Riders Of Vision

General => TechTalk => Topic started by: TixonPB on October 25, 2009, 07:28:06 PM

Title: Help?
Post by: TixonPB on October 25, 2009, 07:28:06 PM
Alright. The bike has been running fine for about 2 weeks now. Everything was going fine so i went on a ride with some family and friends (about 5 of us). About 2 1/2 hours into the ride, she was running fine when we got to a stop sign and i got left and had to wait for a car to go by. Well, by the time i got past the stop sign, I had to catch up with the group, so I took her up to about 8,000 rpm through all the gears till i caught up. Well after i caught up, the bike started to act like it was out of gas, so i flipped to reserve. as soon as we got the next stop sign, she died and we could get her started. when we fiddled around with the fuel line, she started but wouldn't stay running and started dumping gas on the side of the road. so i rode back to my house with my cousin and we went back and picked her up. I know the bike had a in-line filter for a while but it was a straight-thru that caused the fuel line to kink, so i took it off and havent gotten a new one on yet. Any ideas whats going on?
Title: Re: Help?
Post by: Kojo on October 25, 2009, 09:18:46 PM
It sounds like the sudden jump in RPMs might have worked loose a bit of dirt or rust from the inside of the tank (A little is all it takes) and might have gotten caught in the carbs. It's very similar to the symptoms my bike had before I did some carb work. That's my guess.
Title: Re: Help?
Post by: Extent on October 27, 2009, 03:27:12 AM
Where was the gas draining out from? It does sound like what happened to me when I put in an inline filter and managed to kink the fuel line, but you've already dealt with that.

Could debris from the tank stick the floats open?
Title: Re: Help?
Post by: Kojo on October 27, 2009, 03:35:40 AM
If it was from the overflows and it was flooding everything out it may be a float valve adjustment in order.
Title: Re: Help?
Post by: Tiger on October 27, 2009, 07:49:33 AM
 :) Removing and not replacing the in-line fuel filter wasn't a good idea...However, whats done is done...but get a new one fitted a.s.a.p.

A couple of things to try:

1 - Give the float bowls a couple of decent taps as the float(s) may just be stuck... :-\

2 - Remove the top of the carbs (with the bodies still in situ). Carefully remove the float and float needle and flush through with carb cleaner, repeat with the other carb and rebuild.
Clean out the float bowls and replace the carb tops.
With a new in-line filter fitted, put the petcock to prime, wait a few minutes and go through your normal starting procedure... ;)

Let us know the results... :-\

                   
8).......TIGER....... 8)
Title: Re: Help?
Post by: Extent on October 29, 2009, 05:08:15 AM
you also can use a straight through fuel filter, you just need to make a longer loop of fuel line to keep it from kinking, so if your old filter is still in good shape you can just get some new fuel line and call it a day on that end.
Title: Re: Help?
Post by: TixonPB on November 05, 2009, 01:26:56 PM
Alrighty. I finally got to mess with the bike again today. First things first. I went out to start the bike and it idled for about 30 seconds and then went crazy and lost power.But it did NOT dump gas. I took off the tank and airbox and started the bike without the tank or airbox on so i could spray carb cleaner (it says on the carb cleaner not to spray without bike running). The bike ran fine! no hesitation at all. I sprayed the cleaner, then put the airbox back on. Started it again and it still ran fine. As soon as i hooked up the gas tank and gas lines, it ran for another 30 seconds and then went sporadic. It would only run as long as i kept the throttle twisted, if i let off, it would die, but still no dumping gas. I really have no idea what part of the carb is the float bowls. I regret to say that I am not familiar with carbs at all :( and have no idea what part of the carb is what. Pictures would be a great help. :)


EDIT: I did put an in-line filter in. Picked one up from autozone.
Title: Re: Help?
Post by: Brian Moffet on November 05, 2009, 01:41:25 PM
Try running it without the tank cap on.
Title: Re: Help?
Post by: TixonPB on November 05, 2009, 02:01:44 PM
I tried that. Still didnt want to run.
Title: Re: Help?
Post by: don_vanecek on November 05, 2009, 05:52:57 PM
This also sounds like a vacuum leak somewhere-check and see if everything is connected and plugged. Even just forgetting to plug the fuel pump line back in will make the bike run like crap.
Title: Re: Help?
Post by: Brian Moffet on November 05, 2009, 07:27:12 PM
Actually, the 30 seconds sounds like the petcock is not letting fuel past?  Try putting it on prime and make sure that fuel is flowing?  Since it works without the tank, the problem seems like it would be in the tank systems, vacuum to the petcock, fuel line from the petcock, the petcock itself, the gas cap, etc...
Title: Re: Help?
Post by: TixonPB on November 05, 2009, 11:15:37 PM
Fuel flows through the petcock fine. That's why I'm stumped. I also checked to make sure that th main fuel line isn't stopped up a d it isn't.
Title: Re: Help?
Post by: akvision on November 06, 2009, 12:51:14 PM
Pull the carb and disassemble carefully and in an orderly way.  Take pictures along the way. 
I would bet it is plugged and just needs a going through... Lucky has a CD with full instruction.
It is really not all that bad.  It will never self correct.  Just do it.  There is lots of help on this site.
Don't be in a hurry, and take time.
Title: Re: Help?
Post by: vadasz1 on November 06, 2009, 01:39:21 PM
Open the gas cap and see if that fixes it.  If so then get a new cap or replace the seal in the old one.

Just guessing.
Title: Re: Help?
Post by: YellowJacket! on November 09, 2009, 08:49:28 PM
I had the same problem this summer.  One of the guys...QBS maybe...suggested removing the carb drain screws, draining the gas and shooting some carb cleaner spray in the bowls.  I did it and it worked.  I think I had something stick one of my floats and YJ ran like crap and leaked gas all over the place.  Alls well now since doing that.

David
Title: Re: Help?
Post by: TixonPB on November 10, 2009, 03:38:46 AM
I can try that if I knew what part was what part. I am not familiar with carbs so i'm feeling kinda helpless. I like your idea David, but i don't know what part of the carb is what. Is there any chance I could beg for some kind of pictures? That way i can give it a shot without have to take the carbs out because from the top down, there is no sign of dirt or gunk anywhere in the carbs.
Title: Re: Help?
Post by: Tiger on November 10, 2009, 05:32:18 AM
 :) Looking at the carbs from the left side (as you sit on the Vision)...at the bottom left of each one, there is a hex' brass bolt head...see it...yep that's it ;)...remove and drain gas from each one. I use a piece of paper towel...this catches the gas but also shows up any crap that drained out... 8)

                 
8).......TIGER....... 8)
Title: Re: Help?
Post by: YellowJacket! on November 10, 2009, 10:01:11 AM
Those brass bolts are also the jet covers, so be careful of what comes out of them when you drain them.  That is how I did mine though.

David

Edit:
Heres the post I made earlier this year when it happened to me.  Some good pictures too:
http://ridersofvision.net/rovforum/index.php?topic=10641.0

David
Title: Re: Help?
Post by: TixonPB on November 11, 2009, 12:01:05 AM
Alrighty. I have so far sprayed carb cleaner thru the bowls and it has finally stopped spittin out gunk. And when I tap the side of the bowl, I hear a tinking jiggle onside, so I assume the floats are good. I'll let u guys know how it turns out as soon as I get it all back together.
Title: Re: Help?
Post by: TixonPB on November 11, 2009, 01:59:26 AM
Well, as far as I can tell, she's back to her normal self :)  I was able to start her up and she ran and idled better than before, but I only ran her for about 3 minutes, so the real test will be to see if she idles tomorrow and possibly can take her on a shakedown cruise around the block before I go to work. :) Thanks for the help everyone :)
Title: Re: Help?
Post by: TixonPB on November 15, 2009, 12:53:04 PM
Well fellas, the gremlins are thriving at my house. I took her out on a ride today and took her around the area a good 6 times to make sure she wasnt going to act up again. After that I headed in to town. About halfway there, she started running badly again, and It was like I lost fire on one of the cylinders. The tach and everything was working, so i figured it was the rear cylinder. Would faulty plug wires cause the rear cylinder to stop firing. I just replaced the plugs about 2 months ago, so I know they are still good.
Title: Re: Help?
Post by: Tiger on November 15, 2009, 02:48:03 PM
Quote from: TixonPB on November 15, 2009, 12:53:04 PM
Would faulty plug wires cause the rear cylinder to stop firing.

I just replaced the plugs about 2 months ago, so I know they are still good.

:) Yes, it could...

and

:) NEVER assume...at the very least, pull the spark plugs, (what colour are they??), clean, gap them and check that you have a good spark, before you put them back in. I would put another set in anyhow...but that's just me!!!

                     
8).......TIGER....... 8)
Title: Re: Help?
Post by: TixonPB on November 15, 2009, 03:42:26 PM
Where could I get a new plug wire set?
Title: Re: Help?
Post by: QBS on November 15, 2009, 04:51:50 PM
Does the bike idle as normal?  If yes, does the rear cylinder cut out at approx. 2k rpm?
Title: Re: Help?
Post by: TixonPB on November 15, 2009, 06:09:50 PM
It idles like it always had. It just stopped when I got home and messed with rear plug.
Title: Re: Help?
Post by: Tiger on November 15, 2009, 09:06:26 PM
Quote from: TixonPB on November 15, 2009, 03:42:26 PM
Where could I get a new plug wire set?

 :) A brand new set of spark plug wires/caps, custom made to order and shipped to any location...only $27.50 + (actual) shipping.......from......Tiger!!

                           
8).......TIGER....... 8)
Title: Re: Help?
Post by: seabee on November 15, 2009, 09:40:34 PM
Quote from: Tiger on November 15, 2009, 09:06:26 PM
Quote from: TixonPB on November 15, 2009, 03:42:26 PM
Where could I get a new plug wire set?

 :) A brand new set of spark plug wires/caps, custom made to order and shipped to any location...only $27.50 + (actual) shipping.......from......Tiger!!

                           
8).......TIGER....... 8)

Without resistors?
Title: Re: Help?
Post by: 67GTO on November 15, 2009, 09:54:32 PM
Tiger's plug wires/caps are better quality than original  :)
Title: Re: Help?
Post by: TixonPB on November 16, 2009, 12:21:22 AM
Before I jump for new plugs and everything, Is there really anything else that could cause the cylinder that doesn't run the tach to die? The strange thing is that the tach didn't act any different, I just lost fire on one cylinder so i took forever to get up to 55 and it was running horribly.
Title: Re: Help?
Post by: QBS on November 16, 2009, 12:34:46 AM
Rev limiter.  Others can point to which wire to disconnect.  Better yet, do a seach on "rev limiter".  There have been endless discussion on the subject.
Title: Re: Help?
Post by: Tiger on November 16, 2009, 05:27:39 AM
Quote from: QBS on November 16, 2009, 12:34:46 AM
Rev limiter.  Others can point to which wire to disconnect.

:) Remove the rear cover to the Gauge cluster, (three philips head screws), locate the black/yellow wire near the centre, disconnect and isolate with a piece of heat shrink or electrical tape. Reinstall the back plate...Voila!!!

Let us know the results when you fire her back up...

             
8).......TIGER....... 8)  
Title: Re: Help?
Post by: YellowJacket! on November 16, 2009, 09:09:00 AM
Quote from: 67GTO on November 15, 2009, 09:54:32 PM
Tiger's plug wires/caps are better quality than original  :)

I'll second that!

David
Title: Re: Help?
Post by: TixonPB on November 16, 2009, 06:17:22 PM
The rev limiter is the yellow and black wire going into the TCI box right? Because that was already cut when I got the bike.
Title: Re: Help?
Post by: Night Vision on November 16, 2009, 07:56:02 PM
Quote from: TixonPB on November 16, 2009, 12:21:22 AM
Before I jump for new plugs and everything, Is there really anything else that could cause the cylinder that doesn't run the tach to die? The strange thing is that the tach didn't act any different, I just lost fire on one cylinder so i took forever to get up to 55 and it was running horribly.

recently, there was a Vision that had a bad pickup that caused it to become a thumper...

http://ridersofvision.net/rovforum/index.php?PHPSESSID=kbs1udjg2qr7uq7made0if9nl3&topic=11056.msg102080#new
Title: Re: Help?
Post by: TixonPB on November 17, 2009, 10:11:41 AM
I may have had a realization. Would it be possible that the rear cylinder dying is what happened before. Maybe that is why it started dumping gas because the front cylinder was running and the rear cylinder was not taking any gas, so it just overflowed the rear carb. Isthat possible? That would explain alot.
Title: Re: Help?
Post by: YellowJacket! on November 17, 2009, 11:51:41 AM
No, the float should keep the carb from overflowing.  You may still have some goo in there that broke loose and is causing the same problem again.

David
Title: Re: Help?
Post by: TixonPB on November 17, 2009, 12:32:58 PM
Well it wasn't leaking this time as far as I know but it has the same symptoms as before so I didn't know if I was possible for the rear cylinder not going could cause it. Righ now if it stops running on the rear cylinder, it doesn't want to run at all.
Title: Re: Help?
Post by: YellowJacket! on November 17, 2009, 05:44:50 PM
I think its contaigous!  Opened my garage door to the smell of gas and YJ pee'd a puddle of gas on my garage floor.  Coming from the overflow.

Ugh.  I guess she doesn't want to be winterized just yet.  LOL

David
Title: Re: Help?
Post by: QBS on November 17, 2009, 07:32:35 PM
Inline fuel cutoff valves....Don't leave home, or the garage without them.
Title: Re: Help?
Post by: Night Vision on November 17, 2009, 08:51:36 PM
another nice thing about the inline cutoff is you can run the carbs dry... there's a little left that the drain screws will take care of, but mostly, they empty out
Title: Re: Help?
Post by: YellowJacket! on November 17, 2009, 11:39:27 PM
Quote from: QBS on November 17, 2009, 07:32:35 PM
Inline fuel cutoff valves....Don't leave home, or the garage without them.

Yeah... I have one of those.  'cept its sitting on top of my workbench.  Lotta good it does me there.

I just think YJ is mad at me since I hadn't been riding her as much.

David
Title: Re: Help?
Post by: TixonPB on November 18, 2009, 10:56:38 PM
So is the general consensus new plugs, or is it still carbs? I got every last bit of junk out of the bowls as far as i can tell and put an in-line filter in. Is it a good bet to change out the wires and everything?
Title: Re: Help?
Post by: seabee on December 01, 2009, 05:31:35 PM
Quote from: seabee on November 15, 2009, 09:40:34 PM
Quote from: Tiger on November 15, 2009, 09:06:26 PM
Quote from: TixonPB on November 15, 2009, 03:42:26 PM
Where could I get a new plug wire set?

 :) A brand new set of spark plug wires/caps, custom made to order and shipped to any location...only $27.50 + (actual) shipping.......from......Tiger!!

                         
8).......TIGER....... 8)

Without resistors?


Same question...do they come without resistors?
Title: Re: Help?
Post by: Tiger on December 01, 2009, 06:40:13 PM
Quote from: TixonPB on November 18, 2009, 10:56:38 PM
Is it a good bet to change out the wires and everything?

8) Yes...
Title: Re: Help?
Post by: Tiger on December 01, 2009, 06:45:08 PM
Quote from: seabee on December 01, 2009, 05:31:35 PM
Without resistors?

Same question...do they come without resistors?

Sorry, I must have missed that post... :-[ The wires that I make up have resistor caps because I use non resistor spark plugs... ;)

                   
8).......TIGER....... 8)
Title: Re: Help?
Post by: seabee on December 01, 2009, 07:03:21 PM
ok thanks.