Had an interesting thing just happen on a little ride we did tonight.
I was following my son on a 250 Bravo for about 10 minutes, steady throttle posistion, around 5500 rpm when all of a sudden it almost shut down on me. I squeezed the throttle wide open and continued to feather it till picked up with a full power roar. I'm guessing this was a fouled plug.
Anyway continued along, this time constantly moving the throttle. More like full on to idle. Problem went away, for awhile. I thought I'd experiment, and sure enough if I kept a steday throttle around 5 to 6000 rpm, brrrrr,brrrrrr, brrrrr, and then it would pick up. However it almost shut down on me once, acting like it was out of gas. (My gas gauge broke the first day I owned it, so I can't tell you how much fuel is in the tank. Just know that I filled up about 40 miles ago.) Just when I was ready to pull off the trail it cleared itself out and I then just kept gunning the thing and it ran fine.
So, what I see here is if you keep a steady throttle in this zone, the plug(s) foul out. Keep changing the RPM and it works fine.
Anyone else seeing this problem?
I was following my son on a 250 Bravo for about 10 minutes, steady throttle posistion, around 5500 rpm when all of a sudden it almost shut down on me. I squeezed the throttle wide open and continued to feather it till picked up with a full power roar. I'm guessing this was a fouled plug.
Anyway continued along, this time constantly moving the throttle. More like full on to idle. Problem went away, for awhile. I thought I'd experiment, and sure enough if I kept a steday throttle around 5 to 6000 rpm, brrrrr,brrrrrr, brrrrr, and then it would pick up. However it almost shut down on me once, acting like it was out of gas. (My gas gauge broke the first day I owned it, so I can't tell you how much fuel is in the tank. Just know that I filled up about 40 miles ago.) Just when I was ready to pull off the trail it cleared itself out and I then just kept gunning the thing and it ran fine.
So, what I see here is if you keep a steady throttle in this zone, the plug(s) foul out. Keep changing the RPM and it works fine.
Anyone else seeing this problem?