| Author |
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Buewulf
| | Posted on Monday, July 22, 2013 - 11:39 am: | 
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"I like the Uly but the thought has crossed my mind to push it off a cliff."
At least you live near a cliff, so you could make it look like an accident. I'd have to bury mine in a field somewhere to hide the evidence.
I read in another thread just now that someone had a problem with one of the pins in the fuel pump connector behind the subframe. May as well give it some scrutiny if you haven't already. |
Dave186
| | Posted on Monday, July 22, 2013 - 02:39 pm: |
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I even unhooked the battery when it happened. Checked the fuel pump connector but I will again with a closer look. It does dribble fuel if I fill it hot and then don't move but I'd gone 15 miles. Maybe it was just that damn hot.
New regulator will be here tomorrow. I rode it to work today and to lunch with no issues. |
Froggy
| | Posted on Monday, July 22, 2013 - 03:55 pm: |
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quote:I can't say I've heard of an instance of vapor lock being the cause of an issue for any bike anytime in recent memory.
Vapor lock is an issue on the Buells, that is partly why they never originally came with a large right side scoop, the original aftermarket ones could cause vapor lock due to forming a pocket of air between the cylinders. The stock right side scoop and then later right side scoop resolve this by directing air into between the cylinders. It is also an issue on the 1125R, they would have difficulty restarting when hot (after a short stop), they are programmed to keep the fuel rails primed for 10 minutes to make sure you have sufficient pressure for a restart. |
Red450
| | Posted on Monday, July 22, 2013 - 04:55 pm: |
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I've had the rough restart when hot during a short stop and I was curious if it was vaporized fuel in the line/injector. |
Buewulf
| | Posted on Monday, July 22, 2013 - 05:00 pm: |
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"Vapor lock is an issue on the Buells"
Do you think that is what is happening in Dave's case? It seems extremely unlikely he would get vapor in the rail unless it suddenly lost pressure. I could understand vapor lock preventing him from restarting the bike after something caused the engine to cut out, but I'd be surprised if it were his underlying problem. |
Steveford
| | Posted on Monday, July 22, 2013 - 06:02 pm: |
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Having just spent an hour stuck in traffic in 90 degree weather, it WILL run rough for a little bit when you turn the bike back on. My guess is Red450 nailed it.
It's got to be cooking in there after so much idling.
After about 20 seconds it went back to running normally.
Boy, Pennsylvania has bad drivers. A truck went over the side of a bridge on 83 South which must have killed him, 83 North was blocked with two cars that smashed together. |
Buellerxt
| | Posted on Monday, July 22, 2013 - 06:48 pm: |
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Okay guys, Froggy may be on the smaller side in stature, from what I've heard, but his head, I've got to help it get even bigger than it is! Froggy, you are the MAN!!!!! Where did you get all of this info on Buell's? Heck yes; I'm impressed, and you can bet many others are, AND appreciative and thankful. Please stay in the Buell world, Froggy. At the rate we're losing seasoned Buellers it is a concern. Stay with us, Froggy. You are well appreciated my Man!  |
Froggy
| | Posted on Monday, July 22, 2013 - 07:04 pm: |
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quote:I've had the rough restart when hot during a short stop and I was curious if it was vaporized fuel in the line/injector.
What may help is turning the key off and back on before starting, that way you make the pump prime again. I'm not sure if it will help all the way at the injector end if it is indeed a small case of vapor lock, but it may help.
quote:Do you think that is what is happening in Dave's case?
Honestly I doubt that is it (or at least is the main cause). It does sound pump related, the pressure regulator that he has on order might be the culprit.
quote:Where did you get all of this info on Buell's?
I just read too many posts on here. In fact, I have Badweb setup to email me every single post, so I try and keep up without actually browsing. |
Bikelit
| | Posted on Monday, July 22, 2013 - 08:33 pm: |
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Would like to rig up a pressure gauge I can watch while riding.
You can make a remote gauge with a 1125 fuel line.....
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Dave186
| | Posted on Monday, July 22, 2013 - 08:40 pm: |
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I dont think its vaporlock thats happening to me, mostly because of the way the pumps sound changes. I took a video of it with my phone, I will upload it to youtube. I have cycled the fuel pump a thousand times by now, doesnt do any good until it cools.
One thing that I was pondering and maybe the all knowing Froggy could explain is why does the fuel pressure regulator have a tube to send the bypassed fuel down to the pickup sock? seems to me that circulating the fuel around in the tank would be better since the upper portion is cooler. |
Froggy
| | Posted on Monday, July 22, 2013 - 08:57 pm: |
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I honestly can't explain that one. If I had to take a stab, it may have been something that got cut by bean counters to save 5 cents on every bike, especially if it something that works on 40k other XBs without issue. It could have been easily overlooked for the same reason. The fuel pump was changed a few times over the years, if it was something that was worth doing, they would have done it at some point. |
Buellerxt
| | Posted on Monday, July 22, 2013 - 09:24 pm: |
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Impressive retention and analysis, Froggy! : ) I'd like to meet you someday. In fact, I was just up in your area for a couple of weeks and NEVER thought of my Uly! lol We were on a baseball (Fenway, Cooperstown, Yankee Stadium), scenic (Finger Lakes, Niagara), and brewery (Omagong, Cooperstown, Naked Dove, etc.)tour. I love my Uly though and will be headed out for Sturgis, Colorado, and New Mexico soon. I sure hope I don't 'need' to post here while on the trip! : ) Sorry to get off topic but thanks again, Froggy. |
Dave186
| | Posted on Monday, July 22, 2013 - 09:28 pm: |
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I will probably leave it as is, since it doesnt seem to be a big deal. I measured the temp of the frame after my ride home today. 30 miles in 99 degree weather, tank was 128F when I pulled in the garage.
Here is the video I took yesterday when it was acting up, didnt have the temp gun with me then.
http://www.youtube.com/watch?v=Aq1o3OPVhl8 |
Natexlh1000
| | Posted on Monday, July 22, 2013 - 11:01 pm: |
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Woah. That sounds nasty.
My X1 sounds like that if I leave it alone for a long time. The difference being that my X1 does stop priming.
It sounds like yours doesn't get the "pressure good" signal for whatever reason.
I would try to macguyver a gauge like above if I were you. |
Dave186
| | Posted on Monday, July 22, 2013 - 11:27 pm: |
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It primes for 2 seconds like it should if I just turn the key. You see me at the beginning of the video using ECMspy to engage the pump.
Here is the video when it was cutting out.
http://youtu.be/d4_GEKPl6Vo |
Dave186
| | Posted on Wednesday, July 24, 2013 - 12:50 pm: |
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Replaced the FPR yesterday. Really don't think that's it everything looks fine. The replacement had a Chrysler pentastar on it haha.
I'm beginning to think its some sort of vapor lock within the tank. In an attempt to keep it cooler I took the header wrap and heat shield off the rear header. I am carrying my temp gun with me and need to go try and reproduce the problem. |
Dave186
| | Posted on Monday, August 05, 2013 - 12:34 pm: |
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Just did a 1245 mile trip with the Uly, it never missed a beat. Temps were much cooler, even had to use my heated grips a couple times. The last leg when I was getting close to home temps got back up into the mid 90s and I did get nervous it might quit me but it never did.
Maybe its fixed? |
Natexlh1000
| | Posted on Monday, August 05, 2013 - 05:56 pm: |
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Don't say that; you'll jynx it! |
Thesmaz
| | Posted on Monday, August 05, 2013 - 07:00 pm: |
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I had the same issue twice with heat this past weekend on a trip I went on. When the outside air temp got really hot it started acting up. Where to start or do I even want to start. I have a real love/hate relationship with this thing... Just about ready to find another home for this thing...
I guess I'll have a look at the wires to the fuel pump and then go from there... |
Dave186
| | Posted on Monday, August 05, 2013 - 07:40 pm: |
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I wish I could tell you what to do. It hasnt done it since I replaced the regulator so maybe thats it. Time will tell.
I did almost trade my Uly in on a KTM 990. |
Saltcityjeff
| | Posted on Thursday, August 15, 2013 - 05:18 pm: |
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Dave186 - what is the part number of the FPR? I am going to swap mine out. |
Dave186
| | Posted on Thursday, August 15, 2013 - 09:14 pm: |
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I will have to look at the package when I get home but I doubt it's your problem.
Mine just did it again. It 101 degrees right now and I let the bike heat soak in a parking lot after a hard blast down the freeway. It has to be 100 degrees to do it and after a hard ride. At this point I don't think it's fixable. I even switched fuel maps to try and get it running cooler.
That 990 is looking better and better. |
Uly_man
| | Posted on Saturday, August 17, 2013 - 09:25 pm: |
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Yes on the first video you can hear the fuel pump "re-priming" with the engine off. That is either a split pump housing, which lets pressure bleed back into the tank, or a failed fuel bar meter which does the same.
The easy test for either of these is to fit a pressure gauge on the fuel line before the injectors. |
Dave186
| | Posted on Sunday, August 18, 2013 - 10:07 pm: |
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The pump has been changed twice already with no change and the fuel pressure regulator also. I think thats what you mean by fuel bar meter?
Yesterday I switched the pump again, this time for an Airtex cheapo from Autozone. Part number is E7012, its not near as loud as the Carter unit I had tried previously but is a little bit louder than the Walbro. I havent had a chance to try it yet other than it starts and runs in the garage.
Sorry I forgot to post this earlier, the FPR I used was a BWD part number 22857.
Both the pump and FPR are for a Chrysler application. |
Saltcityjeff
| | Posted on Thursday, September 12, 2013 - 01:07 pm: |
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I am curious if anyone experiencing this issue is using anything other than their factory ECM on the bike? I wonder if this is a heat/soldier issue in the ECM. Unfortunately the temps have tapered off here in Utah and I have not had any issues because of this and troubleshooting further issues will have to wait until next summer. |
Dave186
| | Posted on Thursday, September 12, 2013 - 08:24 pm: |
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I pretty much ruled that out with a jumper wire when I was testing. The pump always has power, the ECM just grounds it. I made my own ground with no change.
I came up with a theory but dont have any real data to back it up. Walbro mentions in their literature that some pumps have a over pressure relief valve. I think when the tank gets hot enough and boils it is raising the pressure and causing this to open. Only thing I can come up with.
I still have the cheap Airtex pump in my bike and its working fine, but like you mentioned its starting to cool off and we arent likely to have any more 100 degree days this year. |
