Trying to track down a lack of power
Posted: Mon Apr 23, 2012 7:04 am
Im still battling a significant decrease in power between my green 712 and my tan. The green has significantly more power even with a Swiss cheese muffler and I can't seem to figure out why. I'd state it as low end power as the truck revs pretty well and performs decent at high rpm. Any advice as to what to try next would be appreciated.
Found no change of power converting to civilian ignition. Timed to 9degrees and had pinging. Came back to 7. I checked timing at 2500 rpms and I am not as advanced as I should be at that rpm, but bringing it any further causes ping.
Tried adjusting, and even swapping the carbs between vehicles and had no change. I noticed my idle surges after swapping them back but only very slightly. I don't think it's in the carbs as the problem did not change when swapped.
Compression runs about 125-130 a cyl. I'm confident I have the valves adjusted but I may need to take a second look to be sure. It also has a decent puff of smoke at startup which goes away when warmed.
The condition of the trucks chassis is fantastic but m afraid I may have worn cylinders, leading to the low power. Any ideas?
Found no change of power converting to civilian ignition. Timed to 9degrees and had pinging. Came back to 7. I checked timing at 2500 rpms and I am not as advanced as I should be at that rpm, but bringing it any further causes ping.
Tried adjusting, and even swapping the carbs between vehicles and had no change. I noticed my idle surges after swapping them back but only very slightly. I don't think it's in the carbs as the problem did not change when swapped.
Compression runs about 125-130 a cyl. I'm confident I have the valves adjusted but I may need to take a second look to be sure. It also has a decent puff of smoke at startup which goes away when warmed.
The condition of the trucks chassis is fantastic but m afraid I may have worn cylinders, leading to the low power. Any ideas?