Farm Equipment - Ignition woes on 170

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Ignition woes on 170

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=19914
Printed Date: 08 Feb 2025 at 3:05pm
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Topic: Ignition woes on 170

Posted By: Reindeer
Subject: Ignition woes on 170
Date Posted: 25 Oct 2010 at 11:25am

I've been having a great time for a couple of weeks with my 170. I picked up a new distributor cap and rotor, and when installing them, noticed the #2 plug wire was corroded. Off to buy some plug wires. Put all of the new stuff on, and oddly the tractor would not fire on all cylinders. Worse it was firing on any three, although 2 and 4 were most often out of commission. I started switching wires, without success. Went to Napa and picked up some NGK plugs. Same problem. Messed with wires and plugs for several nites, but no success. Sometimes #4 would be dead, sometimes #2 and occasionally #3.

The tractor was running fine before I fixed it! What the devil was it trying to do to mailto:#!#@!@$#@$ - me!!!! #!#!$#$

Last night I got new points and a condeser and opened up the distributor. The little nut on the points was just a bit loose! I changed the points and condenser, tightened up things and now it runs on all 4 cylinders. I think the mechanical advance might be stuck, so will look at that tonight, but I just about turned my gray hair grayer over this thing. So soon old, so late smart!

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Replies:

Posted By: mlpankey
Date Posted: 25 Oct 2010 at 11:38am

remember the mechanical advance on the delco 111 dizzys should be all in at 800 rpm.

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