1989 Johnson 110HP - teething issues

[reeldutch]

Re: 1989 Johnson 110HP - teething issues

he is saying connect a hose that will go from your cylinderheads to the outside of the motor and just dump it out.

you will have low waterpressure.
and an engine that runs way to cool and will idle like crap.
if there is a other problem causing your overheat and you are just cooling that motor with this method
running it at high rpm might cause some serious damage.

i would recheck the tstats and pressure releave valves.
take the heads of and replace the deflectors.
take the cylinderhead covers off and clean all the crud out of there.
make shure your watertube is not leaking and you have enough waterpressure at wot.
about 35psi.

that should take care of your problem.

what spark plugs are you using?

 

[CH1968]

Re: 1989 Johnson 110HP - teething issues

Solittle-
Why replace the deflectors.
What significance do they play in overheating/cooling?
What are they?
I have the manual but do not see any reference made to these deflectors...
You say they look like 1/4" fuel lines and are in the water passages in the block. How do I disconnect them?

Reeldutch-
What to look for when recheckign the tstates and pressure releif valves?
Which watertube are u referring to?
Currently using the Champion plugs - as per specification.

THoughts?

 

[CH1968]

Re: 1989 Johnson 110HP - teething issues

Is the technical name for water deflectors - water passage restictors?

Cam

 

[CH1968]

Re: 1989 Johnson 110HP - teething issues

Ok - Just to clarify - Heads are not removed but rather head covers - wiht water jackets.

How can I remove these restrictors wiht head still in place?

Regards

 

[reeldutch]

Re: 1989 Johnson 110HP - teething issues

the waterflow restrictors are very easy to remove and install.
after a few years they swell up and restrict more than they should.

the watertube im refering to is the water tube that goes from the adaptorplate to the waterpump.
any leak there will result in not enough water pressure.

if you have not enough water pressure your poppetvalves will not open all the way at high speed and overheat at high speed.

because you can idle it without overheating your thermostats are regulating that waterflow and that indicates that that is working fine.

for some reason your popet valves dont open up as it should. not anough waterpresure because of
- bad waterpump
- leaking watertube
- restrictiom in cooling system
- engine mounted to high on transom
- cavitating and ventilating causing air to be sucket up trough waterpump.

 

[CH1968]

Re: 1989 Johnson 110HP - teething issues

Thanks Reeldutch.

Stil can't picture thi swater tube.. pictures?

My transom is 25". My leg is 25" How do I determine if engine is mounted too high on trasnom?

How do i tell if cavitating and ventilating ?

Cam

 

[CH1968]

Re: 1989 Johnson 110HP - teething issues

please advise how i can remove the water restrictors when head is still intact on block on boat?

 

[CH1968]

Re: 1989 Johnson 110HP - teething issues

yes it does, that converts to 183F 167F. should be 140-145F either the impeller is failing, tstat not opening, or poppet need to be replaced. flush the complete motor, are you running in salt water. where are you?

Daddy, when u state "flush complete motor", do u simply mena putting ear muffs on bottom leg water inlet as per usual and run hose? Or do u mean somehting else when say "complete"?

Cam

 

[reeldutch]

Re: 1989 Johnson 110HP - teething issues

the anti ventilation plate should be even with the bottum of the hull

the watertube is were you stick the waterpump in and go's all the way up to the adapter.
if there is a leak then you will loose waterpressure.

 

[reeldutch]

Re: 1989 Johnson 110HP - teething issues

the waterflow restrictors or deflectors are inside the powerhead under the cylinderheads.
you just pull them out with needle nose pliers.
and install them with needlenose pliers.

 

[CH1968]

Re: 1989 Johnson 110HP - teething issues

Thanks reeldutch.

When you say... "the anti ventilation plate should be even with the bottum of the hull"

Is this with the motor fully tilted down at max?

Other say the ventiplation plate should be 1 or 2 " above the bottom of hull.

The water restrictors do look a bit swollen and sick actually. I will remove them.

I will check the water tube.

Cam

 

[tashasdaddy]

Re: 1989 Johnson 110HP - teething issues

"flush complete motor", with the lower off to recheck the impeller, to make sure the keys is in it. and the tstat and poppect out. flush from the tstat to the lower.. from the water tube up to the motor.. from the head thru the motor. make sure the flow is not restricted.
there is a reason it is running hot.

there is also another long shot. is that the gasket on the exhaust cover is blown into the the cooling system, and exhaust pressure is not letting water get to the head.