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HELP! CAR SPUTTERING AFTER PUTTING OCTANE BOOSTER Sign up here! Search this forum this category all forums for All words Any words Whole Phrase (search options) Auto Repair Home>> Automotive Repair>> Car Troubleshooting Amir Anonymous Poster atavasoly14@yahoo.com Jul 8, 2008, 10:28 AM Post #1 of 4 (3873 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 Jul 9, 2008, 4:22 AM Post #2 of 4 (3856 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 (3851 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 Jul 10, 2008, 6:09 AM Post #4 of 4 (3846 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   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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