1985 mariner 40hp weak tell tale

[Zac92]

Hi guys I am having trouble with a motor I just bought I have replaced everything in the water pump gaskets,rings impeller etc and still getting a weak tell tale. I am testing in a bucket where the water comes about an inch or two above the lower unit connection point I am lost any advice would be greatly appreciated..

 

[The Force power]

Welcome to IBoats,

check for partial restricted tell tail-tube/hose, does your unit have a thermostat?

you can shove picture-wire or heavy fish-line up the tell tail and see how far you get in and pull back to see if stuff come out.

bugs like to make nests inside the tube

 

[Zac92]

Thanks for the reply I have replaced the tube and removed tstat which was opening properly from what I can tell also removed covers where tell tale exit and replaced gaskets saw no obstructions there do really know where to go now.

 

[The Force power]

When the Thermostat is closed, very little water will come out of the tell-tail.
Don't forget; the majority of "return water" goes through the exhaust, the Tell-tail is a bypass for just that purpose...to see.

However, you could check if the motor is over heating if not then wait for the thermostat to open and see the increase of water flow
IF no increase...you may have to drop the Lower-unit & check your work...if the impeller is installed correctly (all fins facing the right way) pinched o-rings/ Tube installed properly into the power head

 

[Zac92]

I do not know if the motor has has overheat alert which is why i am scared to let it run to long but after no more than a minute the water coming from the tell tale is really hot I have had the Lu off more times than I would like to admit twice today trying to back flush using water and air along with weed eater string and no change. Have alot of mechanical experience but not with outboards thinking I'm going to have to pull off the powerhead.

 

[The Force power]

Does this motor have a thru hub/prop exhaust? meaning; does it have the right Propeller?
try it with the prop. off

 

[Zac92]

I honestly have no idea I can try that. What are you thinking?

 

[Zac92]

I don't remember if i stated this but the tell tale also has blue smoke coming from it. Also here is a model year/model since you seem to be the only person willing to try and help

1985 40el 6e9 416210

 

[The Force power]

I don't remember if i stated this but the tell tale also has blue smoke coming from it.

Smoke on water? that was a song in the 70's Deep purple..if I remember correctly

I don't know the history on the motor, you do; did it work good before the water pump replacement?

 

[The Force power]

It's a thru hub exhaust, I can't see the exhaust-plate being plugged??
have you checked behind the exhaust cover-plates? to check ports are open

 

[racerone]

Need more water in your test bucket.-----Water should be 6" above the pump !!

 

[Zac92]

I bought the motor with this issue thinking spend 200 bucks replace all the water pump components and be good to go the guy I bought it from said that he put an impeller in it which he did and it still wouldn't pee. But every gasket on the water pump was broken or half way missing so I replaced them all it pees now just not the way it's suppose to. Also I stopped using the bucket and replaced it with a 32 gallon trash can still no change. Are you referring to the screens on the lower unit if so yes.

 

[The Force power]

The "screens" on the Lower unit are the water intake, YES they will have to be well below under water.
If you would look at the lower unit where it meets (bolts on) the mid section if that's 2" under water your good.
These water pumps are not designed to "suck-up" water only "move" water there for it's important that the complete water pump is submerged on start-up.

 

[racerone]

Water has to be 6" above the pump as stated clearly.----Then again there may be an issue with parts at the top of the water tube.----A 4 cylinder motor ?

 

[Zac92]

First off thanks to everyone trying to help this is the only forum that I have gotten response from. With the trash can the water level is well above 6 inches over the lower unit bolts and I have checked all the screens for clogs removed both anodes nothing. It's a 1985 40el 6e9 416210 which is twin carb oil injection (been removed 50:1 ratio is what it calls for) the only thing that makes since is there is an obstruction in the upper tube or water jackets at this point from my perspective. Tried flushing with water and air from telltale and thermostat housing even up thru water tube with no change.

 

[QBhoy]

Sorry if I’ve missed you saying..but did you take the hose off the head where the tell tale comes from ? I had this with an old engine recently. Had been last used in the sea and not flushed. Was full of hardened crystalised salt build up.
Worst case you should check the heads not leaking water elsewhere.
Are you testing it on the water or on hose ?

 

[Zac92]

Well I took everything apart again and found another broken gasket in the water pump that the kit didn't include so I will be installing it today but I honestly don't see this causing that much of a pressure loss what do you guys think?

 

[Zac92]

Well I found 1 more gasket that wasn't included in my kit that was broken I will be replacing it this afternoon if that dosent fix it I don't really know I don't think one gasket would be causing it to have that weak of a flow also I didn't replace the housing due to it has very little wear other than right were the shaft enters the housing could that be causing the issue?

 

[Zac92]

Sorry for the multiple post new to this forum thought it was not posting yes I have removed that hose and replaced also took apart the 2 plates that separate the exhaust and water where the tell tale comes from and it was spotless replaced both gaskets there as well but I am starting to wonder about the housing.

 

[The Force power]

Well I found 1 more gasket that wasn't included in my kit that was broken I will be replacing it this afternoon if that dosent fix it I don't really know I don't think one gasket would be causing it to have that weak of a flow also I didn't replace the housing due to it has very little wear other than right were the shaft enters the housing could that be causing the issue?

Where?? did you find "one more gasket that wasn't included in your kit that was broken"
pics. of housing "where shaft enters housing" would help