[AJD] B timing solved

[wjohnson]

Ok Nick, If you got a zero, you dont have a coil.
Merle
-----Original Message-----
From: nick_solomon at infostations.com
To: "Antique John Deere mailing list"
<antique-johndeere at lists.antique-tractor.com>
Date: Sat, 12 Feb 2005 14:49:08 -0800 (PST)
Subject: RE: [AJD] B timing solved

> I do appreciate everybodys thourough responses to help, spark plugs are
> brand new out of the box. plug wires are newer copper cored wires,
> points
> test 0 every time, took my meter to the coil and set it to ohms, had
> one
> lead on the button, one grounded to the mag case, got a solid zero,
> this
> is likely my trouble, as it is the original paper and varnish wrapped
> coil, the covering is flaking away, and it looks like somebody broke
> off
> one of the leads and picked out some of the wire and soldered a new
> lead
> to it, in a shabby manner no less. sigh...... and upon pulling the
> inspection cover on the crank, I can see that the cam gear index is in
> perfect sync with the crank shaft. Now that Im all but certain its the
> coil, I suppose I don't have a choice, less anybody knows how to
> rebuild a
> coil, my father said to take it apart and find similar wire and re do
> it
> my self just for kicks, but Im not sure Ive got the time for that
> 
> Nick
> 
> > Nick:
> >
> > This is good. Let's think positive and assume your coil in the
> magneto is
> > really good. There is a way to manually test the magneto to see if it
> is
> > producing a hot enough spark but it may take two people to do it. I
> don't
> > remember if this is a manual or electric start tractor but try to
> find out
> > how far the spark will jump external to the sparkplug first.
> >
> > But first make sure the plug wires are connected right. If the
> magneto is
> > timed and installed properly the top wire on the cap should go to #1
> or
> > the
> > left cylinder and the bottom one to #2 or the right cylinder. If the
> > magneto
> > is installed 180 degrees out then the wires will have to be reversed.
> >
> > Hold the end of the sparkplug wire close to a bare part of the metal
> frame
> > of the tractor. Maybe a 1/4 of an inch or so while the engine is
> being
> > turned over. The spark should jump across this gap with a bright blue
> > spark
> > and make a snapping sound. If you have trouble getting the spark to
> jump
> > or
> > the color isn't blue but yellow then the spark is weak and further
> work
> > needs to be done at the magneto. If you are getting a good spark this
> way
> > then remove the plugs, attach the plug wires to each plug, ground the
> base
> > of the plug to some bare metal on the tractor and test to see if you
> are
> > getting a strong spark at the gap in the plugs. Not getting a good
> spark
> > at
> > the plug gap? Then the plugs need to be cleaned or replaced. If it is
> good
> > then there is a g
> > ood chance the ignition is working properly. However, there
> > still is a possibility that the plugs aren't firing under
> compression.
> > Replacing the plugs is the only way to verify this as a problem.
> >
> > Now if you are not getting a good spark from the magneto through the
> wires
> > then one of several other problems may exist. Wires can be bad?  If
> they
> > are
> > carbon based wires throw them away and get copper core wire versions
> > immediately. Once the wires are proven to be good then moving back up
> the
> > serial chain back to the magneto cap check to see if you are getting
> a
> > good
> > strong spark out of the cap. This can be accomplished by partially
> pulling
> > the wires out of the cap and turning the motor over to see if you can
> see
> > and hear the spark jump from the cap to the wire. If not the cap may
> be
> > bad
> > and the copper conductors inspected, cleaned and rechecked. Maybe
> even a
> > cap
> > replacement may be necessary. But before that remove the cap, check
> to see
> > that the rotor is clean and in good repair with all the contacts
> clean and
> > in good condition.  Then check to see if there is a spark being
> developed
> > when the points open after being closed. This can be done manually or
> > watching them while the engine is being turned over. No spark, then
> check
> > to
> > see if the point contacts are clean and closing properly. An ohm
> meter
> > would
> > be really handy here to check to see if the there truly is  ohms
> across
> > the
> > points when they are closed. If not clean and adjust the points until
> they
> > truly reduce the resistance to 0. There is also a remote chance the
> > condenser may have shorted out or is leaking badly. To test that just
> > disconnect the condenser temporarily. The tractor will run with it
> > disconnected but shouldn't be left disconnected.
> >
> > Now if none of these steps solve the problem there is a good chance
> the
> > coil
> > has gone bad assuming you are getting a good impulse from the spring
> > mechanism on the coil. You can hear if that is working or not. You
> heard
> > that sound when you manually timed the magneto.
> >
> > The bottom line is just work your way back from the spark plugs until
> you
> > isolate the problem.  Good luck.  Hope this helps.
> >
> >
> >
> > Dean A. Van Peursem
> > Snohomish, WA 98290
> >
> > I'm a walking storeroom of facts..... I've just lost the key to the
> > storeroom door
> >
> >
> > www.deerelegacy.com
> >
> > http://members.cox.net/classicweb/email.htm
> >
> >
> >
> > -----Original Message-----
> > From: antique-johndeere-bounces at lists.antique-tractor.com
> > [mailto:antique-johndeere-bounces at lists.antique-tractor.com] On
> Behalf Of
> > nick_solomon at infostations.com
> > Sent: Saturday, February 12, 2005 11:15 AM
> > To: Antique John Deere mailing list
> > Subject: [AJD] B timing solved
> >
> > I think Ive got it just about as close to in time as humanly possible
> > after 6 tries I got the slot flat, for some reason It didn't want to
> mesh
> > the first 5 tries, and it still pops a little bit,but won't start.  I
> tore
> > into my magneto and tested everything which in the past had been ok,
> and
> > my coil seems to be shorted out. is it still possible to get a bit of
> a
> > spark with a bad coil? has anybody every tried to rebuild their own
> coil?
> > tips? Im low on funds right now and need to just get it going to move
> it
> > so I don't kill myself pushing it( the day it stopped running I had
> it
> > parked smack in the middle of my drive blocking my garage where my
> truck
> > is parked... which normally Id use to pull it to where it needed to
> > be)love how luck works huh?
> >
> > Nick
> >
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> >
> >
> >
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