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massive flat spot & won't rev

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Rupert

Post subject: massive flat spot & won't rev

Posted: Mon Jun 07, 2004 8:04 am

848cc

Joined: Tue May 25, 2004 8:07 am
Posts: 188
Location: Cordalba, Queensland

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?

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minitec

Post subject:

Posted: Mon Jun 07, 2004 8:44 am

848cc

Joined: Wed Apr 07, 2004 9:26 am
Posts: 164
Location: Sydney

I think carb. Get it on a dyno.

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poeee

Post subject:

Posted: Mon Jun 07, 2004 9:12 am

1360cc

Joined: Tue Mar 16, 2004 8:55 am
Posts: 11264
Location: Geelong, Victoria

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.

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gafmo

Post subject:

Posted: Mon Jun 07, 2004 9:17 am

the King of Bling

Joined: Thu Jun 03, 2004 11:11 pm
Posts: 19858
Location: Baulkham Hills

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

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Stop Licking the Dog...I Don't Care Who Started It

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drmini in aust

Post subject:

Posted: Mon Jun 07, 2004 7:24 pm

religious status

Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39751
Location: near Baulkham Hills, NSW

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:

_________________
DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:

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