I ran leaded race gas because i'm an idiot! Didn't even think of the possibility that it could be leaded. All i saw was a sign that said 110 octane and my eyes got all big! Anyway, i've tried the fuel filter and it didn't help much. I'm sure that i fouled out the o2 sensors. How many do these trucks have and where can i buy them at a decent price? I live near Raleigh, NC. Price ballpark? Thanks guys

 

I have ran my sensors with C16 and I don't think are gone yet. Anyway I have read that the Denso O2 sensors are twice as resistant to lead fouling as the stock ones. I bought a couple of the Densos awhile back, but haven't installed them yet. The part # was 234-4071. Good Luck whatever you do.

 

Sounds STRIKINGLY FAMILAR!

I did the same thing a few months ago.

The CHeapest place to buy them is MURRAY DISCOUNT AUTO. it is a chain of auto part stores (at least up here in Michigan)

you may as well do the following also:
1. Change all 4 O2 sensors
2. Change your Fuel Filter
3. Check your spark plugs (may need to be replaced)
4. PRAY that you catalytic convertors are not clogged.

I ran about 5 gallons through my truck that already had about a 12 tank of gas. O2 sensors went a few weeks later, the lead from the race fuel gets on the sensor inside the O2 sensor and basically burns it up.

I learned my lesson. Luckily my Cats are OK, I still check them once in a while to see if they are glowing orange or normal color, so far, normal color.

 

one last thing,
the Front passenger side O2 is a b!tch to change.

(remove fromt tire, remove plastic inner wheel cover, use a SHORT (think regular wrench cut in 1/2) open end wrench and wear gloves becuase you'll skin up your knuckles in no time)

 

honest, one last thing

https://www.f150online.com/forums/sh...hreadid=158151

something to consider

 

Thanks alot, IMenace... hopefully it'll clear up with some new sensors. Price?