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Old 04-09-2019, 06:39 AM   #1 (permalink)
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Default Timing on a 1.3 liter-Need Help

I recently replaced the factory carb with a Weber 32/36 E-Choke and added a header.

Do I need to advance the timing? It is getting not so good mileage now and smells like fuel. It runs and idles fine.

Ant recommendations appreciated.
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Old 04-09-2019, 08:14 AM   #2 (permalink)
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There should be no need to change the timing, however, the smell of fuel and poor milage sounds like it's running rich - are you using the OEM fuel pump?
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Old 04-09-2019, 11:39 AM   #3 (permalink)
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No changed to a Holley 12-426 Mighty Mite pump. 25 GPH 1.5-4 PSI.
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Old 04-09-2019, 02:09 PM   #4 (permalink)
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have you checked your float level and the rest of your carb settings? fuel smell is a good indication of running rich. Idle circuit will not be operating when driving normally, so its very possible its over fuelling at road speeds.
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Old 04-09-2019, 05:44 PM   #5 (permalink)
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How is that Holley plumbed - is there a return line to the tank?

You're running a pump rated for 300 hp, on an engine with less than 100 hp, so a lot more volume than is required - with most pumps pressure & flow are inversely proportional so as you restrict flow pressure increases, and the webers are known to run rich with higher pressures.

You may need to add a fuel pressure regulator and get the pressure down to around 1.5psi
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