Update: Weird Noise - Could it be octane knock???
Thread Starter
|
Cruiser
Joined: Mar 2010
Posts: 184
Likes: 1
Update: Weird Noise - Could it be octane knock???
It was the crapola BP gas that got me. I usually buy my gas locally at a Phillips 66 station and never had problems. I ran low on gas while out of town and got a tank full of BP Premium (Premium crap they must have sucked off the top of the gulf). Anyway, I stopped at Autozone and got some octane booster, then to P66 and filled it up with their premium. I still had over a quarter tank of crap BP gas in it. I drove it mellow for about a half hour and then started getting on it again. The ping is 99% gone. If I really listen for it and crack it hard I think I can hear a slight ping, but I still have whats left of the crap gas in there. Once I run this tank empty and fill up again it should be as good as new.
I hate it when I think my bike has something wrong with it!!!!!
I hate it when I think my bike has something wrong with it!!!!!
Road Warrior
Joined: Sep 2008
Posts: 1,620
Likes: 0
From: Irvine, Orange County, Ca
I'd have to agree that if you put in premium which was at least 91 octane, then you probably just got a bad batch or it had been there too long. It's the 85 octane you have to use when you take a ride through the dessert towns that gets you. I always keep a small bottle of octane booster with me now. Saved my bike a couple of times already. Glad to hear you fixed it and it wasn't a big deal. Now go empty the tank again!
Thread Starter
|
Cruiser
Joined: Mar 2010
Posts: 184
Likes: 1
Thankjs for all the advice guys. I did get a bottle of octane boost and since they are made for car gas tanks I only poured about a quarter of the bottle in and I am keeping the rest in my swingarm bag in case this happens again. I'm surprised I got bad gas at this BP station as it is in the Quad Cities and on a busy street. They should be selling plenty of premium.
Tourer
Joined: Sep 2008
Posts: 259
Likes: 1
From: Kansas City, MO
Consider your tune. It doesnt seem you have any extensive motor work. Air fuel ratio good? Stock cams don't like any advance at all. I had no issues running lower grade gas with my previous stage one. 100* 87 only for 3 fill ups.
Road Warrior
Joined: Jul 2007
Posts: 1,308
Likes: 2
From: WA - The State
Wherever you buy, it is always best to try to use a station that has turnover, though.
Trending Topics
Tourer
Joined: Jun 2007
Posts: 436
Likes: 0
From: Bartow, Fl.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider
Verdad Gallardo
Thread
Thread Starter
Forum
Replies
Last Post
