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Allis 160 Gas Engine Skip - Mid to High RPM
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orangeman View Drop Down
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Joined: 12 Sep 2009
Points: 1855 		Post Options Post Options   Thanks (0) Thanks(0)   Quote orangeman Quote  Post ReplyReply Direct Link To This Post Topic: Allis 160 Gas Engine Skip - Mid to High RPM
    Posted: 24 Jun 2012 at 7:32am
Guys:  Working on cleaning up an AC 160 Gas Power Unit.  

Starts and runs fine on low idle.  Bump it up to mid range and high RPM starts to miss and skip. 

Distributor ignition, new plugs, plug wires, and coil. 

I am guessing ignition timing, or worn bushings in distributor tower.  

Have never encountered this before with an AC engine, any comments appreciated - thank-you Orangeman.
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DougS View Drop Down
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Joined: 03 Nov 2011
Location: Iowa
Points: 2490 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DougS Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jun 2012 at 10:11am
Does it miss under any load, even at low RPM?  If so, it could be a fuel problem.
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orangeman View Drop Down
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Joined: 12 Sep 2009
Points: 1855 		Post Options Post Options   Thanks (0) Thanks(0)   Quote orangeman Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jun 2012 at 10:45am
Doug: I went through the fuel side, has plenty of fuel and carb has been rebuilt.  Power Unit sat inside a heated warehouse and was not exposed to the environment.  Good suggestion though - appreciate it. 
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Burgie View Drop Down
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Joined: 13 Sep 2009
Location: Scottsburg, IN
Points: 1192 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Burgie Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jun 2012 at 11:01am
Try a new set of points and condenser in it.
"Burgie"
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tbstock View Drop Down
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Joined: 19 May 2012
Location: NY
Points: 12 		Post Options Post Options   Thanks (0) Thanks(0)   Quote tbstock Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jun 2012 at 5:11pm
Agree with Burgie.  I just went through the same problem last week with our 180.  after everything we repalaced the condensor and points and now she runs 100%
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AC200Puller View Drop Down
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Joined: 04 Dec 2011
Location: Wisconsin
Points: 774 		Post Options Post Options   Thanks (0) Thanks(0)   Quote AC200Puller Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jun 2012 at 5:22pm
Check for leak in intake manifold.
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