Main IndexAuto Repair Home Search Posts SEARCH
POSTS
Who's Online WHO'S
ONLINE
Log in LOG
IN









HELP! CAR SPUTTERING AFTER PUTTING OCTANE BOOSTER


Search for (search options)
 



Amir
Anonymous Poster
atavasoly14@yahoo.com

Jul 8, 2008, 10:28 AM

Post #1 of 4 (3870 views)
HELP! CAR SPUTTERING AFTER PUTTING OCTANE BOOSTER Sign In

 foolishly put a bottle of octance booster into my gas tank when it only had a quarter tank of gas in it. After driving for about 20 miles or so, the car started to sputter when pushing on the gas and when I come to a stop shakes alots. I immediately filled up the gas tank and have drove it around for about 5 to 10 miles. I'm curious if continue to drive will the additive be flushed out and the car will return to normal or is it something more serious.

Thank you


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Jul 9, 2008, 4:22 AM

Post #2 of 4 (3853 views)
Re: HELP! CAR SPUTTERING AFTER PUTTING OCTANE BOOSTER Sign In

By itself the additive probably didn't do this but perhaps sped up the inevitable. Check spark plugs for probably one that looks different from the others for now and go from there,

T



carjunky
Enthusiast

Jul 9, 2008, 12:07 PM

Post #3 of 4 (3848 views)
Re: HELP! CAR SPUTTERING AFTER PUTTING OCTANE BOOSTER Sign In

Tom, It could be possible that with the octane boost he put his car over the octane level that it should run at and its causing the car to mis-fire or fire to quickly before the piston reaches the the top, causing a back-firing effect right?

I think filling the gas tank was a good idea and this will dilute the octane. If it doesn't clear up I would definitely quick out what tom pointed out to.


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Jul 10, 2008, 6:09 AM

Post #4 of 4 (3843 views)
Re: HELP! CAR SPUTTERING AFTER PUTTING OCTANE BOOSTER Sign In

Yes - It could have made the fuel behave like higher octane fuel just as LEAD did back when that was used. Using higher octane (within reason) does't benefit an engine not designed to take advantage of it but I never noted one running poorly because of it. The "old school" thoughts were that it was a better fuel quality not just the anti-knock rating and I do believe that.

Side note: Back when leaded vs unleaded was the rule of the day the question was WHY the heck does unleaded at 87 octane cost more 10%! over 89 octane "regular leaded" and the reason is you need a higher percentage of crude oil to make higher octane without using the then cheap lead - Google TetraEthyl Lead for info and lies on it too.

Perhaps what happened is something in the additive or just chance coincidence fouled up a plug that was close to doing that anyway. I no longer own a vehicle that requires higher octane fuel but certainly did over the decades. Higher compression was the reason for needing higher octane and that was a primary way to increase HP. You could fiddle with timing and maximize HP based on available octane a bit. Today's cars use "knock" sensers so it's really not going to help much if at all.

Unprooven by me but I don't think there's a lot of benefit or harm in those octane booster additives....

T







 
 
 






Search for (options) Privacy Sitemap