Running rich...First thing to check?
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Squid
Joined: Oct 2013
Posts: 48
From: Huntington Beach, CA
Running rich...First thing to check?
I believe my 98 Superhawk is running rich. When stopped, I smell exhaust and am getting miserable mpg (26-30). I know this bike is by no means a fuel sipper, but that mpg seems a little low. I'm not riding it very hard, either.
With that being said, what should I check first? The air filter? The carbs?
Thanks for your help!
With that being said, what should I check first? The air filter? The carbs?
Thanks for your help!
Senior Member
Superstock
Joined: Jul 2013
Posts: 458
From: Rome, GA
I believe my 98 Superhawk is running rich. When stopped, I smell exhaust and am getting miserable mpg (26-30). I know this bike is by no means a fuel sipper, but that mpg seems a little low. I'm not riding it very hard, either.
With that being said, what should I check first? The air filter? The carbs?
Thanks for your help!
With that being said, what should I check first? The air filter? The carbs?
Thanks for your help!
If its flooding and didn't used to the first things I would check would be is your air filter obstructed/excessively dirty? if the engine cant suck air it will suck extra fuel through the jets.
I'd also check to see if maybe your float needles have gone bad and the fuel flow to the carbs doesn't shut off properly when they are full, this could cause extra raw fuel to dump in the cylinders.
Also check and make sure that the choke isn't hanging open due to a broken or sticky cable going to one of the carbs.
Those would be my first checks anyway
Senior Member
SuperBike
Joined: Aug 2005
Posts: 1,864
From: Fort Wayne, IN
You should check the pilot jets. They control most of the fuel economy and I've often found people go with larger than stock when #45 (stock) is ideal for most applications, even with pipes. Try backing off the slide needle to a richer position too. This all assumes a jet kit is in there - that's about the only reason you would be running rich like that. If it is 100% stock then you have another problem all together.
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