What happens if I mix up firing order by switching around ignition coils?

[erikpn]

Anything bad? Reason I ask is because I have a force 35. It sputters and misfires at midrange. Looking at the shop manual, the white wire from the CDI module should go to cylinder one. I have no idea whether cylinder 1 is the top cylinder or the bottom cylinder, and it appears impossible to locate this information. Intuition tells me cylinder 1 should be the top cylinder. If so cylinder 1 is the top cylinder, then the firing order is mixed up currently. I got the motor used from a guy who had all sorts of electrical issues and wiring issues, so I suspect this may be the case. Can I switch them and try running it? If I'm wrong, and it's correct now but I end up reversing the firing order, will it break anything?

 

[jerryjerry05]

Re: What happens if I mix up firing order by switching around ignition coils?

No won't hurt anything,either it will help it run or backfire???
But If it's backwards now it shouldn't run at all.
Top cylinder is #1
Year/model/serial#s???
The missing at mid range?Try the fuel system.
Water in the fuel?
Rebuild the fuel pump?
Clean the carb?
When the carb is off check the reeds.
Clean the fuel recirc system.
Depending on the year,you could have the fuel enricher or choke feeding too much gas to the carb??

 

[Jiggz]

Re: What happens if I mix up firing order by switching around ignition coils?

It either would not run or fire at all or if it does try to fire it backfires depending which wires got switched.

 

[erikpn]

Re: What happens if I mix up firing order by switching around ignition coils?

Backfired, guess that wasn't it. I have already gone through entire fuel system last summer. Expensive project since I ended up replacing the entire thing ha. Did testing with a spark tester and it couldn't jump a 7/16th gap, it could only jump about a 5/16th gap. Guess thats not it either. Pulled the flywheel, timing and everything was good. Compression is 140/140 even. New fuel pump diaphragm. new hoses, new fuel, cleaned and rebuilt carbs, inspected reeds, adjusted low speed needle, adjusted timing. Just time to give up and buy a new motor.