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Stalls all the time

Old 04-19-2017, 04:37 PM
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Stalls all the time

Background:

I have a trip on Friday. I need to correct this before then or cancel the trip.
Took my 99 to a local shop due to time constraints
Replaced CCT and rectifier

Picked it up tonight and have several issues:
- Will not idle (stalls). Idle falls to 500rpm and dies
- No power, bogs down at heavy throttle

Suggestions? Annual trip to the Dragon is dependant on my fixing this.

Thanks,
Mike
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Old 04-19-2017, 04:46 PM
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Did you/they replace with manual cct's or autos?
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Old 04-19-2017, 04:49 PM
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Manuals
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Old 04-19-2017, 04:55 PM
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Very well could be too tight!
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Old 04-19-2017, 05:02 PM
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I'd not run it like that. Puts a lot of stress on cam bearings... the cam chain...

I set mine by ear and feel while running but I'd hardly recommend it to someone with little or no experience.
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Old 04-19-2017, 05:28 PM
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So too tight will do it, OK.

He said they were finger-tight. How do you recommend I set them?
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Old 04-19-2017, 05:36 PM
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If you didn't do the installation yourself, I'm not sure I'd recommend you adjust them. You can grenade your engine pretty easy if you screw up. No offence intended.
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Old 04-19-2017, 06:12 PM
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Did they refit the vacuum hose for the fuel tap correctly?
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Old 04-19-2017, 08:27 PM
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That is where I would start....
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Old 04-20-2017, 11:43 AM
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and make sure they havnt timed the engine 180 out,, mine done the same and thats one of the things i found was wrong.
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Old 04-20-2017, 04:20 PM
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Pulled the tank and air cleaner to see what stood out. Found nothing obvious, although the mCCTs looked odd. In general, should the screw rod lengths be significantly different?

Adjusted the idle screw and she'll stay running now, provided I don't play with the throttle.
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Old 04-20-2017, 04:56 PM
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Did you verify that the fuel vacuum tap is working properly and lines connected correctly?

If it idles fine but won't take any throttle I'd say you have a fueling issue rather than anything related to the MCCTs. IIRC the amount of thread showing on my APE MCCTs is different front to back.

As suggested above, I would start with the fuel tank, check the mesh screen in the intake is clear, then confirm that fuel flows freely to each carb when a vacuum is applied to the tap; a good mouth suck is enough to open the tap and won't result in a mouthful of fuel.

Just a thought, is the manual fuel tap fully open? That would be anticlockwise looking from the front of the tank.

One other quick check would be drain the carb bowls and see if a decent quantity comes out.

After that I would be pulling the carbs and cleaning jets but I would do that after verifying the fuel supply works.

And one last suggestion. I recall reading where a VTR ran like **** due to a failing battery. Given you had the RR replaced, are you sure your battery is in good health? Are you able to swap in a known good battery for a diagnostic test? If not you could use jumpers from a car battery to the battery positive and the frame, but disconnect the bike battery negative lead so it is out of the circuit.
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Old 04-20-2017, 05:27 PM
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Talking

Originally Posted by IT_Mike View Post
- Will not idle (stalls). Idle falls to 500rpm and dies.
It doesn't idle fine...

Maybe if all these suggestions don't work, you could loosen the ccts about 1/2 turn each. Keep track, maybe with a paint pen mark, where they are set now. If 1/2 turn improves idle, run it and see how much better it is. Keep a keen ear for a type of chatter sound. You Do Not want to get too loose, but if they are too tight, it can slow down idle. I've done it, on an f4i to be exact. That cct is a pita to get at.

Last edited by Wolverine; 04-20-2017 at 05:33 PM.
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Old 04-22-2017, 08:15 PM
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So Mike, hope you didn't miss your US129 trip. Have pics to share?
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Old 04-23-2017, 05:43 AM
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No, missed it. Tried backing each off about 1/2 turn and adjusting the idle screw. Idles now, but stalls at the slightest touch of the throttle.

I'm going to need to tear her down and check the cam gears.
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Old 04-23-2017, 06:34 AM
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Have you sprayed some stating fluid (or your choice of flammable spray) around the carb boots? Any difference with the enrichener (choke) pulled out?
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Old 04-23-2017, 06:43 AM
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It runs, just not reliably. I put 700 miles on it in two weeks before this without issue. I just have to figure out what they did.
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Old 04-23-2017, 07:05 AM
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Maybe they should figure out what they did!!
Sorry to hear ya missed out. I'd love to get down there again.
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