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Re: firing sequence ford 8n, side mount
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Posted by Ron on June 23, 2004 at 17:14:50 from (69.179.4.15):
In Reply to: firing sequence ford 8n, side mount posted by mattu on June 23, 2004 at 16:29:54:
If the specs say 1243 that's what it it. Are you sure you have the correct distributor rotation? Did you actually look at it? Are you sure you have the distribution correctly rough timed... rotor pointing at #1 on the cap when both valves on #1 are closed (piston at TDC)? Are you sure you have the points set correctly? Not knowing the history of the engine... "backfiring" is a meaningless term. Is it an intake backfire or exhaust backfire? They have different causes. Did you fool with the carburetor at all? Have you pulled the plugs to see if they are getting wet with gas? Have you done a compression test? Did you fool with the cam/valve timing? Is the valve lash set correctly? Engines are pretty simple beasts. All they need is compression, a properly timed valve train, a properly timed spark, and fuel. As far as fuel goes, the righer the better until you can get it to run then you can play with mixture but if you start it too lean you'll be putting pistons in it.
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Engine Valves - Some Helpful Information - by Staff. Intake - On the intake stroke the piston moves doward, sucking in carburized fuel through the open intake valve. Exhaust valve is closed. Compression - With both the intake and exhaust valves closed, the pistons upward stroke compresses or squeezes the fuel into the combustion chamber. Firing - Ignited by the spark, the compressed fuel explodes and forces the piston downward on its power stroke. Intake and exhaust valves are closed. Exhaust valves and seats are exp
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