200 CID carb issues (Autolite 1100) - Mustang Evolution

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Old 02-24-2014, 09:52 AM   #1
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200 CID carb issues (Autolite 1100)

I have a 1965 Convertible with the 6cyl 200 CID. The engine is completely rebuilt. In fact everything from the firewall forward is brand new. It has an HUI distributor and a mild performance cam for additional low end torque. I had the Autolite 1100 professionally rebuilt by folks in the old car biz (unfortunately, not a Pony Carb rebuild). I can't get this car to run smoothly. It cuts out, dies when you put it in gear, idles rough, etc. I've adjusted the carb and timing till I'm blue in the face. I've checked the valve adjustment three times. The gas tank is new and the gas lines are clean. My fuel pressure is 8lbs with a fuel pressure regulator holding it at 4.5 lbs.

This is my 19th old Mustang, but my first 6 cyl. I've always avoided them. Any ideas out there?!?
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Old 02-24-2014, 07:20 PM   #2
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Do you have power brakes?
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Old 02-24-2014, 08:47 PM   #3
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No power anything. I have good vacuum to the distributor.
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Old 02-25-2014, 01:43 AM   #4
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Id try to adjust the a/f so more fuel goes in i was just having the same problem its just the crappy intake design
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Old 02-25-2014, 01:46 AM   #5
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It was running rich. That led to my discovery that the fuel pump was sending too much pressure.
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Old 02-25-2014, 01:48 AM   #6
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Hmm did you set the timing?
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Old 02-25-2014, 01:52 AM   #7
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It's been set and reset and reset. On an auto the manuals say to start with12 deg BTDC, which is too much. It runs, just sputters and misses. New cables and plugs (properly gapped).
I think this is a carb issue. But other than idle speed and lean adjustment, there's not much you can do on the 1100.
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Old 02-25-2014, 02:06 AM   #8
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Im running 12 degrees and its running fine my car has always ran lean i have a holley though
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Old 02-25-2014, 08:03 AM   #9
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Go to the website for Classic Inlines and read up on the Load -o-matic distributor. Sounds like you are running original carb with aftermarket distributor. Old 1100 sends a modified vacuum signal to the distributor.

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Old 02-25-2014, 08:50 AM   #10
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I've been a few rounds with Classic Inlines already. I've blocked off the spark arrestor port as they've instructed. The dist is running off ported vacuum like it's supposed to. And, the vacuum wouldn't effect the idle of the engine, but more the advance of the dist during acceleration. The DUI is a centrifugal advance, rather than a vacuum advance like the original.
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Old 02-25-2014, 09:28 PM   #11
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Have you tried setting at factory timing?
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