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Author: Subject: 1600 Flat spot
Monty2556

posted on 1/10/14 at 08:12 PM Reply With Quote
1600 Flat spot

Just changed my 1300 xflow for a 1600 xflow. The 1300 ticked over and ran fine with no problems and I've used the same distributor and carb for the 1600 but when I blip the throttle it dies. I know it could many things but is there anything obvious that's different between the engines (apart from size!!).
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rusty nuts

posted on 1/10/14 at 08:18 PM Reply With Quote
jet sizes will need changing , has the ignition timing been set correctly? have the valve clearances been set , too tight will cause all sorts of running problems. Air leak?
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Trollyjack

posted on 1/10/14 at 09:16 PM Reply With Quote
Wrong Carb
if you had a twin choke Webber it will have been a 32 dgv
a 1600 will need to be a 32/36 which has larger venturies.





TrollyJack

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Monty2556

posted on 1/10/14 at 10:49 PM Reply With Quote
Thanks for the replies. Ignition timing has been set at 10 BTDC using a strobe without the vacuum attached. Hope that's right. Valve clearances were set, the engine run and re-set so they should be OK. Not sure about an air leak. The original carb is a single choke but I have a 32/36 which I was intending on fitting once I'd got the engine in and running. Presumably I need to fit this carb to get it performing correctly.
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britishtrident

posted on 2/10/14 at 07:04 AM Reply With Quote
Have you checked the accelerator pump is actually squirting?





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Monty2556

posted on 2/10/14 at 05:06 PM Reply With Quote
Accelerator pump is working. However, I've changed to carb to the 32/36 but it won't run at all now. Accelerator pump is working. Just have to keep trying.
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