Problems with my EVO
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Novice
Joined: Apr 2015
Posts: 19
Likes: 0
From: CT
Problems with my EVO
I picked up my 90 EVO about a month ago, put like 300 or so miles on it, no problems. Its all stock, except S&S tear drop aircleaner, and drag pipes.
I went to start her up the other day, a day after I road quite a bit with no issues, and it fired right up like usual but it died on choke. Got it warmed up and it kept dying on me. Would fire right back up, and randomly cut out, no sputter just like hitting the killswitch while riding. Tried to mess with it yesterday, bike would only idle on choke while I held it up right, if on the kickstand it wouldnt. No choke wouldnt run. I drained the gas (looked yellow and nasty figured that may be it) Put in fresh gas, nothing. Cleaned out the carb today top to bottom, bike fires up and will purr at idle, but as soon as I touch the throttle it dies. Will fire back up and idle. I can get it to rev out sometimes and it feels strong but it backfires quite a bit.
My guess is the VOES switch could be bad? Sounds like it could be a timing issue, because I know the carb is clean now. Going to get plugs tomorrow even though I highly doubt thats the issue....
What else do you guys think this could be? Battery reads full voltage (not a harley/yuasa etc.. knockoff battery but seems to work and be fine)
I went to start her up the other day, a day after I road quite a bit with no issues, and it fired right up like usual but it died on choke. Got it warmed up and it kept dying on me. Would fire right back up, and randomly cut out, no sputter just like hitting the killswitch while riding. Tried to mess with it yesterday, bike would only idle on choke while I held it up right, if on the kickstand it wouldnt. No choke wouldnt run. I drained the gas (looked yellow and nasty figured that may be it) Put in fresh gas, nothing. Cleaned out the carb today top to bottom, bike fires up and will purr at idle, but as soon as I touch the throttle it dies. Will fire back up and idle. I can get it to rev out sometimes and it feels strong but it backfires quite a bit.
My guess is the VOES switch could be bad? Sounds like it could be a timing issue, because I know the carb is clean now. Going to get plugs tomorrow even though I highly doubt thats the issue....
What else do you guys think this could be? Battery reads full voltage (not a harley/yuasa etc.. knockoff battery but seems to work and be fine)
Tourer
Joined: Mar 2015
Posts: 345
Likes: 3
From: New Jersey
Did you take the carb apart??. My buddy had a similar problem when he rebuilt his carb. There was a needle he put in backwards or upside down. Can't remember. At idle it was fine. We took off the air cleaner. looked inside the carb, and noticed when giving throttle the carb stop delivering fuel and bike cut off. He sent the carb out to someone and got it rebuilt. The guy told him what it was. It's been fine ever since. I will try to get ahold of him and ask. Maybe it will help you.
Last edited by 97 dyna lowrider; Apr 23, 2015 at 06:32 PM.
Road Warrior
Joined: Sep 2006
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Seasoned HDF Member
Joined: Oct 2005
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From: Santa Klaus County, Cali
Pull the the petcock and clean the filter screen. Someone mentioned low speed jet clogged... yeah that as well as float level. Stock carb or aftermarket?
Some are in the habit of adding an unneeded (IMO anyway) additional fuel filter between the hose that feeds the carb. If that goes south you will get the problem you described.
Some are in the habit of adding an unneeded (IMO anyway) additional fuel filter between the hose that feeds the carb. If that goes south you will get the problem you described.
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Road Master
Joined: Nov 2013
Posts: 1,216
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From: Buford, GA
Also if you pulled the emulsion tube to clean it and also pulled the needle jet, double check that you put the needle jet in right or it will not run right.
http://www.cv-performance.com/harley...tuning-issues/
http://www.cv-performance.com/harley...tuning-issues/