Help please!!!!
Big Kahuna HDF Member
Joined: Mar 2007
Posts: 29,598
Likes: 19
From: Oregon
RE: Help please!!!!
OK guys, a lot of great ideas there, but I have a question.
The bike, according to the first post, didn't start missing until 120 miles.
Not when it warmed up, but after it had time to foul the plugs.
If I read this right, it did fine for120 miles and only then showed a problem.
The plugs were fouled with soot. Not oily soot he says, but a dry soot. That sounds like rich mixture rather than oil burn, maybe?
I think it's carb related. I think it's too rich. It could be an enricher problem (cable maladjusted and it's on even though pushed in) or some other weird deal, but I vote for too rich a mixture, for whatever reason it may be.
???
The bike, according to the first post, didn't start missing until 120 miles.
Not when it warmed up, but after it had time to foul the plugs.
If I read this right, it did fine for120 miles and only then showed a problem.
The plugs were fouled with soot. Not oily soot he says, but a dry soot. That sounds like rich mixture rather than oil burn, maybe?
I think it's carb related. I think it's too rich. It could be an enricher problem (cable maladjusted and it's on even though pushed in) or some other weird deal, but I vote for too rich a mixture, for whatever reason it may be.
???
Big Kahuna HDF Member
Joined: Mar 2007
Posts: 29,598
Likes: 19
From: Oregon
RE: Help please!!!!
ORIGINAL: kiwidave2
good call there.
bad module or coil..
You are getting 30 miles or so because in that time the offending part warms up enough to break down.
Apply a hairdryer in the garage to each item with motor running and wait for it to stumble.......
good call there.
bad module or coil..
You are getting 30 miles or so because in that time the offending part warms up enough to break down.
Apply a hairdryer in the garage to each item with motor running and wait for it to stumble.......
Thread Starter
|
Cruiser
Joined: Aug 2007
Posts: 131
Likes: 0
From:
RE: Help please!!!!
JBaker thank you very much. after I read what you posted I decided to check enricher before trying to adjust air fuel mixture, after closer exam I found a burr on the shaft behind the **** that was holding it out just slightly. I filed it smooth and changed out the plugs again, this time thou I used champion rn12yc instead of the Harley plugs, Rode about 100 miles and no more miss. Jury is still out but I am very hopefull that this was the problem, and it wont reapear later. again thanks for all the replies. Lee
Big Kahuna HDF Member
Joined: Mar 2007
Posts: 29,598
Likes: 19
From: Oregon
RE: Help please!!!!
ORIGINAL: leel
JBaker thank you very much. after I read what you posted I decided to check enricher before trying to adjust air fuel mixture, after closer exam I found a burr on the shaft behind the **** that was holding it out just slightly. I filed it smooth and changed out the plugs again, this time thou I used champion rn12yc instead of the Harley plugs, Rode about 100 miles and no more miss. Jury is still out but I am very hopefull that this was the problem, and it wont reapear later. again thanks for all the replies. Lee
JBaker thank you very much. after I read what you posted I decided to check enricher before trying to adjust air fuel mixture, after closer exam I found a burr on the shaft behind the **** that was holding it out just slightly. I filed it smooth and changed out the plugs again, this time thou I used champion rn12yc instead of the Harley plugs, Rode about 100 miles and no more miss. Jury is still out but I am very hopefull that this was the problem, and it wont reapear later. again thanks for all the replies. Lee
JB
Thread Starter
|
Cruiser
Joined: Aug 2007
Posts: 131
Likes: 0
From:
RE: Help please!!!!
Well that wasn't it rode another 40 or so miles today most of it in town fairly slow speeds, and motor started missing again. got home and pulled the plugs black soot covering them up. I am certian this is a carb related problem a/f mixture or maybe a bad jet? How should I go about setting the air fuel mixture on the cv carb? I guess I am asking if I should just turn it closed say a 1/4 turn to lean it out a little and see what happens or should I go closed all the way and say open 3 turns and check preformance. Total newbie here and I really don't want to mess the motor up. And with that said would you suggest I just bite the bullet and take it to the shop. Thanks Lee
Elite HDF Member
Joined: Oct 2005
Posts: 3,872
Likes: 83
From: Canton, Michigan
RE: Help please!!!!
Yeah, you can 'mess' with it and perhaps get it to run right. Or you can spend the $$$ take it to a shop that has a dyno and someone that knows how to use it to tune the CV carb. It might be something simple, or it could take a couple hours to get it to run right.
Best money I ever spent was to have my 93 EVO tuned (took 4 hours to re-do the fawked carb) on a dyno.
Best money I ever spent was to have my 93 EVO tuned (took 4 hours to re-do the fawked carb) on a dyno.
Big Kahuna HDF Member
Joined: Mar 2007
Posts: 29,598
Likes: 19
From: Oregon
RE: Help please!!!!
I like to have mine dyno tuned but it does cost. You may have something as simple as dirt in the float seat or something similar that's allowing the carb to "flood."
Is it hard to start when it's hot? Seems like it might be if it's getting too much fuel.
I suppose you could take the carb apart and clean it really well. You could check the float adjustment and so on. It could be something simple. An older bike with low miles can get the carb crudded up...
Thread Starter
|
Cruiser
Joined: Aug 2007
Posts: 131
Likes: 0
From:
RE: Help please!!!!
Actually it starts fairly easy when warmed up, I am going to take it to a bike shop here in town that works on nothing but Harleys, talking to several other guys here they are really good at tweaking evo's. I'll let ya'll know what happens. Lee
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 Starter
|
Cruiser
Joined: Aug 2007
Posts: 131
Likes: 0
From:
RE: Help please!!!!
Took my bike to the shop today they put it on the dyno wound up replacing the jets and the manifold gaskets, she was purrin like a kitten when they got through. rode around 120 miles after they got through and everything seems to be fine. Gotta say so far this has been the best money spent so far. lots more power, way better acceleration, thanks for all the suggestions, Later Lee
Thread
Thread Starter
Forum
Replies
Last Post