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Jeff
New member
Username: Quiethorseranchb
Post Number: 1
Registered: 03-2008
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, March 21, 2008 - 07:05 pm: | 
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Hey guys, I got my first 6x6 on Tuesday. It's a 1970 Argo (serial number 472). It came with a nearly new 14 hp Vanguard Twin in it. When I got it home I was really disappointed with the lack of power so I called Richard and he recommended that I check to see if if was running on both cylinders. He hit the nail right on the head. I put new plugs in but that didn't fix it so I started looking into it and I found out that these twin cylinder Vanguards have an ignition coil for each cylinder. I pulled the shroud and my thought was to remove the ignition coil from the good cylinder and put it on the bad one. If the problem reversed, then I would know that I had a bad ignition coil. When I pulled the first coil, I found a tiny wiring harness that connected each coil to the other. There is a small diode near each end. The diode near the end that was connected to the dead cylinder was blown. I found out that this harness is part of the engine shut down system and it's liked to the ignition switch. To determine if my coils were still good, I pulled the harness and started the engine and viola, it started running on both cylinders and ran perfect! It will run without this harness, you just won't be able to shut the engine down with the switch. You have to pull both plug wires and when I did it I got zapped pretty good. It cost me all of $8.48 to order the part and now I'm back in business! Hope this helps someone in the future. |
Rogersmith
Advanced Member
Username: Rogersmith
Post Number: 372
Registered: 01-2005
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, March 21, 2008 - 07:19 pm: |
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You may have very well helped some guys on here. They have been complaining about rear cylinder spark.
The argo ignition switch, when in the off position, grounds the coils. |
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