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Discussion Starter · #1 ·
Ok Im at an end today! My 1600 in my splitty has me stumped.

The mid range is flat and the engine will only progess up the range with feathering of the accelorator pedal.

When you floor it it gives a roar of induction and not much happends until it kind of catches itself up again. Its driveable and you can still pull 70mph it ticks over on idle. Its just a bit flat more on hills.

At first I thought the dizzy wasnt advancing, it is, checked with a strobe.

Points are fine.

Valves are adjusted fine.


Im gonna clean the carb next, Main jet blocked?

What ya think?
 

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Discussion Starter · #5 ·
You mean disconnecting the vac and revving it? Yes its less advance.


With it connected it goes to around 30 degrees as it should.
 

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Or maybe accelerator pump cct faulty ?

Check it's squirting as it should.

Dave.
 
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