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My 2017 C43 been running butter smooth since i bought it until i got shell 91 and immediately i got cylinder misfires and that damn check engine light. I am wondering if yall got any advise i checked a couple spark plugs and they look great not wet or over burnt not uneven or anything.
PFL205.064 with M276.823 (Oil pump solenoid defeated)
Originally Posted by StoozyVert
My 2017 C43 been running butter smooth since i bought it until i got shell 91 and immediately i got cylinder misfires and that damn check engine light. I am wondering if yall got any advise i checked a couple spark plugs and they look great not wet or over burnt not uneven or anything.
That is very strange, what octane did you have prior and what fuel station did you use prior. Is the shell station you started using ethanol free? I have been using shell since forever never had issues. Mines a 2017 as well and bought since new.
I had gotten 91 at Valero every fill up before hand, im not sure how to know how to know if that shell is ethanol free either. Also it pumped super super slow so i called my dad who is a truck driver who delivers gas he said maybe it has air in the line.
Originally Posted by W205C43PFL
That is very strange, what octane did you have prior and what fuel station did you use prior. Is the shell station you started using ethanol free? I have been using shell since forever never had issues. Mines a 2017 as well and bought since new.
PFL205.064 with M276.823 (Oil pump solenoid defeated)
Originally Posted by StoozyVert
I had gotten 91 at Valero every fill up before hand, im not sure how to know how to know if that shell is ethanol free either. Also it pumped super super slow so i called my dad who is a truck driver who delivers gas he said maybe it has air in the line.
PFL205.064 with M276.823 (Oil pump solenoid defeated)
You might know already, MB prefers Top-Tier Gas, which shell is supposed to be on the list: https://www.toptiergas.com/
but I mean like I said, I've been using shell all the time and never had issues, I am also wondering if the fuel quality is bad at the station you filled up, hopefully not a big issue and gets resolved on its own.
PFL205.064 with M276.823 (Oil pump solenoid defeated)
Originally Posted by StoozyVert
It isnt on the list and tired to add it and it says it was once added but back in 2013 and they said it wasn't ethanol free back then
Hmmm that probably also means it is still not ethanol free, either way, hope you issue resolves itself after driving a little perhaps or if you want, drain it and put in another tank of fuel.
You got any tips how to drain it? im thinking thats my best option.
Originally Posted by W205C43PFL
Hmmm that probably also means it is still not ethanol free, either way, hope you issue resolves itself after driving a little perhaps or if you want, drain it and put in another tank of fuel.
PFL205.064 with M276.823 (Oil pump solenoid defeated)
Originally Posted by StoozyVert
You got any tips how to drain it? im thinking thats my best option.
Sorry about this but I actually don't, as I do think our cars have a built in system that prevents thieves from extracting the fuel from the fuel tank as well so that doesn't help either. I am wondering if the gas station mess up the octane, I wonder if octane booster might help if that is the case but our cars are sophisticated and is able to retard timing to prevent knock so even with low octane it shouldn't be an issue.
Sorry about this but I actually don't, as I do think our cars have a built in system that prevents thieves from extracting the fuel from the fuel tank as well so that doesn't help either. I am wondering if the gas station mess up the octane, I wonder if octane booster might help if that is the case but our cars are sophisticated and is able to retard timing to prevent knock so even with low octane it shouldn't be an issue.
I just put heet and octane booster in the tank and i have been running it for at least 10 mins and its not getting any better i am gonna have to find out how to drain the tank bc idk what else i could do
PFL205.064 with M276.823 (Oil pump solenoid defeated)
Originally Posted by StoozyVert
I just put heet and octane booster in the tank and i have been running it for at least 10 mins and its not getting any better i am gonna have to find out how to drain the tank bc idk what else i could do
Hey brother I just did my 50k service changed spark plugs and air filters. My check engine light just turned on because my purge valve is miss firing. That seemed to fix it for now.
Hey brother I just did my 50k service changed spark plugs and air filters. My check engine light just turned on because my purge valve is miss firing. That seemed to fix it for now.
I think my new spark plugs should deliver sometime today and a new purge valve my air filters look amazing now so i will hold off on replacing them now.
PFL205.064 with M276.823 (Oil pump solenoid defeated)
Originally Posted by StoozyVert
I think my new spark plugs should deliver sometime today and a new purge valve my air filters look amazing now so i will hold off on replacing them now.
11-11-2023, 05:45 PM
