Small coolant leak - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 5 (permalink) Old 08-23-2019, 07:21 PM Thread Starter
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Small coolant leak

I have a very small coolant leak at the front cylinder base gasket.
the cylinder and head itself are clean so i know the coolant is not coming from the pipe above.
There is no mixing coolant in oil or vice versa, it loses only a very small amount each day.
It will be a winter project since i don't think there is any danger to running as is for now.

I know i have to pull the engine to get it apart.
My question is, do i have to remove the cam chain or can i sneak the cylinder off after removing the pin that goes between the chain?
I don't want to have to take apart more than i need to in order to fix it and will probably end up doing both sides to prevent future leaks.

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post #2 of 5 (permalink) Old 08-25-2019, 07:06 PM Thread Starter
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It would appear that no one has ever tried to remove the top end without taking out the cam chains.

It was a small leak so i used black RTV on the corner that was leaking.
Does not make sense to me to remove the engine and tear it apart to fix a minor leak.
It is a clean bike and looks really good for a 1989 but it is no show bike so a little RTV black won't hurt it.

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post #3 of 5 (permalink) Old 08-25-2019, 09:54 PM
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Yeah, sorry, wish I knew!

1992 US-nonCA * tuxedo mod * r/r relocated

Vulcan slang for newcomers
Service Manual Download
Wiring Diagram + annotations * still undergoing revisions, but still more useful than the generic one. Let me know if you find mistakes or think something additional should be added
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post #4 of 5 (permalink) Old 08-26-2019, 08:42 AM Thread Starter
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It's all good, i figured most people probably follow the service manual.
If i do tear it down this winter to replace the gaskets i will upload photos with info on how i did it if it is possible.
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post #5 of 5 (permalink) Old 10-01-2019, 01:40 PM
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I have the same issue on my '89! 27,000 miles. So far, I've just been topping off the coolant tank. I talked with a mechanic who wants to charge me $300-$500 to replace the front gasket, so I am VERY interested in how this goes for you. PLEASE post your results.

My stator is still good, but I was going to do the Tuxedo mod while the engine is out. That way, I'll be able to replace the stator later on. I was also going to check the engine dampers while I was there.


'89 VN750 Bought stock 4/12/18 @ 17805.9 miles $800. Wrecked once. 27454.5+ miles

Completed modifications:
Removed mufflers, straight pipes out of GB. 110/90 Front Tire. Pick-up coil mod. Shindengen MOSFET FH020AA r/r. USB Outlet + Voltmeter. Repainted Metallic Blue w/ new tank bages. Ear Shave (wo/ coasters) 40/140 NO shims 45MPG. MCCT conversion.

Planned modifications:
Custom LED turn signals. Windshield. Highway Pegs. (Possible) ignition adv. Tuxedo Mod. Ignition coil mod.
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