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Old 30 March 2014, 15:15   #1
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Any reason for this pipe to detach?

First launch of the season, lumpy out of Stonehaven, F4-5, even the RNLI crew said to batten down the hatches before we departed.

Any reason for this fuel pipe to detach. Looks like it comes from number 2 cylinder. I take it it's a return pipe? Had a look out at sea, but we were rolling as it was, and I felt sick (there's a first).

Degreased the engine tray on return, cleaned everything up and attached the pipe with spring clip. Engine is Tohatsu 2-stroke 60hp.

Engine felt bogged down... which I initially put down to a dodgy primer bulb (rubber has gone hard), which I'll need to replace.
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Old 30 March 2014, 15:18   #2
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RNLI on training

Early start for these guys.
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Old 30 March 2014, 15:23   #3
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isn't it the pulse pipe from the crankcase to the fuel pump? I once blew it off my 40 yam on start up, I think the engine backfired & the pipe popped off

I just refitted it put the clip back on & its never happened again

id try putting it back & trying it before you dig too deep

ken
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Old 30 March 2014, 16:50   #4
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Quote:
Originally Posted by beamishken View Post
isn't it the pulse pipe from the crankcase to the fuel pump? I once blew it off my 40 yam on start up, I think the engine backfired & the pipe popped off

I just refitted it put the clip back on & its never happened again

id try putting it back & trying it before you dig too deep

ken
I agree think it runs to the fuel pump on the crankcase.

From memory think it runs behind the throttle lever picturede or does it go through a hole in the crankcase? Had a 70 Tohatsu and can remember the look.
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Old 31 March 2014, 12:42   #5
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Make sure you stick a pipe clamp/jubilee clip on it before you reattach
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Old 31 March 2014, 16:20   #6
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Quote:
Originally Posted by Hightower View Post
Make sure you stick a pipe clamp/jubilee clip on it before you reattach
There's a little Tohatsu spring clip on it, but no where enough tension if it's 'popped off'. I'll look at something a little more substantial? A jubilee clip is too large but I will look to see what's available.

Thanks for all updates.
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Old 08 April 2014, 16:47   #7
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Its an oil recirculation hose. They do pop off from time to time. Its just a push fit on, maybe put a small cable tie on. usually the get blown off if you have a poor running problem when the engine back fires slightly (sneezing at tick over is the most common)
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Old 08 April 2014, 18:57   #8
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Thank you Turbo. There was a smell of fuel too. Is that just 2-stroke oil in the pipe, not fuel?

I've ordered a new Quicksilver primer bulb as the current one has gone hard and can't be relied upon.

It had new new fuel, tank vented, etc. I may strip carbs again to be on the safe side. This was the first trip out since fitting new cylinder head gasket. Head is fine, no leaks. I'll put in new sparks too.

Degreasing engine tray, as finding future leaks is difficult if it's like a sump!
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