So Over This Bike!! - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 23 (permalink) Old 11-05-2013, 09:31 PM Thread Starter
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So Over This Bike!!

In one years time I've had the motor out 3 times, new shocks, new forkseals, new tires. I am still having issues. I am not a newbie I have owned bikes for years and have rebuilt motors.
I just replaces the water pump seal and impeller. It was over heating and blowing steam out the breather tube, as well as dripping out of weep hole.
Starts fine, runs fine, lots of power. but still has steam when it gets real hot.
Also makes a ticking noise, I have forced ACCT while running and sound stays.
I will post links to some videos so you can see and listen.
First one is the ticking.

Ken

http://s252.photobucket.com/user/FFl...tml?sort=4&o=2

Last edited by ffltstn; 11-06-2013 at 08:43 AM. Reason: correct mcct to acct
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post #2 of 23 (permalink) Old 11-05-2013, 09:32 PM Thread Starter
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post #3 of 23 (permalink) Old 11-05-2013, 09:35 PM Thread Starter
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Third and forth is after I let it sit and get warm (see last video of gauge). and then I rev'd it up and I got steam out of over flow and out of breather.

http://s252.photobucket.com/user/FFl...tml?sort=4&o=1

http://s252.photobucket.com/user/FFl...tml?sort=4&o=3
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post #4 of 23 (permalink) Old 11-05-2013, 09:52 PM
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I'd have to say, blown head gasket.

See which spark plug looks steam cleaned.

Nothing out of either pipe?

Blown head gaskets don't always make steam , sometimes the water just ends up in the oil, which ends up looking like a milkshake.

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post #5 of 23 (permalink) Old 11-05-2013, 10:50 PM
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The ticking could be the hydraulic lifters. If there is steam being vented into the atmosphere, it is coming from somewhere. Shouldn't be hard to find.

The one problem I have with the Vulcan engine is how complicated it is. It is ridiculously complicated. It has twice the parts of most v-twins. It only needed 2 cams (not 4), 2 spark plugs (not 4), 4 valves (not 8), 2 cam chains (not 4, and the required 2 jackshafts), it did not need a balancer (either let it vibrate, or use offset crankpins), it only needed one carb (not 2, that are very difficult to remove/install. One carb would also have eliminated the "ears" that so many people seem to hate), it could have been designed with a cover that allowed replacing the stator without pulling the motor (but wasn't), it could have had properly designed cam chain tensioners that lasted forever (like so many other bikes have) Oh, and the shift shaft could have been designed with a positive stop, so that dropping the bike on the shifter wouldn't break it.


Despite all these design issues, I expect mine to pass 100,000 miles with no issues other than the cam chain tensioners and a carb removal and clean. But the more complicated something is, the more things there are to go wrong, so the more likely it becomes that something will go wrong. My next bike will be simpler. And probably chain or belt drive. I've done enough spline lubes to last 3 lifetimes.

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post #6 of 23 (permalink) Old 11-05-2013, 11:59 PM
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Quote:
Originally Posted by VN750Rider/Jerry View Post
The ticking could be the hydraulic lifters. If there is steam being vented into the atmosphere, it is coming from somewhere. Shouldn't be hard to find.

The one problem I have with the Vulcan engine is how complicated it is. It is ridiculously complicated. It has twice the parts of most v-twins. It only needed 2 cams (not 4), 2 spark plugs (not 4), 4 valves (not 8), 2 cam chains (not 4, and the required 2 jackshafts), it did not need a balancer (either let it vibrate, or use offset crankpins), it only needed one carb (not 2, that are very difficult to remove/install. One carb would also have eliminated the "ears" that so many people seem to hate), it could have been designed with a cover that allowed replacing the stator without pulling the motor (but wasn't), it could have had properly designed cam chain tensioners that lasted forever (like so many other bikes have) Oh, and the shift shaft could have been designed with a positive stop, so that dropping the bike on the shifter wouldn't break it.


Despite all these design issues, I expect mine to pass 100,000 miles with no issues other than the cam chain tensioners and a carb removal and clean. But the more complicated something is, the more things there are to go wrong, so the more likely it becomes that something will go wrong. My next bike will be simpler. And probably chain or belt drive. I've done enough spline lubes to last 3 lifetimes.

sounds like a "finely engineered machine" to me.

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post #7 of 23 (permalink) Old 11-06-2013, 01:30 AM
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Without all the extra valves, cams, etc., we wouldn't have anything near the performance levels we enjoy now.

It's got usable low-end, and a mid-range that pulls hard clear past redline.

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Last edited by Spockster; 11-06-2013 at 01:34 AM.
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post #8 of 23 (permalink) Old 11-06-2013, 01:55 AM
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Back on topic here... The noise sounds like the Hydralic Lifters. The steam thing has me worried... I don't see how moisture is getting into the breather with out getting into the oil.
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post #9 of 23 (permalink) Old 11-06-2013, 02:56 AM
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steam and rattles.

I don't know the bike,but i'd be checking the oil pressure, and the thermostat, i'd also have a large screwdriver blunt end to my ear,using it like a stethoscope, getting right on the sounds position. sounds like the overhead gear is starving for oil, or the cam chains are slapping on something. it's radical any way you look at it.

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post #10 of 23 (permalink) Old 11-06-2013, 07:15 AM
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Quote:
Originally Posted by ffltstn View Post
.................
Also makes a ticking noise, I have forced mcct while running and sound stays.
I will post links to some videos so you can see and listen.
First one is the ticking.

Ken

http://s252.photobucket.com/user/FFl...tml?sort=4&o=2
How did you adjust the MCCT's? The video has ACCT's in it. Are you saying you have put a small screwdriver in the acct and forced it to tight the chain. If the spring is bad or not properly wand correctly before putting it in the engine it will loosen back up. Also in the one with the heated engine when you got near the lower front of the engine with the camera I'm thinking we should be able to hear the fan whining or at least hear some wind noise. Is the fan itself spinning? The plastic has been known to break where the fan motor shaft connects and not allow the fan itself to spin at full speed.
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