Problem = Coolant loss & running hot.....ideas? - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 14 (permalink) Old 10-11-2006, 09:11 AM Thread Starter
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Problem = Coolant loss & running hot.....ideas?

My 93 has 22K miles on it. I have put about 1,000 of them on it since I bought it.

I have been adding coolant fairly regularly knowing that it is not a consumable and should be looking for a problem.

There are no external leaks, every so often if I sit still in traffic I get a whiff of antifreeze.

Now when I ride home at 75 - 80 mph, the gauge gets a little right of center, it did not do that before. Does not go into the red zone at all. This morning, riding in, 60 degrees out and the gauge waivered left and right of the temp symbol. Use to bairly move off cold side.

Is there a way to force the fan on and see if that drops the temp?

Besides a head gasket, is there anything I can look for before I start the engine pull?

Jon
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post #2 of 14 (permalink) Old 10-11-2006, 10:24 AM
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Does the oil look good ?

Ron from Jersey
2005 VN750
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post #3 of 14 (permalink) Old 10-11-2006, 01:30 PM
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If you are getting that whiff of antifreeze in the exhaust, I would say it is the head gasket. Now the trick is to figure out which cylinder it is.

Jim W
93 VN 750 "Ursula"
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post #4 of 14 (permalink) Old 10-11-2006, 01:44 PM Thread Starter
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Quote:
Originally Posted by Sky Rider
If you are getting that whiff of antifreeze in the exhaust, I would say it is the head gasket. Now the trick is to figure out which cylinder it is.
If it turns that it is the hg, I would think it's make sense just to do both at the same time. It's an engine pull no matter what. No?

Jon
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post #5 of 14 (permalink) Old 10-11-2006, 01:46 PM Thread Starter
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Quote:
Originally Posted by rnewell
Does the oil look good ?
Looking through the site glass, looks normal. Wish it had a dip stick to wipe.
Might drain out a bit and have a better look.

Jon
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post #6 of 14 (permalink) Old 10-11-2006, 01:53 PM
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You can force the fan on the on position putting a wire as a jumper on the temp sensor that's located on the lower part of the radiator... but before you do that check if the odor that you are smelling it's not coming from coolant overflow... if the pipes are dry, you are likely to be missing fluid by overflowing of the coolant in the tank... if this is the case the most likely thing to blame is a faulty termostat... it's under the gas tank so it isnt easy to reach...
Check you exhaust pipes.. if they are dry then it likely that the thermostat is at blame...

93 VN750
R/R Relocation to the front
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post #7 of 14 (permalink) Old 10-11-2006, 10:35 PM
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Loss of coolant....

I had a similar incident with my bike where it would overheat in slow traffic or if stopped and idling. The antifreeze would expand and leak out of the overflow tube at the reservoir. I found the problem to simply be the connection to the temperature switch for the fan had corroded (it is at the bottom of the radiator where road grunge hits it) preventing my fan from coming on. While at highway speeds, temperature was fine, only stopped it got hot. Clean the connection and place dielectric grease on it. Whether or not that is your problem, I bet it could stand a good cleaning w/ 22k on the odo.

Good luck.

Ben-
SW Ohio

'02 VN750
Pipes drilled
Spline lubed
R/R relocated
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Iridium equipped
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8000-ish miled
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post #8 of 14 (permalink) Old 10-19-2006, 08:08 PM
 
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Check the level of fluid in your radiator.Make sure it is full. If not put more in.Then take it for a ride to warm it up (a couple mile ride)Then park the bike on a piece of plywood under the engine area leave it for a few hours then go back to check it if there are any wet spots on the wood you will be able to find where it leaks(hopefully).................
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post #9 of 14 (permalink) Old 10-19-2006, 10:01 PM
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Get a couple of hungry puppies, put them in an empty room with the bike, then watch them. If there is a leak, they should find it. You may need to keep a black trash bag handy for the throw-aways (puppies). Neighbors get way out-of-whack if you throw away dead puppies in a container they can see into.

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post #10 of 14 (permalink) Old 10-20-2006, 05:09 PM
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Pull the plugs, that should tell you if you have a gasket leak, The plugs will be all gunked up with crap.
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