W210, 2002 Engine - M113.940

Generally the engine runs fine at 115,000 miles, and I have used regular gas for 14,000

When I accelerate leaving a parking lot, the check engine light comes on.

Check Engine Light
P0306 Cylinder 6 Misfire Detected
P0307 Cylinder 7 Misfire Detected
P0300 Multiple Cylinder Misfire Detected

I reset and waited, the CEL comes on again

So, I tried Premium Gas, and poof the CEL stopped coming on. So I went back to Regular gas, and wham-mo, the CEL came on again.

I'm guessing the fuel injectors need replaced. What do you think?

What would a type of gas have to do with the CEL???

Thanks for the help.

__________________
Thanks for the help
Bill Fisher

'86 560SL (186K) - Now a 'classic' : Registered as an Historic Vehicle
02 E430 in the stable
'14 LS460 (Lexus)
- - - - -
'95 E420 (198K) found a new home
'99 E320 (80K) (gave it's life for me as we hit a bumper)
'95 E420 (231K) Sold to a happy buyer, new to Mercedes
'90 300E (65K) Sold to an Mercedes Lover
'92 190E (215K) - retired to the salvage yard
'93 500SEL (214K) - Moved to another family, still runs like a young pup