Posted by big jt on April 18, 2015 at 11:10:49 from (206.72.54.246):
OK went to get the Planter out of the shed yesterday. One of the items that needed to be moved was my 1977 IH Loadstar with a 446 gas engine. (Yes they had a 446 V8 not the 466 diesal)
Anyway crank and crank which is usual to pump fuel back up. Still no start. Finally check for spark, no go. Put my little LED test light that I made to check a bad pertronix unit and it showed that something in the electronics was not doing it's thing.
Truck has some sort of electronic ignition I am not real familiar with but it is simaliar to the older Fords with a pickup in the distributor and a module on the firewall. NAPA didn't show anything for it and I haven't checked with my Navistar dealer yet.
My question here is. Have any of you dealt with this system and what did you do for parts? Any other diagnostics I am missing here?
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Today's Featured Article - 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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