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-   -   C11 and C12 in fuel check (https://classracer.com/classforum/showthread.php?t=81389)

Rsmith38 02-01-2022 09:27 AM
Re: C11 and C12 in fuel check
 
Failed twice at Epping Nationals. Had run out of C-10 and used track sunoco. Brought 5 Gal can and it tested OK. Problem was fuel cell Foam. Removed it and no further problems. If you have foam in the cell it will hold the previous bad fuel!! No foam for ME!!!

dragracerray 02-01-2022 09:53 AM
Re: C11 and C12 in fuel check
 
Just a clarification. It must be a safety risk to run a fuel cell without foam.

You just can not get all the "failed" gas out of the foam when you dump the "bad" fuel so the "good" fuel is mixed with the "bad" fuel and you might fail again.

We finished that race without foam and replaced it for the next race.
Ray

garyc 02-01-2022 12:13 PM
Re: C11 and C12 in fuel check
 
First time running stock this year, what happens when you fail fuel check and when do they do it?

jamie2370 02-01-2022 12:59 PM
Re: C11 and C12 in fuel check
 
Fuel cell foam is not required. It is designed to slow down sloshing when braking or turning. Also you may find that "plastic" fuel cells will also cause a fuel to fail.

Hacksaw 02-01-2022 02:11 PM
Re: C11 and C12 in fuel check
 
Quote:
Originally Posted by garyc (Post 656630)
First time running stock this year, what happens when you fail fuel check and when do they do it?
They usually check first or second qualifier and any heads up race. Also could be random times. If you fail in qualifying, your run gets thrown out. If you fail in eliminations, you get bounced.

jmantle 02-15-2022 09:01 PM
Re: C11 and C12 in fuel check
 
Quote:
Originally Posted by Rory McNeil (Post 656185)
Don`t know how much heat, humidity, etc effects the sample, but I have had C12 from a 2 year old drum pass no problem, yet several years ago, I bought 10 gallons of C12 from the VP truck at Seattle, and the following weekend, at fuel check at Sonoma, the guy doing the testing, said that the fuel I had bought one week prior, was borderline. I have to think the drums of fuel taken to the National Events, should be pretty fresh. Go figure.
Every time I had my fuel checked (C11) at Sonoma they told me it was borderline but never had that issue at Vegas. I'm sure it was the same tech guys, maybe it was the altitude.


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