Ok so I'm new here hoping I post this correctly, freind has a 86 bayliner with a 86 force 125 four cylinder with two carbs, early in the boat season he took it out and couldn't get it to run so they brought it to me (Diesel guy ) so I cleaned the carbs got it running,they took it out and was pleased it ran ok, he went out a month later it was hard to start used a lot of fuel and would stall trying to accelerate, went back tested compression 1,2,and 4 was 135 #3was 115, found pin hole in fuel pump on motor so kitted it and installed all new fuel lines from tank to electric fuel pump with new filter and new lines all the way to both carbs, also found one bad coil which was replaced, took it back out and and hit 35 mph wot ran good then my freind belly slapped across a wake shortly atfer lost power as if running out of fuel but still idled fine,I was able to get it up to 20 mph but it seemed to get worse as we got closer back to dock, electric pump didn't help and once home seemed to have slow flow,so I opened the float cover and found no debris or water in tank so relocated a new glass filter to new loction to watch flow and got good flow again fired it up in a tank at home it seemed to idle ok and while in neutral with no timing advance ( meaning controlled the carbs at the throttle arm) it seemed to have a good response although I didn't rev it high or for more then a couple of seconds due to not advancing the timing and not wanting to hurt anything I did notice it seemed to pop if I gave it to much throttle as if hitting a rev limiter, all was good, then Saturday my freind ask me to go out again,so to be safe I fired it up in the tank before heading out and it had a hi idle but ran smoothly so I lowered the idle at the rod at the tower like the book says back to where it was closer to 750 or so ( no rpm gauge) took it out launched fine good idle even went in gear without stalling then tried to throttle up and it just fell on its face didnt matter if I slamed it to full or eased it up it just acted like it was loading up ,took the cover off and same thing, as a side note after cleaning the carbs both times and setting the idle screws at 1/14 out from seat,it runs there but doesn't matter how far in or out I trun the screws nothing changes it just idles the same,any ideas other then using it as and anchor.
