My Tacoma is a 2001 4x4 with 405,000kms. It is an awesome truck and I take care of it the best that I can. A few days ago I started hearing a ticking noise from the pass side of the engine. I assumed that it was a stuck lifter. I checked the oil level and added about a cup of oil (Amsoil). Of course no change. I suspected that it might be an injector going bad. However, I had installed Bosch Platinum Plugs about 15,000kms ago, the second set I might add, and so I decided to check them. I started near the noise and it turned out that the middle plug had started to come apart!! The ceramic was loose and the chrome screwcap had come off and it had started to do some blow-by as was evident on the valve cover!! I put a new one in and everything is fine. Phew, I thought that I was in for some expensive internal work!! Anyone else have this type of problem with Bosch Plat plugs?
Thanks, Robin

 

I'm about 3k into my first set, no problems yet. In fact I thought they are quite good. Will keep you posted

 

Waste of money .02$--had them and didnt notice anything different about them.

 

Congratulations, you've just overspent by about $5 per plug. Those probably won't help your performance at all, esp if they are falling apart.

 

they are garbage. and so is anything else with more than one electrode, but especially bosch. even the conventional bosch plugs suck. stick with the factory plug and you will get the best performance for the money.

 

i put 40K on a +2 set (the +4 are worthless) w/o issue

i am happier w/ NGK. which is a dual electrode for a 3.4!

 

Bosch plugs = crap


Should have done a search

 

yes bosch and toyota's don't mix

 

NGK or Denso on anything imported. Bosch is bad

 

Nor do Hondas. I pulled a broken Bosch out of my mom's Accord once.

 

Local toyota expert here(in Orangeville, Ontario) recommends factory plugs and wires for best performance. Problem is they cost like $400 for a both. If they don't make any difference, you can't return them.

 

Yeah man, throw that bosch crap out. Go get youself a nice set of NGK's. NGK or Denso is all you want to use for ignition stuff on your yota..

 

very helpful

thanks everyone

 

Bad
Overpriced
Sh t
Change em
Hurry