Author Topic: TM28 flatslides  (Read 171 times)

0 Members and 1 Guest are viewing this topic.

Offline GAZZATT2

  • Moderators
  • Port Hacker
  • *
  • Posts: 4731
  • Age: 60
TM28 flatslides
« on: September 21, 2021, 08:47:29 PM »
I have a pair of these on a 400F
I have a mystery petrol leak
does not leak if the petrol tap is turned on
or if started up and left to idle
I have to ride about 1 mile and it will be dripping out of the crankcase drain hole
I have touched he bottom of the carburettors they are dry
have tried to look  with mirrors
all overflows and vents have pipes that go to the swinging arm area so none of them
needs choke to run better
any ideas ?
XSR900  350lc 400F 400f special 2nd 400F special
it did look good in a photo lance ?
Picture026" border="0

Offline betty foRD

  • Peter
  • Club Member
  • Port Hacker
  • Posts: 2922
  • Age: 58
  • Location: Faringdon (Oxon)
Re: TM28 flatslides
« Reply #1 on: September 22, 2021, 02:52:08 PM »
A conundrum….

So…not the obvious….

Order of likenesses….so not a leak per se, just fuel getting into the top of the cases.

First couple of thoughts…

What air filter are you running… might be stand-off getting Chucked back out of the carb that’s then collecting and dripping down.

Base gasket leak? Unlikely but still need to rule out.

Think what I’d do is put a rag or kitchen roll in there to find out where it first drips or is ejected from….cause anything onto the top of the cases will also find it’s way eventually to the drain hole….

Rev 'em till they rattle

Offline GAZZATT2

  • Moderators
  • Port Hacker
  • *
  • Posts: 4731
  • Age: 60
Re: TM28 flatslides
« Reply #2 on: September 22, 2021, 06:28:12 PM »
Foam pods
There are dry
It’s clean petrol
sits on top of case

No leaks from base gaskets or Reed block
The float chambers sit lower to the cases

Hard to put something there and not lose it will riding
Might try cardboard in a u shaped and tape to covers and hope it doesn’t move to much
XSR900  350lc 400F 400f special 2nd 400F special
it did look good in a photo lance ?
Picture026" border="0

Offline pidjones

  • Club Member
  • Port Hacker
  • Posts: 502
  • Age: 69
  • Location: East TN
Re: TM28 flatslides
« Reply #3 on: September 22, 2021, 07:06:17 PM »
Talc ought to cling well enough. Look for it to wet from the leak. UV in a dark garage might show it. Gas will often glow in UV.
"Love 'em all... Let GOD sort 'em out!"