Leaking fuel tap

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IanH

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Got an old two stroke Yam 4hp longshaft. There is a slight leak of fuel which appears to be coming from the fuel tap. Only a slow drip but enough that the small internal tank will probably empty over the course of a couple of weeks. Is this easy to fix? Are there any quick and dirty bodges or shoudl I try to replace the tap?

Any ideas suggestions gratefully received.

Thanks

Ian
 
IanH said:
Got an old two stroke Yam 4hp longshaft. There is a slight leak of fuel which appears to be coming from the fuel tap. Only a slow drip but enough that the small internal tank will probably empty over the course of a couple of weeks. Is this easy to fix? Are there any quick and dirty bodges or shoudl I try to replace the tap?

Any ideas suggestions gratefully received.

Thanks

Ian
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Difficult to find full details without knowing the year model but as far as I know the taps are not serviceable.

Depending on what model a replacement will probably be in the range £20 - £50
Worth therefore having a look to see if anything can be done with it.
 
had the same problem with the fuel tap on my volvo 2001. Local plumbers merchant sold a replacement for a couple of quid:D
 
PabloPicasso said:
had the same problem with the fuel tap on my volvo 2001. Local plumbers merchant sold a replacement for a couple of quid:D
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The diesel fuel installation for an inboard engine is not quite the same as a small outboard, but if your plumbers' merchant can supply fuel taps to fit small Yamaha outboards for £2 you had better tell us his name etc.
Remember it will have an integral filter
 
Vic

Hi Vic,

thanks for the reply. Guess I'll have to try to source a replacement along with looking for a remote tank and line.

Ta again.

Ian
 
Had a motorbike with the same problem. Dismantle the tap, clean it up and coat the moving internals lightly with grease or vaseline.

I did not expect it to work, but it did, and the tap never leaked again! Tip came from a motorcycle mechanic.
 
IanH said:
Hi Vic,

thanks for the reply. Guess I'll have to try to source a replacement along with looking for a remote tank and line.

Ta again.

Ian
Click to expand...

Yours is one that can run from an internal tank or a remote tank?

No problem finding tanks, fuel lines, and connectors.
Don't scrimp on quality of connector. Get one that's a poor fit and you can get air drawn in.
 
VicS said:
Yours is one that can run from an internal tank or a remote tank?
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Yes it is - is that surprising? To be honest it may at some time have been modified by either a well known member of these fora or possibly his brother and if not then the true owner who has given/loaned it to me on a long term basis. All a long story and better for scuttlebut when I finally get around to writing up my tales of purchase and delivery.
 
IanH said:
Got an old two stroke Yam 4hp longshaft. There is a slight leak of fuel which appears to be coming from the fuel tap. Only a slow drip but enough that the small internal tank will probably empty over the course of a couple of weeks. Is this easy to fix? Are there any quick and dirty bodges or shoudl I try to replace the tap?

Any ideas suggestions gratefully received.

Thanks

Ian
Click to expand...

Got the same problem with my 5hp Mercury.
I stripped the old tap but the internals are chewed up so its not repairable. A new tap is about £50, so for the time being I just replaced the tap with a shoprt length of fuel pipe and in line filter. Then when leaving the motor I have a small screw clamp that use to squeeze and seal the pipe.
Alternatively there are loads of low cost taps on eBay, you might find something suitable here - http://shop.ebay.co.uk/i.html?_nkw=...e+clamp&_osacat=0&_trksid=p3286.c0.m270.l1313
 
Yes it is - is that surprising?
Click to expand...
Not particularly esp around that size. Large engines have remote tanks small ones mostly have integral tanks. Around 4 HP it could be one or the other or like yours have the facility to run on either.
 
Just tidied up a Yam 2A, no fuel tap. So I got one from the local garden equipement place for €5. Fitted a treat and with a drill and rasp, the handle comes out of the shroud looking is if is original. Well pleased.
 
I bought a fuel tap for my Mariner recently and it was around £60. I then later added the external fuel gubbins which would have cost £150 separately. I discovered that there was a kit for £80 which included all of the fuel line assembly including taps, valves, filter etc so may be worth asking around in case there is one for your engine. Although you already have the external connector it may be worth the extra for all of the spares.

If you're going external only then you can "rewire" the system without the tap since (on mine at least) the external route bypasses this anyway, so if you don't plan to use the internal tank then the tap is unnecessary.
Cheers
Dave
 
I don't know if this will be of any use in the future, but I had the same problem and found that a Hilka male airline fitting (£1.55 for two!) perfect as a bodge. As I use it every day, I'm not too bothered about not having a tap and 6mm fuel pipe goes straight to the carb. I will put an in line filter in to replace the old one that was built in to the old fitting. Happy boating, Shaun.
 
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