Lost manifold hose - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 55 (permalink) Old 04-10-2016, 03:17 PM Thread Starter
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Lost manifold hose

Is there a vacuum line anywhere on our bikes that would allow engine to suck SeaFoam into the top end of the combustion system where it could reach the valves and etc?
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post #2 of 55 (permalink) Old 04-10-2016, 03:21 PM
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Is there a vacuum line anywhere on our bikes that would allow engine to suck SeaFoam into the top end of the combustion system where it could reach the valves and etc?
How 'bout a "Spray" Seafoam ?

'86 VN750 13,700 mi -Stock
-Purchased 2008 w/8800mi
Replaced ALL Cables . Kuryakyn LED Voltmeter
SilverStar Ultra 9003/HB2 H4 Headlamp, Jardine Fwd Controls,
Iridiums DPR7EIX-9 & Wires, Tuxedo Mod, Coil Mod, P/U Sensor Mod, Fork Seals,
Splines Lubed - 11/4/2012 - MF AGM Battery
Additional Flashing LED Brake Light on Trunk
Dampers went out @ 13+K !
After TOC MCCT's..... so amazingly quiet I discovered a rattling heat shield on my stock exhaust !
...have a vulcan good day!
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post #3 of 55 (permalink) Old 04-10-2016, 03:35 PM
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no vacuum line really. I put some into a spray bottle and used it like that (sprayed down the throat of the carbs)
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post #4 of 55 (permalink) Old 04-10-2016, 03:39 PM
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post #5 of 55 (permalink) Old 04-10-2016, 04:36 PM Thread Starter
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thanks all!

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post #6 of 55 (permalink) Old 04-10-2016, 04:41 PM
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How much do you spray into the carbs? Or, let me ask this differently, aside from cleaning the carbs themselves, how much would you think should be sprayed into the carbs to provide combustion chamber/valve cleaning?
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post #7 of 55 (permalink) Old 04-10-2016, 04:49 PM
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Originally Posted by Chris and Shim View Post
How much do you spray into the carbs? Or, let me ask this differently, aside from cleaning the carbs themselves, how much would you think should be sprayed into the carbs to provide combustion chamber/valve cleaning?
Watch your increased exhaust smoke/lack of ....spray in 2-3 second intervals till normal exhaust again .

'86 VN750 13,700 mi -Stock
-Purchased 2008 w/8800mi
Replaced ALL Cables . Kuryakyn LED Voltmeter
SilverStar Ultra 9003/HB2 H4 Headlamp, Jardine Fwd Controls,
Iridiums DPR7EIX-9 & Wires, Tuxedo Mod, Coil Mod, P/U Sensor Mod, Fork Seals,
Splines Lubed - 11/4/2012 - MF AGM Battery
Additional Flashing LED Brake Light on Trunk
Dampers went out @ 13+K !
After TOC MCCT's..... so amazingly quiet I discovered a rattling heat shield on my stock exhaust !
...have a vulcan good day!

Last edited by WilliamTech; 04-10-2016 at 04:53 PM.
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post #8 of 55 (permalink) Old 04-10-2016, 04:53 PM Thread Starter
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Originally Posted by Chris and Shim View Post
How much do you spray into the carbs? Or, let me ask this differently, aside from cleaning the carbs themselves, how much would you think should be sprayed into the carbs to provide combustion chamber/valve cleaning?
( Roadhopper is scratchin his head with a poopy look on his face thinking far into the future about boring out a manifold mod just for this purpose )

Good question!

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post #9 of 55 (permalink) Old 04-10-2016, 08:31 PM
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This sounds simple. A few seconds on this side then a few seconds on that side. Repeat. I think I will go ahead and do this. Since my bike is running decently, but not completely normal, this seems like an easy thing to do. It runs mostly good but right at 4000 rpm it falters. It's not the hose setup as I had gone through that earlier this year and trimmed the end at 45 degrees so I doubt that's it. So this sounds like an easy plan. I can only do it on a weekend since we watch our youngest two grandkids Mon - Friday and the baby is a handful right now. The wife would shoot me if I wander off to do fun stuff. So I must wait until a weekend AND hope that the weather cooperates.
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post #10 of 55 (permalink) Old 04-10-2016, 11:56 PM Thread Starter
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Originally Posted by Chris and Shim View Post
This sounds simple. A few seconds on this side then a few seconds on that side. Repeat. I think I will go ahead and do this. Since my bike is running decently, but not completely normal, this seems like an easy thing to do. It runs mostly good but right at 4000 rpm it falters. It's not the hose setup as I had gone through that earlier this year and trimmed the end at 45 degrees so I doubt that's it. So this sounds like an easy plan. I can only do it on a weekend since we watch our youngest two grandkids Mon - Friday and the baby is a handful right now. The wife would shoot me if I wander off to do fun stuff. So I must wait until a weekend AND hope that the weather cooperates.
You lost me on the "this side... that side". You mean you're going to poke a hole into the manifold drilling a little on each side? Or... you mean your going to spray the deep creep into one side of the carb then the other? Or . . . ???
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