Issue with 2000 300 Pro max

**wannabee** · 09-14-2017, 01:51 PM

The tell tale on the port motor has gone weak. There is water running down the outside of the lower shroud at idle although water pressure gauge is showing 5 psi. Coming in from fishing the other day (at 4500 rpm) motor stumbled twice and there was a beep. I think it was trying to tell me overheat?

Can I have a leak in the water supply line and how tough is it to pull the lower shroud off these motors? Boat is in a lift.....

I took a video but it won't load.

Took upper cover off and started motor- no visible leaks at powerhead.

This is the same motor we replaced fuel pump on.... We have nicknamed port motor Clyde.....

Thanks guys.

**wannabee** · 09-14-2017, 02:22 PM

OK painted up a Diagram. Yellow area is where water is coming down///

**vnemous** · 09-14-2017, 02:48 PM

Check the diaphragm on your poppet. When it ruptures you will have a leak there but usually the motor wont warm up. If its an alien cowl you have to take the skirt off. Easy job.

**wannabee** · 09-14-2017, 02:49 PM

Where is the poppet on these motors.

If you see where the diagram is there is no water leaking at the motor. I suspect the waterr supply line coming up from the LU.

How hard is the skirt to remove? 4 bolts? I am mechanically inclined so thats not the issue- hanging off the back of a Donzi 35 ZF is NOT EASY>

Thanks-

**vnemous** · 09-14-2017, 02:57 PM

6 if they are all there. Starboard side under skirt.

**vnemous** · 09-14-2017, 02:59 PM

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**vnemous** · 09-14-2017, 03:01 PM

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**wannabee** · 09-14-2017, 03:24 PM

Could be from debris too. We have lots of weeds in the canal.

**kct11** · 09-14-2017, 03:44 PM

Check the tell tail hose for a pebble or weeds.

**wannabee** · 09-14-2017, 04:00 PM

We have. I think the poppet is gone.... either diaphram or ?

**Capt.Insane-o** · 09-14-2017, 04:37 PM

Have your wife blow out the pee hole.

**Da Bull** · 09-14-2017, 05:25 PM

My guess is that your powerhead base gasket is blown. #4 in first diagram. Those motors have been bad about that. Mine blew several. Even torque is the key.

**wannabee** · 09-16-2017, 08:08 AM

So can I check the Poppet by taking the collar #48 off? Is it just some screws?

**vnemous** · 09-16-2017, 08:11 AM

Yes it is 6 I believe 1/4-20 screws. Locate poppet cover, remove two more screws and check diaphragm. While your there replace it anyway and the two gaskets. JMO

**wannabee** · 09-16-2017, 08:17 AM

Where do I find these? Finding a fuel pump was very tough!!!! Is this part common across several motors? Venemous if you have part #'s that would be great. Thanks