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Old July 7th, 2009, 11:22 AM
trailin_reds trailin_reds is offline
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Default Yamaha 250 HPDI Vmax Excessive Smoke and Oil Leak

I recently had the local dealer fix a fuel problem on my 2004 250 HPDI Vmax and they saw that the oil pump was on recall. They replaced the pump and lately I have been having oil issues but I do not know if it is related.

The issues are two fold:
1. The engine sometimes smokes excessively after running and doesn't seem to quit until some time after you start it the next time.

I checked the oil "regulating arm" to see if it was getting hung on wires or hoses and it doesn't seem to be.

2. Lately I found oil leaking down the inside of the motor and eventually into the water by means of the lower unit. Not from the lower unit just traveling down the outer surface of it from inside the motor. It seems to be coming from the motor mounted tank but I can not tell where on it??

I pulled the cowling off and looked for signs that the oil level was getting too high in the motor mounted tank and it didn't seem to be. With this being the case I couldn't tell if the tank was filling to much while running above idle and then returning to a normal level while in low speed.

These two items seem to me to be unrelated but I don't know if maybe the two symptoms together could pin point something in somebody elses eyes.

Thanks for your help in advance!
Jeb
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Old July 7th, 2009, 02:50 PM
al_much al_much is offline
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Default Re: Yamaha 250 HPDI Vmax Excessive Smoke and Oil Leak

I just developed same problem, smoking,oil leaking in housing. Also oil tank on side of engine over fills . Looks like oil leaking out of one of the carb intakes. Any guesses? Mine is '94 115 HP Yamaha

Last edited by al_much : July 7th, 2009 at 02:52 PM. Reason: add info
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Old July 7th, 2009, 07:02 PM
rodbolt rodbolt is offline
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Location: Kitty Hawk NC
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Default Re: Yamaha 250 HPDI Vmax Excessive Smoke and Oil Leak

the 94 V4 and the VZ250 use entirely different oil system controls.
on the VZ250, what are the numbers and letters stamped on the control arm ?
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Old July 8th, 2009, 09:52 AM
trailin_reds trailin_reds is offline
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Default Re: Yamaha 250 HPDI Vmax Excessive Smoke and Oil Leak

I will take a look at the numbers and get back to you. Curious, can you tell me where you may be going with it?
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