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Post Info TOPIC: Decompressor plug leak


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cylinder head decompressor plug
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i cannot open pic on scotts made plug i have logged in it says forbidden you do not have permission also i cannot go to previous page with arrow on left top i have to come out of forum & sign in again this is on brians removal of cyl head plug



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RE: cylinder head plug
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Sometimes the pictures get lost in the midst of the internet after a while..

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Pete. South Somerset, England.



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why cannot i go back a page i have to go out & sign back in to veiw others all the time many thanks

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Might be something to do with your browser

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Pete. South Somerset, England.

pug


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RE: cylinder head decompressor plug
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If you want to make one bit hear on it i only did it as i Im a right tight old bastard and have the gear an spair time to do it if i wanted a 2nd one i would just get one off Brian.


ttr250.activeboard.com/t60334180/job-i-have-been-putting-off/

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Super Guru

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What is it you are trying to find out Johnny?

The guide to the installation of the rubber original decompressor plugs is here

To buy a rubber plug see here

For the guide to installation of the aluminium plugs see here

To buy the aluminium plugs see here 

Scott gave up making the aluminium plugs and we now get them made up by a local Exeter engineering firm.

Does that help?

Cheers

Brian



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cant veiw scotts made plug also cant arrow back a page

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You can see the one that Martyn(pug) home made for himself though.

As for not being able to go back a page, perhaps your internet browser is playing up, I much prefer to use mozilla firefox internet browser instead..

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Pete. South Somerset, England.



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JOHNYBOY wrote:

cant veiw scotts made plug also cant arrow back a page


 There was a broken link on the page which I have now updated wink

Everything working fine at this end, back button, etc., so maybe your browser needs a fix as Pete suggests?



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pug


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Link to the plug I made
ttr250.activeboard.com/t60334180/job-i-have-been-putting-off/
Will say it has been acting up of late it will stay oil tight for a week or three then all of a sudden it will look like a damp oil patch round it will re-appear I wash the bike every week as it's used 5-6 days a week when winter comes round I'm going to pull it out an make a mark 2 with a compression O ring on the back face of the plug that can be pushed up to the back face an a small O ring on the shaft at the back as well

Pug

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Stripped oil cover bolt/Decompressor plug
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Hello all, this is my first real post besides my introduction. 

This is on a 2002 blue 250

I was putting my oil filter cover back on after an oil change and the bottom bolt kept spinning. I removed the bolt and found metal shavings on the threads. I cleaned it and tried it again, but no go, it won't tighten. I talked to a local Yamaha guru and he said he has seen this in WR's and YZ's. I'm going to let him take it, he said he'll try and clean up the threads. 

Is this a common problem? Did I maybe over tighten it last time I changed the oil?

While he's in there, should I replace anything or have him check anything else?

On another oily note, I'm pretty sure my decompressor plug is leaking, and I saw that nifty replacement plug that is made for totallyttr. Are they imported to the US, or do I need to order abroad? I will probably order a stock plug until I can find more parts that I might want from totallyttr.  

Thanks, Jim



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Welcome to the forum Jim.
It is fairly common for the threads to foul up with repeated use and a bit of overtightening. It's easily done - 10Nm of torque is not very much. It should be repairable with a helicoil insert - I doubt the existing threads will be saveable.
Steve at Totallyttrs will I'm sure ship to the States. I expect he'll be along here soon. The little bolt on the side by the decomp plug can leak too. The threads are too weak to properly tighten it against the copper washer. Take it out and refit with plenty of threadlock or a good flange sealant to hold back the oil. (but don't overtighten it!)
Ride safe,
Simon.

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Yep a common problemcry

Hopefully your bolts will be fine and you can re use them, seem to have a few requests for them lately.

As Simon advised get the threads heli coiled and you should be good to go and be careful following Simons advice on the decompressor bolts too, as they can be striped easily.

We are the only people to manufacture the aluminium plug, happy to postsmile

Good luck with the work and keep us all updated.

Steve

 



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Thanks for the info, it's reassuring to hear I probably won't need a new clutch cover.

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striped 6mm bolt.... retap it for 1/4" unc... no drilling just run the tap straight in the hole.



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This bolt is different from the others, it's also a drain bolt and is only threaded at the end. I have a new mechanic that is going to pick up the bike today and look at it.
He has good recommendations from guys in our local club ( San Diego Adventure Riders ).


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Decompressor plug leak
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Sorry that there are already many topics about this leak, but I just wanted to ask a question about a possible easy fix to it

Like others have had, theres oil coming from the plug here 

IMG1007.JPG

Im thinking about buying the aluminium plug from totallyttrs and that will solve it, but im quite broke at the moment and was wondering if anyone has any thoughts about cleaning around it as much as possible and get rid of all oil around the area, and then use some JB-Weld that i already have and literally just put that around the whole plug, or just the edges of the plug where oil is seeping from. The only issue thats stopping me from just trying this, is that if it fails to work and oil still comes out, then it will be pretty impossible to then get the plug out and put a replacement aluminium one in.

Any thoughts appreciated

Cheers



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Super Guru

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I haven't heard of anyone trying JB Weld so maybe you can try it on behalf of the TTR250 community wink

My guess is that it will be difficult to get an oil free surface for the JB Weld to bond to. 

Let us know how you get on if you try it!

Brian

PS I hope you don't mind me merging a few stray threads along similar lines into yours....



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Moo


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The aluminium plug replacement on my Raid seems to have started leaking again.. Gunna have to give it a clean and see if it actually is coming from there..

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Malcolm, Northamptonshire. West Anglia TRF

1996 TTR 250 Raid

2005 TTR 250 Bluey



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Moo wrote:

The aluminium plug replacement on my Raid seems to have started leaking again.. Gunna have to give it a clean and see if it actually is coming from there..


Interested in this Malcom, I see you bought it in November 2015, was it the early type or the ones that we do now?

Steve 



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The old rubber plug on my 325 cylinder head finally gave up the ghost and started to leak. The giveaway was a new oil mark on the stand and a smell of burning oil on a run.

I think I am on a roll today as it look literally 5 minutes to fit one of Steve's new aluminium plugs biggrin

Tools needed:- hammer, centre punch and 10mm socket for the bolt.

Replacing plug - tools needed.JPG

 

It is important not to scratch or otherwise damage the housing else the new plug won't seal. Mine came out cleanly after punching a hole in its centre and gently levering it from different directions.

Replacing plug - old plug.JPG

 

New plug looking good!

Replacing plug - new plug.JPG



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The ally plug on mine has also started to weep. Its done about 6000km, and coming from the lower right side, there's not enough mess to worry me but it could end up annoying some people who take better care of there ttr than i do!

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Super Guru

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It would be a good idea to remove the plug and inspect the O ring, before it gets to messy. That's a couple that have leaked now, will look into the O rings. Is the surface it sits in perfect with no damage? These can easily be scored when removing the old rubber plug.



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Ahh okay, i imagine thats what has happened then. I wont tiuch it unless it gets bad for now, thanks for the explanation

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Moo


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Mine did exactly the same on the Raid Dan. New plug started weeping. Steve sent out a new o ring which sorted it.

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Malcolm, Northamptonshire. West Anglia TRF

1996 TTR 250 Raid

2005 TTR 250 Bluey



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Mine weeped, I just used a punch and knocked it in some more. Hopefully it will last a while.

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