Fuel injectors
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Road Warrior
Joined: Feb 2017
Posts: 1,268
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From: farmington michigan
Fuel injectors
Was first thinking “bad gas” posted earlier now after reading some other posts I’m thinking about changing mi injectors just beachside. 2010 ultra 103 any recommendations? I’ve been looking and not sure if I need a 4.9 or a 5.3 any advice would be appreciated
Club Member
Joined: Apr 2013
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From: Utah
Seasoned HDF Member
Joined: Sep 2008
Posts: 14,072
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From: San Diego, CA
But to answer your question, the OEM injectors for your bike should be #27609-01B and are 4.3s (double check before you buy any). In any case, you want to replace the injectors with the same size that is in their now... If you change the injectors, from what is listed in your tune, without retuning for the new injectors, you can (probably will) cause damage to the engine...
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Road Warrior
Joined: Feb 2017
Posts: 1,268
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From: farmington michigan
I’m not 100% sure that it was just carbon build up or bad gas fuel injector cleaner got me back home and after about 30 miles with the cleaner in there it was running better. The last year or so it’s just run ok not great so thinking change them and see what happens. I will use the stock 4.3 when I do them
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Road Master
Joined: Nov 2018
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From: Upstate NY
Bad (varnished) gas is very uncommon nowadays. Water and debris contamination is mush more prevalent. If the injector cleaner worked, you may want to try some fuel treatment products like stabil. Not only does it treat your gas but it keeps all the little passages clean. What exactly was the bike doing?
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Road Warrior
Joined: Feb 2017
Posts: 1,268
Likes: 221
From: farmington michigan
I couldn’t get it over 4000, no real power, I think it leaned out bad enough to run hot and I could smell something like hot oil on the left side of the motor. Used 3 gallons of gAs in 60 miles. Now my mileage has been running in the mid to low 30’s
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