping them, they are super touchy and need to be spot on!!

I was told not to gap the iridium plugs at all, even if it gives specs in the manual. do you do different?

It was starting to miss a little late last fall, but the cold could have had something to do with that too. I’ve got 2 seasons on these plugs and I always try to change every 2 years.

I was told the same too, not to try gapping those plugs.

I don’t remember exactly how I did it, but when I had my Opti, I changed mine regularly. The first time I had it done the dealer charged me over $20 a copy for plugs, plus labor. After that I cross-refenced them and found plugs for as low as $2.50 each. At that price I changed them on a whim and never had a problem with fouling or misfire. I’m sure with a little “shadetree engineering” you can figure it out. jerr

My dad has a 135 opt and he changes his own plugs except #6, without a special wrench. I am the one that has to do that one. The best way I have found to get it out is the socket- 3in extension, then a swivel socket adapter, 3 0r 6 in extension to get the ratchet out of the housing. Putting the new one in if your hand cannot fit, find someone with a smaller hand to get it the threads started. It may take a little bit at first but after a few tries it gets easier. Cheaper than taking it in and getting done.

crawler – do you re-gap the plugs or leave them as is?

re gap!! every plug double checked to make sure plug is to the right setting. Never had a problem. Dad gets his plugs at Advanced Auto for like 9 bucks a piece.

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My dad has a 135 opt and he changes his own plugs except #6, without a special wrench. I am the one that has to do that one. The best way I have found to get it out is the socket- 3in extension, then a swivel socket adapter, 3 0r 6 in extension to get the ratchet out of the housing. Putting the new one in if your hand cannot fit, find someone with a smaller hand to get it the threads started. It may take a little bit at first but after a few tries it gets easier. Cheaper than taking it in and getting done.

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Good advice

That # six plug is a fun one. I have found that a chunk of shrink tube works awesome for getting that plug back in again, onces it bites, use the socket to snug it back up.