Leak in Front of Front Cylinder - Help? - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 8 (permalink) Old 12-10-2006, 09:34 PM Thread Starter
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Leak in Front of Front Cylinder - Help?

Hi, everyone -
I think I found the culprit (ha ha - one of many) on my project bike: see attached pics. On the front cylinder, there are two holes on the front of the block, and it looks like I'm losing oil there. It also looks like maybe a leak in the gasket towards the rear of the cylinder, but I'm waiting to see what happens with that now that I've cleaned it off. As for the two holes in the front, I have a trace memory of a thread from about 6-8 weeks ago (maybe) where someone had similar probs (and some kind soul had diagnosed the problem and a possible solution). Can anyone help? Thanks!

C

Last edited by Crobins365; 08-29-2007 at 09:31 AM.
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post #2 of 8 (permalink) Old 12-10-2006, 09:40 PM
 
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It looks a lot like mine did when the spark plug well o-rings were leaking. There is a drain hole to the front of the cylinder.
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post #3 of 8 (permalink) Old 12-10-2006, 10:10 PM
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It looks to me like maybe the valve cover gasket is leaking but it could be the spark plug well as well. The easiest way would be to clean it all off and then run the engine and see if you can trace where the oil is coming from.

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post #4 of 8 (permalink) Old 12-10-2006, 10:17 PM
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It was bcjoker04 that tried plugging the sparkplug drain hole before it was determined that it shouldn't be plugged.
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post #5 of 8 (permalink) Old 12-11-2006, 07:14 AM Thread Starter
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Thanks, that's sounding familiar now.

Aside from just a lot of dirt and grime, the engine otherwise looks pretty good. I'm taking some comfort in that.... oh, and my newfound prowess at installing the ACCT springs!

C
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post #6 of 8 (permalink) Old 12-11-2006, 07:32 AM Thread Starter
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Quote:
Originally Posted by wwmkwood View Post
It looks a lot like mine did when the spark plug well o-rings were leaking. There is a drain hole to the front of the cylinder.
Did you get replacement o-rings from Bike Bandit? I'm looking through their schematics and nothing's matching up. Quite. Any chance you have a part number? Thanks.

C
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post #7 of 8 (permalink) Old 12-11-2006, 07:59 AM
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was the spark plug tight to undo on that side, as i have seen this caused by a slightly loose plug.

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post #8 of 8 (permalink) Old 12-11-2006, 08:10 AM Thread Starter
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Quote:
Originally Posted by EDALBRIS View Post
was the spark plug tight to undo on that side, as i have seen this caused by a slightly loose plug.
Good question. I haven't bothered to pull 'em yet, 'cause I had wanted to test my ACCT rebuilds. Then I just started yanking parts off yesterday so that I could see what in the world was happening there on the front cyl. Probably won't hurt to replace the o-rings in the retainers. Also, like Jon (93VN750), I'm gonna replace the hoses and clamps on the coolant system - as long as the engine's laid bare, might as well fix or replace what's accessible!

C
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