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Join Date: Nov 2007
Location: Chandler, Arizona
The coolant leak is almost certainly where the metal coolant pipe goes into the head, and like has been said, is an easy fix. Just remove it and replace the o-ring. I put just a tiny bit of grease on the new o-ring to keep from tearing it when you slip the pipe back into place. This is a very common issue with the Vulcan 750. I have had mine leak just a tiny bit from bumping into it while working on the bike with the tank off, but it always stops. It's not the greatest connection in the world.
As for the fuel leak, it is not likely to be the fuel gauge sending unit. it has a pretty solid connection. If the gasket has deteriorated over the years, a new one will fix the problem permanently. I've also rebuilt my petcock a couple of times. It has two major problems. The vacuum diaghram, and the long o-ring type seal between it and the tank. That is not the best way to seal between the petcock and the tank. It either needs a much thicker gasket, like the fuel gauge sending unit, or a threaded connection. I would love to replace mine with something else, but am unaware of anything else that will fit the Vulcan tank. It would not need to have two fuel line connections, you could simply put a T in the fuel line to split it into two lines. In any case, a leaking petcock or a leak between the petcock and the tank is not a big deal. Certainly not big enough to warrant getting rid of the bike for.
If you feel your bike does have to many problems, and you like it, consider getting a newer Vulcan 750. There are several really nice late model Vulcan 750s on my local Craigslist for reasonable prices, and I would love to get one and keep it until mine wears out, but that will likely be several years, and the Vulcan 750 is, for some unknown reason, not a bike that stores well, even when properly prepped and stored indoors. Besides, by the time mine wears out, I may need something else. At the rate I am going, I figure it will last into my late 50s with minimal repairs.
As for your wife, I do understand that. My first wife, and the mother of my 2 grown daughters, simply was not a good match for me, and didn't like anything I did. We wound up divorced in less than 3 years. My current wife is far more understanding, she knew what she was getting into, and while she is not into riding, either on her own bike, or with me, she understands that it is something I am always going to do as long as I am physically able. Jerry.
I am a motorcyclist, NOT a biker.
1997 Vulcan 750, purchased about a week ago
2006 Sportster 1200 Low
2013 Royal Enfield Bullet 500, converted to carb
2001 Yamaha XT225, heavily modified
2004 Honda Rebel 250
1979 Vespa P200E
2002 Vulcan 750 parts bike
1994 Yamaha XT225 parts bike