djyox
Old school -not by choice
- Location
- Twincities, MN
I just swapped over from the 550 PP to a 550 reed motor with the stock 28 kehien. After everything is hooked up correctly I tried to take it for a test run. The ski starts up and idles great. I jump onto the ski and start to pull out and it gets up to about half open throttle and past that nothing. Low end is there, but top end nothing. Its enough power to be on plane, but thats about it.
I have tried to trouble shoot it. Here is what we have done:
-Checked the gas tank to make sure its holding pressure by blowing into a tube and holding a finger over it for a few seconds and the letting it blow off. Also can tell its holding pressure because after sitting in the hot sun it lets off pressure when opening the cap on the tank
-Checked the fuel lines to make sure there is no loss of pressure in them. How we did that is took a tube, and bypassed the fuel selector and fuel bowl, right from the reserve pickup in the tank directly to the in on the carb.
-Checked the check valve on the fuel tanks breather tube. How we checked that is by taking it off the tank, sucking and blowing making sure that it is only letting in and not blowing out.
-Checked the pulse line by taking it off and blowing onto it with a finger on the one end. Also tried sucking too. I did however have a newer line that I put on there as the one that was on it was starting to get old and harder, and I figured what the hey, its off anyhow, why not.
-Checked the carb for any gum or debris that may be clogging the jets. When we took it off the carb was soo clean on the inside that you could have eaten off of it. (If you haven't had french fries with gas/oil flavor your missing out.)
-Checked the High screw. It is one turn out. I am unsure what they are suposta be at, but one out sounds about right to me.
It seems as if we checked more stuff than that, but I think thats it. Next on the cutting block is the fuel pump as I didn't want to take that off as you have to break the seal from the carb to manifold due to having to remove it to get to the bottom screws on the pump.
I also didn't check anything electrical. The electrical box is from my personal running ski, and was working great before the swap. I figured the timing was fine because of how well it idles and runs on low end.
Both cylinders are hitting on the line at 155psi. Spark plugs both read good, although the rear plug is a bit darker than the front. And the front one is what I would say is the ideal color.
Any ideas??????????????????????
PS - I tossed it in this section because I thought it could pass as a motor problem, also I wanted more eyes to see it.
I have tried to trouble shoot it. Here is what we have done:
-Checked the gas tank to make sure its holding pressure by blowing into a tube and holding a finger over it for a few seconds and the letting it blow off. Also can tell its holding pressure because after sitting in the hot sun it lets off pressure when opening the cap on the tank
-Checked the fuel lines to make sure there is no loss of pressure in them. How we did that is took a tube, and bypassed the fuel selector and fuel bowl, right from the reserve pickup in the tank directly to the in on the carb.
-Checked the check valve on the fuel tanks breather tube. How we checked that is by taking it off the tank, sucking and blowing making sure that it is only letting in and not blowing out.
-Checked the pulse line by taking it off and blowing onto it with a finger on the one end. Also tried sucking too. I did however have a newer line that I put on there as the one that was on it was starting to get old and harder, and I figured what the hey, its off anyhow, why not.
-Checked the carb for any gum or debris that may be clogging the jets. When we took it off the carb was soo clean on the inside that you could have eaten off of it. (If you haven't had french fries with gas/oil flavor your missing out.)
-Checked the High screw. It is one turn out. I am unsure what they are suposta be at, but one out sounds about right to me.
It seems as if we checked more stuff than that, but I think thats it. Next on the cutting block is the fuel pump as I didn't want to take that off as you have to break the seal from the carb to manifold due to having to remove it to get to the bottom screws on the pump.
I also didn't check anything electrical. The electrical box is from my personal running ski, and was working great before the swap. I figured the timing was fine because of how well it idles and runs on low end.
Both cylinders are hitting on the line at 155psi. Spark plugs both read good, although the rear plug is a bit darker than the front. And the front one is what I would say is the ideal color.
Any ideas??????????????????????
PS - I tossed it in this section because I thought it could pass as a motor problem, also I wanted more eyes to see it.
