Cooling System Warning Alarm

[Smelly]

HI Wayne - U like it hey?

Has gone on for a while but I am sure we love it!

What did you think about the Mother-In-Law bit..?

The cast has some great actors - with an unknown script and a climax ending..Stay tuned!

Smelly

[Owen]

Yes, the seaweed could cause it to over heat.

It probably just flooded.
I just mentioned the fuel and kill switch because they are easy to bump while you're messing around.
It may also just need to cool down.

Just read the first page of the hitch hikers guide to the galaxy

cheers,
Owen

[Roughasguts]

Smelly how much idling did you do, was there much smoke thinking oiling up here.

If you get it fired up and take it to the ramp next time run it around 1000 rpm I find mine is cooler at that rev's idling seems to run hot due to slower water circulation, and yeah the plugs will oil up as well.

Just pull the plugs mate if there oily and spray them, the electrode with carby clean.

Sounds like a good result mate, just about to turn the corner.

[Roughasguts]

Heres a tip for next time Smelly if she don't start due to flooding, and your out a bit and can't clean the plugs.

Pull out the kill switch cord so your motor has no spark, lift the warm up lever so she's got plenty of revs, then turn the motor over for ten seconds, this will solve the flooding sucking the fuel through and out, and the raw fuel will clean the plugs.

Put the lanyard back on idle rev's and kick her in the gut's.
Don't be scared to give her up to 1200 rpm if she coughs and farts.
She shouldn't take long to settle down then.

[Chimo]

Hi Smelly

We need to get you wife involved so she can play too!

How about you grab a half 200 litre drum or a big rubbish bin (without rubbish / seaweed etc ) and park the motor in it so that the water level is well and truely above the impeller / cavitation plate. Shove in some planks on some bricks to lift the bin / drum up to get maximum water depth.

When its all stable, secure the hose so it can't fallout when the tap is on. Now fil the bin with water to the top. Turn off the tap.

Now how about pulling the plugs out and inspecting them for crap / carbon bits that could short the plugs and see how wet they are at the same time. Do the four. With them out and the kill switch in the off position turn the motor over a few times to air out the cylinders and blow any gunk / crap out too. Note we haave the leg in water bath so the impeller is in water.

The kill switch usually has a plastic key type of gismo attached to bit of cord, the lanyard, that you atttach to you so when you fall over or out of the boat the motor stops.

When you have done all this put the plugs back in and carefully reinstall the plug leads.

Have a good look at all fittings, cables, levers all around the motor touching each one in turn and wispering kind, encouraging things to them as you go.

Ask you patient, lovely, tolerant, understanding partner and the kids (I don't think you have mentioned the kids but surely you must have some) to also join in this blessing and moment of appreciation of "The Motor" Don't forget the M in L if shes still there too.

Re instal the kill switch so the motor will fire. Turn on the tap.

Put the motor in neutral, prime it a very little. Your in the great southland so you better lift the cold start lever too ( I think it has one of them) and turn the key.

So how was that? was it good for you?

Did it start, run, blow water out the right holes? Can we go boating now?

Cheers

Chimo

PS Maaate, we got to get this going soon.

[Roughasguts]

Well done Dr Phil, I mean chimo.
Yep flog the neighbours bin on rubbish night cut that down and were in buisness.

[Chimo]

Hi RAG

Good to see your on the program.

I think we need to get a few of you southerners moved north where people seem to understand things better!

You can probably get a grant for it too Bugger, weakend and went for the smiley.

Oh Well AGAIN !!!!!!

Cheers

Chimo

PS Has he got the bin / half 44 yet?

[FNQCairns]

Why did it not start up straight away? - gremlins.
These things can just happen it may never do it again, without further info which probably is not important anyway ATM best to say gremlins.

Anytime the horn sounds caution is the best policy, personally I think that now you have water at the exhaust ports you have a functioning pump, but do you have a functioning thermostat and poppets?? or some extra problem in the head with the sensor etc

Consider now a test on the muffs (or in a drum as per chimo), it's important to keep feeling the heads also VERY important to feel and note any difference in temp between the two heads - don't blow this off, you need to know if one and which one is the culprit or if both are, it's an important test but you gotta keep testing them with your hands at a fast idle like 1000rpm max and shut down when/if things just dont seem right.

So to test the pump you have done that and it seems on the surface to be ok, now to test the thermostat and to discount further complicationsyou need to do the above head test with your hands, if all ok in 99% of cases you are good to go with a wary eye on temperature untill you know the popets are functioning ok.

cheers fnq

PS Wayne LOL! , ...... no sequel!

[Chimo]

HI FNQ

Whats a poppet?

Chimo

[FNQCairns]

Hi chimo, those water pressure valves housed with the thermostat.

cheers fnq

[Smelly]

HI all - back from another XMAS fat dinner...

I will cut the large bin up tomorrow and fill it and run it and let u know - if it starts ever again..

WIll that seaweed be clogged further up the leg?

Plugs are brand new. What do i spray plugs with?

Why did'nt the donk start after I let it cool? Surely the carbi was not flooded then?

Spoke to a guy at the ramp today and told him my plight - he thinks it could be cracked heads causing the overheating...(ignoring the seaweed) - ythoughts?

I will continue to feel my heads - as I normally do that at night anyway.. ;-)


Smelly

[Chimo]

FNQ So the poppet is part of the thermostat (need smiley with light globe coming on) that goes in and out to allow water flow or not. I liked "thingo" better now theres no mystery left!

Smelly, can you pull the plugs out and check that there is no crap on the tips that could short them. And while you have em out wipe em with a clean rag after you wash em in petrol.

Seaweed should not have got past the screen.

What about you get on to Virgin Blue and buy FNQ RAG and me tickets to come down for a visit? The only problem is that the other 16000 wouldn't get to read this stuff! and it too b.......... cold down there.

Chimo

Chimo

[FNQCairns]

Smelly certainly possible, even a blown head gasket pressurising the water gallery, people think that the manufacturers were nice enough to include a horn that will sound well before possible damage occurs, they didn't - it's all part of the spare parts strategy and worth millions in parts sales, that is why it's important wherever possible to not let it go to horn and use touch, sometimes there is no option, like on highspeed overheats.

These engines also have a curious problem where they will trap air on first starup, get hot-sometimes go to horn on unsuspecting owners but will then upon restart run perfect. A person can actually hear the thermostat pop open and allow water to flow on these engines, an old fix was to drill an air bleed hole in the thermo. I understand that johnson fixed this problem at a later date with a new thermostat design, of coarse the manufacturers fix was well after all the self styled outboard mechanics were doing the redesign fix for donkeys like in most things mechanical.

Anyway don't discount an airlock of some description and reason, if it does get hot on first startup tommorow let it cool for 10 and try again you may even hear the thermo pop then see extra water exiting the leg, but keep feeling it up

best of luck I think it will all be fine, hope it will be anyway.

cheers fnq

[Smelly]

All,

I don't htink nobody has ansered my question yet:
Why did'nt the donk start first up or even later on after I let it cool?
Surely the carbi was not flooded then?

Smelly

PS - Hope to get a bit of head tonight...

[FNQCairns]

Yeah Chimo they are designed to open at highspeed, typically around the point where water pressure from the leg traveling through has effectivly negated the need for the pump, interstingly the impeller becomes becomes more or less an obstruction to water flow the vanes compress and it spins uselessly.
Makes diagnosing overheats relativly easy when a person knows how it all works and ties in together.

This valve is a good reason never to use gasket goo on an outboard, if you have read through another post here.

Smelly, just gremlins or flooded and oiled - need more data

cheers fnq