Mariner 15 2 Stroke running too fast!

[LanceB]

Originally Posted by oujakov

It used to be correct, where is leaded fuel from 30 years back would leave the residue inside the engine and it's systems.....but modern fuels are much cleaner and of a higher standard..I guess they wanted to say you have a dirty carb.

Thanks..the main thing for mew was the fact that the engine ran & pumped water Ok (I bought it as 'not running when we tried to start it in the Spring') so was taking a chance on it really.

It's probably in the best place now & at least I proved to myself that it was worth spending a few quid on to get it running properly. I should hopefully either have a Mariner 15 for sale afterwards or an engine for the sea, leaving the Honda 5 for inland?

[oujakov]

So, whats the outcome?

[LanceB]

Originally Posted by oujakov

So, whats the outcome?

When I dropped it off the engineers were on shutdown for the next week, so they should be looking at it this week.

I'm waiting for a phone call or will chase later in the week.

Cheers
Lance

[LanceB]

Well I've valled the engineers & they told me a tale of woe!!

The engine runs when fuel is put into the cylinders after the pugs have been taken out but not just trying to start it normally (as I had found).

The carb needs a sonic clean they say & this is £15 + £190 labour ontop, & then
a carb kit @£60+ !!!! I'm not a happy man!

He also said there is water in the gearbox oil & this could mean all sorts of aditional costs (seals etc)- or maybe just needs the oil changing & keeping an eye on???

I don't know what to make of all of this but have said I will pay the initial look-see fee & pick up the engine again.

Any thoughts??

[oujakov]

Take your time and do it yourself!

[LanceB]

Originally Posted by oujakov

Take your time and do it yourself!

I agree, I think I'm now going to get a CD manual for the engine off ebay & give it a go.

Also been looking around the net & have found someone who will stripdown, clean (sonic etc), rebuild & set the carb if I get it off & send it to them. Tis will cost £33 they say & £7.50 shipping back.

This might be worth considering I recon but the first thing will be to take the carb off I guess & take it from from there!

[LanceB]

I now have the engine back & have ordered a set of workshop manuals on CD..

Not quite sure how to approach the work but I guess I'll wait for the manual to arrive & then see if it tells me what I need to know..

Thanks for all the advise given by all those who posted replies to the thread.

[oujakov]

Don't worry about the water in the gear case,as it is definitely not the reason for the fast idle. Get the basic tune up done first...carb clean, replace spark plugs and lube the throttle cable....and only then move on to more advanced stuff.

[LanceB]

Well I'm a happy man after " one final look at the engine" last weekend

After leaving the engine for the Winter & doing nothing more this year, I agreed with the wife that I'd sell the engine on ebay as soon as we got back from a week away in Devon (nice break - did some sibbing & fishing).

I took it out, put it on the stand & took pictures ready to post it on ebay & then decided to try one last time to see if I could get the engine running again. Well it started OK after a bit but as before, it ran on full revs so I shut it down.

This time I had a look around the carb after a quick read of the manual (a refresher from last years attempts). I remembered that the primer float was stuck so I took it off & disassembled it - finally it was freed up & working OK & put back together again. i tried the engine & it started straight away but was still revving too high.

Why I hadn't noticed it before (or had it register in the brain) but I was thinking of what a carb does & how it works & then Ahha!!!! ...the butterfly was stuck, of course!! this might be it. I freed it off & got it got it springing back correctly & announced that "I might just have cracked it this time !!

I tried it again & sure enough, I had!! ...it ticked over beautifully & revved on command this time. Needless to say, we were very pleased & now, after a bit of tinkering & adjustment + a change of gear oil, it's running great, shifts into forward & revers well & it's ready for the water. So now my original hope of having a good running engine is realised.

Many thanks once again for all those who gave their valuable advise to me last year...my wife now wants to use the Mariner as soon as possible on the sea...Me too!!

[Bigmuz7]

Nice you got it sorted forums have their uses

[LanceB]

Originally Posted by Bigmuz7

Nice you got it sorted forums have their uses

Thanks for that... I wish I'd never taken it to anyone to be looked at now. They clearly didn't check it out properly because otherwise surely they should have spotted the problem almost immediately if they really knew what they were doing??