fmt2bx
Petty Officer 1st Class
- Joined
- May 27, 2015
- Messages
- 217
Hello,
I have an issue with a 1988 Force 50HP (single carb). It runs on 1 cyl only. Unable to get WOT rpm.
The weird thing is the following:
Motor starts fine. If I unplug Bottom cyl (#2) plug, the motor quits. This would tend to show that Top Cyl (#1) isn't firing.
However if I unplug #2 spark plug wire, the motor starts and runs on the top #1 cyl. (?)
So, with motor started, I unplug #1 plug and motor keeps running at same rpm not any rougher.
Motor started, I unplug #2 plug and motot quits immediately , cal#1 not firing.
Motor off, I unplug #2 plug and motor starts and runs with Only #1 plug.
Seems, that it isn't a fuel issue as I can get both cylinder to run but independently.
Here is what I have done so far:
Compression =130 on both cyl
Replaced spark plugs
squirt fuel mixture in carb and makes it worth, (too rich I presume)
There is spark on both plugs when tested and both are bright blue. (Changed the plugs any way but no changes)
Carb cleaned up.
Fuel pump replaced.
Any ideas? CDI box? Coils? seems like an electrical issue where when both plugs are on only one cal fires.
Thank you.
Fred
1
I have an issue with a 1988 Force 50HP (single carb). It runs on 1 cyl only. Unable to get WOT rpm.
The weird thing is the following:
Motor starts fine. If I unplug Bottom cyl (#2) plug, the motor quits. This would tend to show that Top Cyl (#1) isn't firing.
However if I unplug #2 spark plug wire, the motor starts and runs on the top #1 cyl. (?)
So, with motor started, I unplug #1 plug and motor keeps running at same rpm not any rougher.
Motor started, I unplug #2 plug and motot quits immediately , cal#1 not firing.
Motor off, I unplug #2 plug and motor starts and runs with Only #1 plug.
Seems, that it isn't a fuel issue as I can get both cylinder to run but independently.
Here is what I have done so far:
Compression =130 on both cyl
Replaced spark plugs
squirt fuel mixture in carb and makes it worth, (too rich I presume)
There is spark on both plugs when tested and both are bright blue. (Changed the plugs any way but no changes)
Carb cleaned up.
Fuel pump replaced.
Any ideas? CDI box? Coils? seems like an electrical issue where when both plugs are on only one cal fires.
Thank you.
Fred
1