Farmall Cub Forum -- Questions and answers to all of your Cub related issues.
Moderator: Team Cub
Notice: For sale and wanted posts are not allowed in this forum. Please use our free classifieds or one of our site sponsors for your tractor and parts needs.
7 posts • Page 1 of 1
I understand a coil will build up heat. How hot? Hot enough to burn your hand? Second question: will firing order be 180 degrees out of time if plugs were wired with incorrect thinking that #1 was at rear of engine and then following correct order of 1-3-4-2?? Cub would start fairly easy but low power. I am assuming 180 degrees out of time would be a cause of low power? Thanks
Warm but not enough to burn your hand.
Yes out of time. Cylinders are numbered from the front of the engine to rear, 1, 2,3,4.
Cause no power as in engine will not run.
I have an excuse. CRS.
Sorry, I found the plugs had been wired back to front (#1 at the rear) with #1 on the distributor in the #4 spot. I changed the wires around like they should be. Didn't think it would run the other way but it did, just not very much power. I also found loose connecter on coil tower wire and fixed that. Guess that was the "hot coil" problem. You could not keep your hand on it. Now it's just pleasantly warm.
If the distributor was timed for #1-Front, and it was wired for #1-Rear, then the engine simply would not run, period. Not physically possible. The pistons would be at the top of the exhaust stroke when the spark plugs fired. No compression. No bang. No run.
You can time the distributor for #1-Rear, wire it for #1-Rear, and it will run just fine, with full power. That's a neat feature of inline engines. Confuses the heck out of the next guy to own it, though.
It's possible you had #2 and #3 correct, and just #1 and #4 swapped? It would run, but be low on power. Also it would sound funny.
It's very possible just two wires were swapped. When I saw #1 in the wrong position I just pulled them all and put them in the right position. I'm just glad I didn't have to get into pulling the distributor and all that. Tomorrow I am going to check the timing. It starts so easy I can't see it being a problem though.
7 posts • Page 1 of 1
Who is online
Users browsing this forum: Bob McCarty and 4 guests