Originally Posted By: yonyon
That picture makes it look pretty easy to get to those plugs. I think I'd be much more confident in changing those plugs out than trying to get the wackadoo oil dipstick back in its home. It's a very complex motion that requires practice, isn't it?
That oil dipstick is just DUMB. I can never get a good reading on the first try.
Driver side coilpacks look like CAKE minus the intake. Maybe i should do them soon.
Reviving an old thread. The pics appear to be gone - so I will repost them here, but there were weird deposits on them. On another board people were saying it was likely due to me driving the car too lightly. This video was from immediately before the plugs were pulled. I wanted to get an idea of plug condition after a minute of WOT. There was a good headwind which I figured would keep my speed down and load up. The CEL was for an Evap solenoid. I just changed the plugs again and they look exactly the same - this time ~30K.
This was obviously in controlled conditions. Please don't contribute to say that I am an idiot for exceeding 55mph.
Not really looking for any advice, just a follow up.
My spark plugs on ford focus with 112k miles looked better than yours.
The electrode was worn a bit more but there was no soot/buildup.
Isnt there some federal mandatory 100k warranty on "emissions" parts?
Probably why they slap 100k label on spark plugs.
Originally Posted By: Rust_Belt_Pete
My spark plugs on ford focus with 112k miles looked better than yours.
The electrode was worn a bit more but there was no soot/buildup.
Isnt there some federal mandatory 100k warranty on "emissions" parts?
Probably why they slap 100k label on spark plugs.
Like others mentioned OP has 50k plugs and not 100k plugs.
To me it also looks like the problem is the car and not the plugs.
Denso Iridium Power (long part number tarting with I, like IK20) is like NGK's Iridium IX, with about the same life 40-60k. Both of these have the idirum center electrode with the non-platinum ground.
Denso Iridium Long Life (long part number starting with S, such as SK20R11) are like NGK's Laser Platinum, and should also last over 100k. These have the iridium center and platinum ground.