erikv11

Jazzy_J, on 10 February 2012 - 12:52 AM, said:

You've got it backwards there. Long trips = easy on the oil = change oil at normal intervals or longer. Short trips = change oil earlier.

This mod has been discussed into the ground on some forums, one thing you should know about: if you live somewhere really cold, like in the midwest US or Canadia, then on the highway the throttle plate can get iced up and get sticky. Happens to my NA once or twice each winter.

I agree with you guys that failure is rare, I even +1'ed that it sounds like BS that there are no codes. Still, just sayin ...

The mechanic became aware of this several years back when someone brought in a DIY head swap that burned a valve in the same cylinder in the first couple thousand miles after the swap. The injector was clogged, no codes. So now he checks the injectors whenever he sees burned valves. And this guy is good and not prone to BS.

Injectors go bad. The ones on my car never have, to my knowledge, but the indy mechanic in town here has seen more than one white block with burned exhaust valve due to clogged injector and running lean. And no codes.

That's a nice, ordered list, for the record this is where the other necessary things for spark fit in:

3.5 Cam sensor
4.5 ECU takes info from the various sensors and tells coil to spark
5.5 Coil wire