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Ingersoll 446 Spark Problem

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#1 bhardie OFFLINE  

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Posted September 09, 2013 - 01:52 PM

I finally got the 446 started up this weekend after about 4 years. Last time it had run, it was missing badly and surging. I put new plugs in, fresh gas, seafoam and got it started. It ran rough initially and after a few treatments of carburetor cleaner it began to run so well that I drove it around for about 30 minutes. Parked it outside and it sat for the afternoon. Went back to start it and put it away a few hours later and nothing. Not getting spark at the plugs. Next morning tried again and got spark during one crank. Put the plug back in and nothing.


So looking for ideas on suspects for this intermitent spark. Thanks in advance.


Also looking for any input on how this seat switch should be wired. It was like this  (see picture)  when I got it.

446 seat switch.JPG



#2 jms180 OFFLINE  



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Posted September 09, 2013 - 03:52 PM

if it has points I would check the points and condenser.
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#3 boyscout862 ONLINE  

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Posted September 09, 2013 - 03:57 PM

Check for the manual in our manuals section. Good Luck, Rick

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#4 John@Reliable OFFLINE  


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Posted September 09, 2013 - 05:16 PM

Bad ground, loose/ corroded wiring/connections ,coil, points, etc. The most important thing about Case in the serial number so you can look at the right repair, owners, and parts manual. I would find the right manual and go thru wiring A to B to C to D etc, if not done like this it will come back sooner or later. The switch is also listed the the wiring schematic and missing piece in the parts manual. Defeating a safety device is never a good thing to do.  

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Posted September 09, 2013 - 05:37 PM

I'd would start with verifying power to the coil in start position. Then condensor and points.

Like advised above, grounds and safety switches can really mess a guy up too.
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