Hello all - My first post here, so please be gentle (
). Got a 2002 Johnson 115 (J115VLSNF) attached to an 2001 Aquasport Osprey 175. I usually run the boat once a week and almost starts right up on 1st of 2nd turn but not more than 5 turns. Idles a little rough but runs pretty well at lower RPM but when I get past the no-wake marker and go to accelerate it cuts in and out (not really a "bog" - but a clean/jerky cutting in and out) but eventually get to about 4500 - 5000 RPM... and then cuts in and out just randomly. I back off to 2000 RPM and it mellows out - no cutting out... try again to and does the same thing. I did notice after about 30 mins or so running at lower RPM (cruising) and then going to WOT it ran smooth - no hesitating/cutting out. Seems to be getting worse though every time I go out.
I've got the boat at home now and pulling apart (see pics). Inspected the fuel lines an notices some looseness so going to re-zip tie using the marine/fuel zips. Also, after priming I noticed some leakage in a few spots near carbs and below fuel pump. Upon further inspection found a screw had come loose on one of carb bowls - about half way loose. There just seems to be fuel seepage at carbs and around hose below fuel pump. At one point I noticed a squirt of fuel after priming and starting but didn't catch exactly where it came from. Could this be the cause of this cutting in-and-out during acceleration and at higher RPM? New fuel and additive and also change out spark plug cables as I noticed the bottom two were NOT snugging up like new ones would (not getting the full 'click-in' when attached to plug). Also change oil water sep this summer (change it every summer). Plugs look good. Rebuilt carbs with the standard BRP kit summer of 18. I see guys mention power pack is bad - fuel pump is bad - float is stuck - high speed jets clogged - just trying to narrow down to easy stuff before tearing off carbs again and rebuilding - which I am afraid this is where I'm going...
Thanks in advance for everyone's input -
I've got the boat at home now and pulling apart (see pics). Inspected the fuel lines an notices some looseness so going to re-zip tie using the marine/fuel zips. Also, after priming I noticed some leakage in a few spots near carbs and below fuel pump. Upon further inspection found a screw had come loose on one of carb bowls - about half way loose. There just seems to be fuel seepage at carbs and around hose below fuel pump. At one point I noticed a squirt of fuel after priming and starting but didn't catch exactly where it came from. Could this be the cause of this cutting in-and-out during acceleration and at higher RPM? New fuel and additive and also change out spark plug cables as I noticed the bottom two were NOT snugging up like new ones would (not getting the full 'click-in' when attached to plug). Also change oil water sep this summer (change it every summer). Plugs look good. Rebuilt carbs with the standard BRP kit summer of 18. I see guys mention power pack is bad - fuel pump is bad - float is stuck - high speed jets clogged - just trying to narrow down to easy stuff before tearing off carbs again and rebuilding - which I am afraid this is where I'm going...
Thanks in advance for everyone's input -



