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I have a DF6 2004 Suzuki, pumps water only with the grommet…

I have a DF6...

I have a DF6 2004 Suzuki, pumps water only with the grommet off from the shift linkage on the lower drive housing. with the grommet installed water stops pumping out the piss hole in 15 seconds..Help

Mechanic's Assistant: Sometimes boat issues seem like they'll be really complicated, but end up being easy to fix. The Marine Mechanic I'm going to connect you with knows all the tricks and shortcuts. Tell me a bit more about what's going on so the Marine Mechanic can help you best.

Water stops pumping after lower housing grommet installed

Mechanic's Assistant: Is there anything else the Marine Mechanic should be aware of?

New h2o pump, tube guide,upper and lower, new h2o pump seal upper.

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Answered in 17 minutes by:
3/29/2018
Charles
Charles, Marine Mechanic
Category: Boat
Satisfied Customers: 4,758
Experience: US Navy (Ret) Certified Mercury Marine Tech with over a decade of repair experience.
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Hello, my name is***** will assist you.

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Have you had the cover off the water pump recently?

How about the middle plate?

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Customer reply replied 3 months ago
all new

Was it doing this before you installed the new pump?

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I am not able to get on the phone currently. I will gladly assist you online here.

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Customer reply replied 3 months ago
same problem. Replaced drive housing gasket and gasket under powerhead

Does it do this in the water as well as when running on a flusher?

When you had the water pump off, did you ensure that the grates on the bottom of the lower unit are clear and the passages are open?

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Customer reply replied 3 months ago
all water passages are clear. Exhaust passages are clear.
Customer reply replied 3 months ago
Running motor in a test tank

Is the driveshaft cover under water when you are testing it?

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Customer reply replied 3 months ago
Its a long shaft, water is up to the for shift linkage grommet. Even lowered water level to lower unit extension. 5inches above h2o pickup

Salt water motor?

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Customer reply replied 3 months ago
No only run in fresh water all its life

When you did the water pump replacement, did you pull up this part and replace the gasket under it?

https://www.ebay.com/itm/282729815193?vectorid=229466&item=282729815193&rmvSB=true

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Customer reply replied 3 months ago
all gaskets and seals
Customer reply replied 3 months ago
No water in gear case and no water in crankcase

I feel that this plate and its gaskets is where the issue lies. If it has a crack in it, the it will not draw water from under the plate, but from the mid housing. Or is there is a gasket blocking the water intake, or even some tape on the bottom of the lower unit could also do it.

With the water pump sealed down, there is no where else that it can draw water into it other than thru this plate.

The water pump will need to come off, and then everything rechecked to make sure that the alignment is correct and that all the gaskets have the needed holes in them.

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Customer reply replied 3 months ago
Question, with linkage grommet off it pumps h2o fine. Install grommet after 10 seconds water stops pumping?
Customer reply replied 3 months ago
Thanks for your time. I will recheck lower gasket and plate. This 4stroke is new to me. Have been a mechanic in marine business trade for 35 years . This stumped me good. Thanks

That is why I feel that either the base has a crack in it, or there is an obstruction getting water to the bottom of the pump.

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Your very welcome. Let me know if you need anything else on this engine.

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Customer reply replied 3 months ago
Maybe go back to either eventide. Or mercury
Customer reply replied 3 months ago
Thanks again

Lol. Suzuki can be a bit tricky to work on sometimes. If you went with Evinrude 4 stroke, they are also made by Suzuki.

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Customer reply replied 3 months ago
How do I sign off

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Charles
Charles, Marine Mechanic
Category: Boat
Satisfied Customers: 4,758
Experience: US Navy (Ret) Certified Mercury Marine Tech with over a decade of repair experience.
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