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massive flat spot & won't rev
https://ausmini.com/forums/viewtopic.php?f=2&t=787
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Author:  Rupert [ Mon Jun 07, 2004 8:04 am ]
Post subject:  massive flat spot & won't rev

My mate has a rebuilt 1293 that is a bit worked, problem is that it has a massive flatspot when putting your foot down and it seems to die off and won't rev above 5500 rpm.

It only running a 1.5 inch SU (fully rebuilt) at the moment but will swap to twins soon.

Also has a standard 998 non-vacuum adv dizzy.

Ideas?

Author:  minitec [ Mon Jun 07, 2004 8:44 am ]
Post subject: 

I think carb. Get it on a dyno.

Author:  poeee [ Mon Jun 07, 2004 9:12 am ]
Post subject: 

I've just had carbie problems, and it sounds like it could be that.

That dizzy maybe the problem, but i'm no expert when in this area.

Author:  gafmo [ Mon Jun 07, 2004 9:17 am ]
Post subject: 

I'v also had a simmilar problem. I checked everything from the fuel pump to blowing out the HIF44. Then I checked all the Elec Changed the points and condencer. It turned out after fitting the new point they were then closing again. I could not understand it. I would ajust the gap and then the same thing would happen. Thinking They were fine I went onto the next area. Try your points.

Gamfo
In the Hills

Author:  drmini in aust [ Mon Jun 07, 2004 7:24 pm ]
Post subject: 

The reason new points close up is lack of lube on the cam, usually. This wears the points rubbing block.
Smear a little HMP grease on the cam. :wink:

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