A little advice here, as far as I know I have to replace the primary O2 sensor, the DTC 41 (OBD P0135) keeps coming on and of randomly.
A few days ago a replace the spark plugs and adjust the valve clearance according to OEM specifications.
:confused:My main concerns are...
After the factory spark plugs were "done", I put in these NGK Platinum plugs. These plugs have fired the engine for 187 000 kilometers, and as far as I can tell without a misfire. But this is really due to the high energy ignition system, I suppose.
As the images show, the platinum...
I got some NGK iridium plugs, but haven't had a chance to put them in yet. I was planning on doing it this saturday, but I was told that 1st gen's don't agree with iridium plugs.
Has anyone ever heard of this or had any experience with NGK iridium plugs?