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Old 05-21-2011, 03:34 PM   #1
cpisani70@aol.com
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Ignition timing ?

Everything was going along just fine today I had a successful maiden voyage, then the next short ride was a flop. I got her home it will idle fine but has no power at all. I put a new fuel filter but it is still the same I am sure the timing is off and was wondering what the timing for a 402 should be any other help would be great! The truck is all stock . I here that those original carbs are no good but it seemed fine up until today
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Old 05-21-2011, 03:46 PM   #2
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Re: Ignition timing ?

If it helps at all if it sits for a few minutes and I start it , it runs decent until I start driving then I lose power, starting to think I have a carb problem idk
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Old 05-21-2011, 04:53 PM   #3
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Re: Ignition timing ?

A new filter?? An inline type or the one in the carb inlet.
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Old 05-21-2011, 06:03 PM   #4
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Re: Ignition timing ?

sounds like it's running on the fuel in the bowl when you start up then as you drive, the fuel doesn't keep up with the demand-check all filters-check fuel pump-is the tank getting vented? How does the fuel line look from the tank to the carb-any flat spots or crimped hoses or lines?
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Old 05-21-2011, 07:59 PM   #5
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Re: Ignition timing ?

The filter is the one in the carb no in line filter the fuel pump is brand new all the lines look good no kinks . What is the vent issue my 68 only has one line coming from the tank so I never thought of that what do I look for? In the meantime cause I can never sit still I took the carb all apart and found a lot of junk in the bowl this was my first go at something like that but I figured the only thing I would want in the bowl was just clean fuel?
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Old 05-21-2011, 11:09 PM   #6
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Re: Ignition timing ?

Is the filter in correctly. IIRC the hole in the filter body is towards the fuel pump. and there should be a spring in there too. Sounds like it's running out of fuel.
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Old 05-22-2011, 10:00 AM   #7
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Re: Ignition timing ?

You need to put an inline filter between the tank & pump. That trash can get in the fuel pump vales & cause a loss of pressure.
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