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The TTR250 FAQ web pages -> TTR250 -> Carb stuff -> When fuel is switched to the off position. NO fuel should leak right?
Post Info TOPIC: When fuel is switched to the off position. NO fuel should leak right?
z1g


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When fuel is switched to the off position. NO fuel should leak right?
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HI all,

Chasing up a fuel leak.

Have not had time to pull bits and pieces off the bike.... but.

I have decided to run inline fuel filter *crazy kid*

Put a brand new one (filter) on tonight, and noticed that even when fuel tap(peac o c k) was in the off position, fuel was coming out.

I would not say, full flow, but much more than i thought should come out, in fact i assumed NOTHING should flow out.

It was a constant slow flow.

Does this seem right? Common sense to me suggests this is wrong.

Bike sat for about 24hrs, had about 50ml-100ml leak overnight into container. Edit: was a bit over zealous with measurements, prob more like 10ml-50ml really now that i looked at it..

Also bought some new oil as planning on doing an oil change.... but bugger was in a hurry to get home got the right viscosity, but turns out its pure mineral oil. (Should have guessed based on price). It's a 20w50. Manual says 10w30, or 20w40 synth. The bloke looked it up in THE BOOK and my yr, model was suggested that this mineral 20w50 was good to go???

I now this opens massive debates about synth vs mineral. I have only ever used syth in my cars. And vauguely remember seeing a vid on why syth is better. Watched a vid on ttr250 oil change, and the guy suggests a semi synth yamalube 20w40

As always thanks for you're imput.

Best 

Z



-- Edited by z1g on Tuesday 1st of May 2018 11:36:00 AM

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TTRfan


Super Guru

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I am pretty sure that your tap is leaking. The rubber seal disintegrates over time. You need a kit like this http://totallyttrs.com/epages/699105d9-e4cc-4b32-b236-84e72cd67f84.sf/en_GB/?ObjectPath=/Shops/699105d9-e4cc-4b32-b236-84e72cd67f84/Products/TTR-0253

I am sure your mineral oil will be fine but, normally, it is only used to run in a rebore as it allows more friction during the bedding in process. As I said in a recent thread, I prefer semi-synthetic.

Brian



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z1g


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Thanks brian, i just read that thread. Will change over oil i bought. Many thanks (as always)
Z

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z1g


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Posts: 117
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Just putting it out there, been a few days since put on new fuel line , inline fuel filter, plus fuel line clips..been for a FEW quick squirts around block.  (After work) Seem extremely slow leak now. Very little in container.... but still something.


I am taking on brians advice, and will replace o-ring in fuel tap. Or replace the lot.
{Just my experince being a total noob}
Best

Z



-- Edited by z1g on Thursday 3rd of May 2018 12:23:37 PM

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