April 26th, 2010, 10:21 AM
ATV Mehcanic out there Need Help???
Any ATV mechanics out there need help with 1978 ATC 70
It will not fire It will fire when I hold the coil wire and pull the rope but will not fire otherwise
Need help Thanks in advance Jim
April 26th, 2010, 11:39 AM
what wire on the coil? There is a trigger wire, which is probly coming from the points(may have a cdi, but i think it still has points in 78). A ground wire. And then the secondary(spark plug wire).
April 26th, 2010, 03:28 PM
It has a wire coming from the points it connects straight to the coil
The big wire going to the spark plug
When I pull the rcoil starter it will shock me (big time) bui will not fire the spark plug
You are correct points only I have changed them and set the new ones
We rebuilt the engine it ran good My son stripped the 70 down to repaint etc after he put the bike/plastic back on it has never fired
Help is appreciated Thanks Jim
April 26th, 2010, 03:36 PM
April 26th, 2010, 04:05 PM
Did you try a different spark plug?
April 26th, 2010, 04:15 PM
several different ones and also plug caps
April 26th, 2010, 04:19 PM
April 26th, 2010, 04:28 PM
That doesnt make sense. How do you know it's not firing the plug? did you ground the plug to the cyl head when you checked it? will it(the coil) fire a spark checker? does the boot snap on to the plug firmly? Is there a ground that you forgot to re-install? mabye its not a spark issue? mabye you have a fuel problem? Just throwing out possiablities
April 26th, 2010, 04:38 PM
No fuel problems that is what I am trying to trace down I am grounded so when I hold the wire I get shocked Yes tried new spark plug cap no fire but when I put my finger in the cap guess what shocked again
I am open for all suggestions
April 26th, 2010, 04:43 PM
Yes I did ground the plug
April 27th, 2010, 12:58 PM
stick a screwdriver in the sparkplug cap,hold it about 1/4" from the head while pulling the cord & see if it fires.spark from the screwdriver to the head.
April 27th, 2010, 01:30 PM
I tried that also no fire I am really puzzled
April 27th, 2010, 07:39 PM
One correction it a 1985 ATC 70 Got to be a mechanic or 2 out there as large as our forum is
April 28th, 2010, 05:55 PM
April 28th, 2010, 06:17 PM
If your holding the wire and getting shocked and there is no spark on the plug then you have a broken wire and its sparking somewhere else.Hook everything back up and when its dark,try to start it.You will see where the spark is.
'10' Elite Judge
'09' Elite GT 500
'08' Mathews DXT
Harvest Time Archery Shooting Staff
April 29th, 2010, 12:12 PM
When your son stripped down the frame and painted it did he make sure to scrap/sand the paint off any part of the frame that ground wires attach? Check the kill switch as well.
If you hold the plug wire at a certain angle and it shocks you try holding it at that same angle and use a screw driver to ground it to an unpainted part of the motor. You might just have a broken plug wire coming out of the coil.
By srkundell in forum Bowhunting and Bowhunter Showcases
Last Post: May 24th, 2010, 12:26 PM
By GuyWithBow in forum ATVs, Motorbikes, and Motor vehicles
Last Post: May 8th, 2008, 10:15 PM
By 660 Grizzly in forum Bowhunting and Bowhunter Showcases
Last Post: July 8th, 2004, 05:39 PM