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post #1 of 41 Old 09-12-2012 Thread Starter
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Yamaha outboard no water through tell tail

I have a Yamaha 67D-28199-71, 4-stroke 4hp outboard engine.

It has not been started for the best part of 5 years.

I have been testing it in a fresh water plunge pool (approximately 3 feet deep.) and the engine has fired up fine however, there is only a small smattering of water not even worth speaking about just a very small almost water vapors coming out.

I believe the tell tail should have a thin jet coming out all the time.

I am reluctant to change the impeller as the first job as the outboard has hardly ever been used less than (12 hours since new) as I am new to outboards and have limited tools, so If i do this I could get myself in a bit of a mess. I am wondering if there are any things I could do first to see if it gets the water flowing again.

(when i started the engine i ran it for less than 10 seconds as I didn't want to overheat the engine.)

Thanks for any help,

James
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post #2 of 41 Old 09-12-2012
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Re: Yamaha outboard no water through tell tail

Try poking a wire, like a paper clip into the water telltale tube.
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post #3 of 41 Old 09-12-2012
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Re: Yamaha outboard no water through tell tail

Unfortunately replacing, or checking the impeller is about the only thing you can do.

Even if 5 of the six blades are still there and one is blocking the path - you have to dig it out.
And when the next blade throws off - you'll for sure be 5 miles from where you want to be.

Good news, doesn't take much in the way of tools. Most outboards of that size are pretty standard - put it on it's head, pop the four bolts on the bottom, pry it open etc..
Probably all of it is the same (about a 10mm socket). Maybe if you are lucky you got someone on your pier to help.

Or if money is in more supply than handiness - take it to the shop and pony up the bucks.

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Re: Yamaha outboard no water through tell tail

Thanks for your replies,

Money is not handier than handiness .

So just pull the bottom off and pop the impella housing off and check it out?

The impella must just not be turning as practically no water is coming out of the tell tail.

I have tried poking the tell tail with a paper clip but it just isn't doing anything.

I should imagine before the engine was left for 5 years it was probably not flushed out with fresh water before it was left.
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Re: Yamaha outboard no water through tell tail

I have not ran the engine in gear and only for 10 secs in neutral.

But I don't believe this should effect the tell tail?
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Re: Yamaha outboard no water through tell tail

Being in gear wont have any effect on the tell tail. If you could not clean it out with a wire then replacing the impeller is the next logical step. The tell tail will occasionally get blocked with debris and usually can be cleaned out with a wire
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post #7 of 41 Old 09-12-2012
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Re: Yamaha outboard no water through tell tail

Both times that my telltale stopped spitting it was clogged. It was not a failed impeller. Best to fix the easy stuff first. Like my paw paw always said, better check them bulbs n fuses afore you rip out the wirin' harness.


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post #8 of 41 Old 09-12-2012
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Re: Yamaha outboard no water through tell tail

Maybe easier to check the thermostat. If it was put away without flushing there may be enough salt deposits to restrict the flow. Some motors have a connection for a garden hose or maybe use the "ears" type flusher to give it a good blast. If the "pee" stream increases to normal with the flusher it may well be the inpeller. Unless someone ran it "dry" for longer than a minute or two the impeller should last a long time. Or if it was run in heavy mud or sand, which may be dislodged with the flusher. If not, time to take apart. Try the easy things first.

Cabela's: Motor Flushers

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Last edited by dabnis; 09-12-2012 at 04:44 PM. Reason: more info
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post #9 of 41 Old 09-12-2012
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Re: Yamaha outboard no water through tell tail

I think a 5 year old water pump is due for a new impella whether the tell tale is peeing or not.

Every 3 years. Right?

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post #10 of 41 Old 09-12-2012
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Re: Yamaha outboard no water through tell tail

Quote:
Originally Posted by CarbonSink62 View Post
I think a 5 year old water pump is due for a new impella whether the tell tale is peeing or not.

Every 3 years. Right?
Agree. 5 Years on a water pump is about max regardless of the hours. Dry rote! Even If it looks fine when you pull it out I would not trust it. However the most likely cause is dirt dobbers or other critters that have crawled up there and nested. Run some wire up the hole also... Very inexpensive fixes. Good luck.
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