Interemitent hessitation
Thread Starter
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Road Warrior
Joined: Apr 2007
Posts: 1,952
Likes: 15
From: Senoia, Ga., by way of Miami, Fl..
I was thinking it was the petcock.
I think I'll pull the carb tonight and take a fuel sample while I'm at it.
Ignition system is stock. I might wire up a tach and watch it. I hadn't thought about that..
I think I'll pull the carb tonight and take a fuel sample while I'm at it.
Ignition system is stock. I might wire up a tach and watch it. I hadn't thought about that..
Thread Starter
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Road Warrior
Joined: Apr 2007
Posts: 1,952
Likes: 15
From: Senoia, Ga., by way of Miami, Fl..
OK, I stopped by my indy to pick up some pushrods so I could install my new lifters and talked to him about my problem. He agree'd with the "sounds like fuel" idea and we got to talking a bit further and he told me that since we've had E10 forced down our throats, he's had alot of carb issues. Makes perfect sense, not sure if its my problem, but I decided to take the carb appart and take a look anyhow. Looks pretty good, I changed the intake gaskets while I was in there. The gaskets looked like they were sealing, but the right side bolts were a bit loose. Dont belive I've found anything yet, but I'll run it again when I get it back together and go from there. I plan to richen it up a bit too..
I'll keep you posted. Thanks for the help.
I'll keep you posted. Thanks for the help.
Tourer
Joined: Nov 2007
Posts: 448
Likes: 3
From:
- hi HGM.
- absolutely hate intermittent type faults , as they're the most
difficult to track down.
- would recommend a systematic , one-step-at-one-time 'program'
to try to track it down. Going by guesswork (even if its educated
guess work) will be very time consuming and worse , frustrating.
- since you're familiar with mechanical things , then maybe start with fuel,
then move onto the electrics.
.
- just to throw one in for you , I had a slow degradation of the electrics on
my bike which was eventually traced to (1) degrading grounding and (2)
the main 40amp circuit breaker developing an ever greater resistance.
- redid the grounding and also replaced the breaker with a fuse , and the
bike is all good again.
.
- if your hesitation only occurs when the bike is warmed up , would suspect
an electrical fault and not a fuelling fault.
.
- absolutely hate intermittent type faults , as they're the most
difficult to track down.
- would recommend a systematic , one-step-at-one-time 'program'
to try to track it down. Going by guesswork (even if its educated
guess work) will be very time consuming and worse , frustrating.
- since you're familiar with mechanical things , then maybe start with fuel,
then move onto the electrics.
.
- just to throw one in for you , I had a slow degradation of the electrics on
my bike which was eventually traced to (1) degrading grounding and (2)
the main 40amp circuit breaker developing an ever greater resistance.
- redid the grounding and also replaced the breaker with a fuse , and the
bike is all good again.
.
- if your hesitation only occurs when the bike is warmed up , would suspect
an electrical fault and not a fuelling fault.
.
Thread Starter
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Road Warrior
Joined: Apr 2007
Posts: 1,952
Likes: 15
From: Senoia, Ga., by way of Miami, Fl..
Thanks Pistole,
Thats pretty much the plan. I'd hate to replace a dozen things and not know what fixed it. My thought process right now started with the heat related expansion and contraction around the intake. I appreciate the info on the CB. I've been a bit concerned about one in particular. They arent loose, but one post seems to move a bit when wiggling the wire. If its not fixed when I get it back together, I'll go that route. I had one more guy at the indy mention plug wires too, making 2 votes for them.. So, that may be step 3.. Worst case, I'm getting pretty familliar with the bike..
Thats pretty much the plan. I'd hate to replace a dozen things and not know what fixed it. My thought process right now started with the heat related expansion and contraction around the intake. I appreciate the info on the CB. I've been a bit concerned about one in particular. They arent loose, but one post seems to move a bit when wiggling the wire. If its not fixed when I get it back together, I'll go that route. I had one more guy at the indy mention plug wires too, making 2 votes for them.. So, that may be step 3.. Worst case, I'm getting pretty familliar with the bike..
Cruiser
Joined: Sep 2005
Posts: 130
Likes: 2
From: NH
I'd check the timing sensor too. I had a similar problem a few weeks ago, thought it was fuel and it was the sensor. As the bike heats up, they can warp over time and cause issues with ignition and feel like "bad gasoline" syndrome. The wrench said it's not very common but can happen.
He suggested to me (if it ever happens again) to remove timing cover, letting air cool the timing cone area while riding. If that eliminates symptoms, you have located your problem.
He suggested to me (if it ever happens again) to remove timing cover, letting air cool the timing cone area while riding. If that eliminates symptoms, you have located your problem.
Elite HDF Member
Joined: Mar 2006
Posts: 3,673
Likes: 606
From:
i just went through something like this with my 85 evo bagger. i replaced the main breaker, it didn't help. i replaced the 3 other breakers and this cured the problem. they were 15 amp and they were for the lights, ignition and the accessories. there were 3 seperate circuits. if you have a wiring diagram look there to see if you have these. they were $8 each at a nappa auto parts store.
HDF Community Team
Joined: Dec 2005
Posts: 5,378
Likes: 2,574
From: NC USA
If you have a breaker with a loose post, replace it regardless, even if you have it running great by now. It will certainly cause problems down the road.
good luck
good luck
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Cruiser
Joined: Aug 2008
Posts: 113
Likes: 0
From: Tenn
I find this topic interesting since I've had a couple people email me requesting that I share what I find because they are having the same issue as us.
Why are we all having simular issues at the same time ?
This is the link to my problem which sounds a lot like your, but I have a EFI.
https://www.hdforums.com/forum/evo/274902-fuel-problem-efi-evo.html
Saturday the bike ran great for about an hour and then it began with the missing and choking and coughing and missing...
Why are we all having simular issues at the same time ?
This is the link to my problem which sounds a lot like your, but I have a EFI.
https://www.hdforums.com/forum/evo/274902-fuel-problem-efi-evo.html
Saturday the bike ran great for about an hour and then it began with the missing and choking and coughing and missing...
Thread Starter
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Road Warrior
Joined: Apr 2007
Posts: 1,952
Likes: 15
From: Senoia, Ga., by way of Miami, Fl..
Well, I lifted the needle .040" and backed the low speed jet out 1/4 turn. The bike ran great after I finished. I rode it to work this morning, again, GREAT! Then, this afternoon, about 5mi from work, it spit and sputtered. It continued on and off throughout the whole ride, but nowhere near as bad as before. I tried pulling the choke out, but it didnt seem to matter, although it was really intermitent today...
Now, on the way home I needed fuel. So, when I found a gas station that had gas, thats a different story, that really pisses me off(seeing people fill all the 5gal jugs they can fit in their trucks)... But, back on track. I opened the tank and found a flake of sealer, or something in the neck. I'm now convinced this is fuel related. The alcohol can delaminate the tank, problems that have been seen in the automotive area for years. The bike has continued to be reliable, though runs spurratic, so I plan to try it again tomorrow with the fresh batch of fuel in the talk. If it doesnt get better, I plan to drain and rince the tank and clean the petcock screen..
Thanks for the help guys. 96 Ultra, it sounds awfully similar to mine. Having an injected bike, may make the reaction a bit different for you though. Maybe a fuel sample will show you something.
Now, on the way home I needed fuel. So, when I found a gas station that had gas, thats a different story, that really pisses me off(seeing people fill all the 5gal jugs they can fit in their trucks)... But, back on track. I opened the tank and found a flake of sealer, or something in the neck. I'm now convinced this is fuel related. The alcohol can delaminate the tank, problems that have been seen in the automotive area for years. The bike has continued to be reliable, though runs spurratic, so I plan to try it again tomorrow with the fresh batch of fuel in the talk. If it doesnt get better, I plan to drain and rince the tank and clean the petcock screen..
Thanks for the help guys. 96 Ultra, it sounds awfully similar to mine. Having an injected bike, may make the reaction a bit different for you though. Maybe a fuel sample will show you something.