Question...Possibly A/F related but could also be old gas.

[fstlane88]

I was out driving my car today, the first time it's been driven in ~2 months, and under full load WOT I noticed it would start popping, as if it were going into knock. A/F is really rich ~10.4:1, so could this be it's so rich it's blowing out the spark.... or is it just due to really old gas?

Reason it is rich is I installed 550's during the swap....

TIA, for any help, or advice...

~Bryan.

P.S. Merry Christams everyone!!

 

[psifactor]

old gas will not happen in 2 months.

And ya if you haven't changed your spark plugs lately it may be a good idea. Do you have anything to lean it up slightly?

 

[itr206]

Ive had gas sit in my car for close to a year and the car ran fine on it.

 

[psifactor]

Depending on the conditions a year is a bit long.

I think its normally 5-6 months and after that its time for some new gas.

 

[fstlane88]

Bringing back an old thread I know but I'm thinking it may be something else. Could the car running off the battery, cause there to be a drop voltage in the system enough, that it would not light some of the plugs? Or light them just slightly, not enough so that mixture would burn?

 

[Supracentral]

Bringing back an old thread I know but I'm thinking it may be something else. Could the car running off the battery, cause there to be a drop voltage in the system enough, that it would not light some of the plugs? Or light them just slightly, not enough so that mixture would burn?

Yes, definately - battery won't produce enough juice to spark properly at higher RPM ranges.