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Post by scooter on Oct 30, 2018 19:43:34 GMT 1
getting the bike ready for its mot and put petrol in the tank and petrol is pissing out the fuel tap bolt holes its on a freshly painted tank with a refurb kit for the tap I installed the tap then a plastic washer then a steel washer then the bolt is this correct
cheers
scooter
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Post by midlifecrisisrd on Oct 30, 2018 19:46:14 GMT 1
The proper washers are like rubber coated and still available from new
Steve
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Post by scooter on Oct 30, 2018 20:15:11 GMT 1
ok mine where hard plastic
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Post by marrcel on Oct 30, 2018 20:29:22 GMT 1
Leave the steel washer. And try again😉
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Post by scooter on Oct 30, 2018 20:57:40 GMT 1
done that and the plastic ones just broke up back to square one
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Post by looey on Oct 30, 2018 21:02:19 GMT 1
How you've installed it, the fuel will come down the thread and leak out from between the steel washer and bolt head.
Like has been said, loose the steel washer.
I always use a red fibre washer and bolt, never had any leaks.
If you're bolt head is chewing up the washer, use allen bolts
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Post by stusco on Oct 30, 2018 21:13:08 GMT 1
As Steve says buy the correct screws it will seal first time ,I think most of us have tried different methods but the original is the best
norbo sells them
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Post by earthman on Oct 30, 2018 21:28:01 GMT 1
I used some hydraulic seal fluid on the screw treads, that stopped the petrol coming down them, I never knew at the time that you could still buy those impregnated screws from Yamaha.
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Post by alistair64 on Jan 2, 2019 23:26:27 GMT 1
Apologies for resurrecting an old thread, but I'm having ongoing problems with petrol leaking down the threads.
I've tried Threebond 1184 down the screw threads with fibre washers, but still no luck.
However, still using the steel washers, so maybe that's the answer?
To summarise, the best method is Philips screws with no steel washers and standard fibre washers from Norbo, or is anything else needed (like something else to seal the threads)?
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Post by looey on Jan 2, 2019 23:33:37 GMT 1
Are you sure it's leaking down the threads and not just dripping off the screw heads as they are the lowest point to drip from ?.
A Philips screw or Allen bolt with just a fibre washer is all that's needed to make a good seal.
If you introduce a metal to metal contact point (i.e. with a metal washer to screw head or tap body), the fuel WILL leaks from between those 2 faces.
Good luck sorting it.
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Post by scooter on Jan 3, 2019 3:37:38 GMT 1
I bought the proper tap fitting kit from norbo in the end and that fixed it
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Post by 1966baz on Jan 3, 2019 10:44:21 GMT 1
getting the bike ready for its mot and put petrol in the tank and petrol is pissing out the fuel tap bolt holes its on a freshly painted tank with a refurb kit for the tap I installed the tap then a plastic washer then a steel washer then the bolt is this correct cheers scooter I use Hylomar fuel resistant gasket sealant which seems to work.  |
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Post by alistair64 on Jan 3, 2019 21:32:48 GMT 1
Thanks guys - will get rid of the metal washers and try Blue Hylomar as I've already fitted a new fuel tap kit.
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Post by looey on Jan 3, 2019 22:00:40 GMT 1
I'd try just loosing the metal washer first. You shouldn't be needing to put gasket goo anywhere unless something's not right. I have in the past put a light smear of Hylomar on the tank face where the tap o-ring seals to the tank when the surface wasn't great, which did work   |
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Post by billyboy on Jan 3, 2019 22:30:13 GMT 1
Copper washers work for me never had one leak .
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Post by mattybeckett on Jan 4, 2019 0:02:28 GMT 1
getting the bike ready for its mot and put petrol in the tank and petrol is pissing out the fuel tap bolt holes its on a freshly painted tank with a refurb kit for the tap I installed the tap then a plastic washer then a steel washer then the bolt is this correct cheers scooter I use Hylomar fuel resistant gasket sealant which seems to work. Exactly the same as I used on mine without any issues 👍 |
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Post by 4l04ever on Jan 4, 2019 19:27:02 GMT 1
Copper washers work for me never had one leak . Same here. Copper washers are the future! :-) |
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Post by alistair64 on Jan 4, 2019 21:03:49 GMT 1
Copper washers work for me never had one leak . Same here. Copper washers are the future! :-) Interesting, but quite surprising. I've always found copper washers work well when they are torqued up, like under the M6 coolant drain bolts on the barrels of a Powervalve. However, when all you are doing is screwing Philips screws tight with a screwdriver, I haven't found that you can get enough tightness to actually compress the copper. Fibre washers do seal in these circumstances. I know the answer would be to use allen bolts and crank them up, but want to keep the bike fairly standard-looking in terms of what fasteners are used. |
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Post by 4l04ever on Jan 5, 2019 0:15:07 GMT 1
Same here. Copper washers are the future! :-) Interesting, but quite surprising. I've always found copper washers work well when they are torqued up, like under the M6 coolant drain bolts on the barrels of a Powervalve. However, when all you are doing is screwing Philips screws tight with a screwdriver, I haven't found that you can get enough tightness to actually compress the copper. Fibre washers do seal in these circumstances. I know the answer would be to use allen bolts and crank them up, but want to keep the bike fairly standard-looking in terms of what fasteners are used. I always change to allen bolts and use the copper washers. Never had a problem with this combination. Otherwise, buy new screws and washers from Mr Yamaha if still available. |
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Post by steven on Jan 5, 2019 12:51:58 GMT 1
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Post by soulie26 on Jan 5, 2019 16:25:17 GMT 1
Useful info - hope you don’t mind me adding to your post but I’ve just taken my petrol tap out of my N2 and awaiting new rubber seal and fibre washers before reassembly-Plan to use same bolts but tank surface isnt perfect - mate thinks new rubber seal should infill any irregularities but suggestions welcomed ie rub down and repaint, gasket sealant on new seal, tank sealant on screw thread. I’m newish to the forum. Can start new thread if you think this would be helpful and upload photo once I find out how to?
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Post by rigga on Jan 5, 2019 16:35:55 GMT 1
O rings on the bolts stopped my leak
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Post by reggieperrin on Jan 5, 2019 17:08:43 GMT 1
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Post by oldbritguy on Jan 5, 2019 17:28:13 GMT 1
+1 for std fitting screws and fibre washers.
No problems since fitted and unlikely to manage to over-tighten using just a screwdriver
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Post by looey on Jan 5, 2019 17:35:57 GMT 1
Yep, I wouldn't over-complicate things.
If it leaks with a fibre washer and either standard screws or Allen bolts then something else is wrong.
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Post by steven on Jan 6, 2019 3:03:02 GMT 1
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Post by marrcel on Jan 6, 2019 9:33:10 GMT 1
If the surface of the tank is a bit rusty. Then take 800grid sandpaper to make it smooth where the seal hits the tank.
Before installing the petc**k i used a bit clear coat to add rust protection. Not to much dough.
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Post by marrcel on Jan 6, 2019 9:34:09 GMT 1
Who placed the ** ?
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Post by jon on Jan 6, 2019 10:46:04 GMT 1
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Post by marrcel on Jan 6, 2019 21:23:39 GMT 1
May be better anyway. Sorry i am just a stupid Dutchman that thought he learned some english at this forum. 😬
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