01 intermittent bogging of throttle
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- Heavy Armor
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Re: 01 intermittent bogging of throttle
Welp, I replaced all the vacuum lines above the carbs. After reinstalling I managed to spray and get it to bog once for just a second, but then it disappeared and I can't reproduce. Whatever the case, it had zero impact on running. Still spluttery and bogging when you rev it. I noticed also there's a slight hanging of RPMs as it winds down. Still seems like a vacuum leak, but heck if I have any clue where to look now. Again, these carbs are freshly built by Carl Leo with less than 100 miles on them, but I'm afraid I'm gonna have to pull them back off and poke and prod.
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Re: 01 intermittent bogging of throttle
Did you,by any chance,give a call to Carl to see if he had any insite to your problem?
'99 Voyager VXII,'58 Cushman Eagle
- Heavy Armor
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Re: 01 intermittent bogging of throttle
Naah. I don't wanna bother anyone with an over-the-phone troubleshooting. I've been on the receiving end of those and they're a PITA.
I'mma hook the Carbtune back up to it with the airbox still attached and see if I can pinpoint a certain carb behaving differently than the rest. My dad's an actual mechanic, so if I can't make any progress after this I'll make him look at it.
I'mma hook the Carbtune back up to it with the airbox still attached and see if I can pinpoint a certain carb behaving differently than the rest. My dad's an actual mechanic, so if I can't make any progress after this I'll make him look at it.
- Heavy Armor
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Re: 01 intermittent bogging of throttle
Here's the Carbtune vid. I have no idea if this behavior is normal. Thought one carb might be obviously puttering compared to the others, but doesn't seem to be the case. The diving and climbing doesn't behave like I expected. Slow rolls cause a quick dive then a climb, whereas a hard roll makes a constant dive...?
https://youtu.be/wVwm4rKeko4
https://youtu.be/wVwm4rKeko4
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Re: 01 intermittent bogging of throttle
That reminds me of the fuel efficiency gauge in a '77 Monte Carlo I once abused. Put your foot in it and the needle goes left, and it stays there as long as the foot is into it. Ease up on the foot, and the needle goes right back over to the right. It's eerily similar to what the gas gauge did.Heavy Armor wrote: ↑Mon Aug 12, 2024 8:59 pm Here's the Carbtune vid. I have no idea if this behavior is normal. Thought one carb might be obviously puttering compared to the others, but doesn't seem to be the case. The diving and climbing doesn't behave like I expected. Slow rolls cause a quick dive then a climb, whereas a hard roll makes a constant dive...?
https://youtu.be/wVwm4rKeko4
I see you don't want to trouble Carl with this, but if you are bothering him, he will tell you. If he thinks you ask a stupid question, he will say so then prescribe a remedy for what ails your XII. For what it's worth, I'd send him the video.
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- triton28 (Tue Aug 13, 2024 6:26 pm)
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Re: 01 intermittent bogging of throttle
Since you've ruled out plugs, battery, and the air horn, I'd check the fuel pump and filter next. An intermittent problem like this often points to a clog or failing pump.
- Heavy Armor
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Re: 01 intermittent bogging of throttle
Fuel pump ticked away, though when it first started up it kinda revved a little, like:
tikka-tikka-tikka-TIKKATIKKATIKKATIKKA-tikka-tikka-tikka-TIKKATIKKATIKKA.....
and then it slowed down and stopped as expected.
Sound normal?
Is there a cleaning method for these things, or do you just buy a replacement?
tikka-tikka-tikka-TIKKATIKKATIKKATIKKA-tikka-tikka-tikka-TIKKATIKKATIKKA.....
and then it slowed down and stopped as expected.
Sound normal?
Is there a cleaning method for these things, or do you just buy a replacement?
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Re: 01 intermittent bogging of throttle
Heavy Armor wrote: ↑Fri Aug 16, 2024 9:46 pm Fuel pump ticked away, though when it first started up it kinda revved a little, like:
tikka-tikka-tikka-TIKKATIKKATIKKATIKKA-tikka-tikka-tikka-TIKKATIKKATIKKA.....
and then it slowed down and stopped as expected.
Sound normal?That does sound like the pump is doing what it should
Is there a cleaning method for these things, or do you just buy a replacement?
'99 Voyager VXII,'58 Cushman Eagle
- GrandpaDenny
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Re: 01 intermittent bogging of throttle
Take a look in the Tech center, under Dollar for Dollar I believe. There is a great explanation of how to clean the points on the fuel pump. The OEM pump is superior to anything you'll find to replace it. As for cleaning it out, the remedy of choice for many of us has been Seafoam in the tank.
Dennis Fariello
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VXII Manuals:
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Philadelphia, PA
2000 Voyager XII "Gertrude" - deceased
1993 Vulcan 88 "Emily"
South Jersey Retreads
Patriot Guard Riders
Warriors Watch Riders
VXII Manuals:
https://amervoyassoc.org/zg1200manuals.php
- SantaCruzer
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Re: 01 intermittent bogging of throttle
Hello My name is Ben. I am very new here. I have a question for the OP. Does the bike you are working have the stock airbox. I am having a similar problem with my 01. But the previous owner removed the stock airbox and put individual pods on. He said he did the re-jet and I believe he did as he gave me the bag the new jets came in with the old jets. Just wondering thanks.
Ben Spadaro
Ben Spadaro
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It is worth doing twice.
It is worth doing twice.
- Nails
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Re: 01 intermittent bogging of throttle
Pods suck for CV carbs -- I wouldn't expect them to work very well. There are other posts here about that.
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Nails
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Re: 01 intermittent bogging of throttle
Thank you Nails. I am still struggling with the forum search function. But I will figure it out.
Ben
Ben
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It is worth doing twice.
It is worth doing twice.