Maybe Later
Cadet
- Joined
- Sep 18, 2009
- Messages
- 21
I will try to make this as short as possible but I have been fighting problems for a couple of months now & I have tried almost everything.
I purchased the boat a year ago and there were no fuel filters on the port motor and only the in-line filter on the stbd motor. I have removed the screens on the tank fittings (clogged), added water separators/fuel filters and replaced all of the fuel lines including the small carb lines. used metal clamps on the 3/8 line and zip ties on the small lines. Here is what I have done to each motor per the omc manual:
Port Motor: "Idles very rough until 1500 RPM runs fine after that"
Rebuilt Carbs twice (used new kits 2nd time, 2 carbs had #50 intermediate jets instead of #54 so I replaced them with #54. Didnt help)
New Spark Plugs
DeCarbed motor
Swaped fuel pump
Checked compression (all at 130 psi)
Checked Spark (7/16 gap blue spark)
Synched linkages (Idle timing was at 4 deg btdc had to back timing screw all the way to get it to reach 8 deg atdc then it started to backfire so I turned it back to 0. I assume I have to fix whatever is wrong with the motor to sync properly.)
Checked recirculation system
Checked Primer system
New thermostats (both were bad now Idles at 140 deg)
Swaped Power Packs
Stbd Motor : "stalls at idle have to rev up quick and shift into gear will run at 1500 rpms and fine after that"
Did the same as the port motor except 2 carbs had #46 jets so I replaced them with #54. I synched the linkages fine and set the Idle timing at 8 deg atdc (was at 6) motor still stalls.
Anything I have over looked?
I purchased the boat a year ago and there were no fuel filters on the port motor and only the in-line filter on the stbd motor. I have removed the screens on the tank fittings (clogged), added water separators/fuel filters and replaced all of the fuel lines including the small carb lines. used metal clamps on the 3/8 line and zip ties on the small lines. Here is what I have done to each motor per the omc manual:
Port Motor: "Idles very rough until 1500 RPM runs fine after that"
Rebuilt Carbs twice (used new kits 2nd time, 2 carbs had #50 intermediate jets instead of #54 so I replaced them with #54. Didnt help)
New Spark Plugs
DeCarbed motor
Swaped fuel pump
Checked compression (all at 130 psi)
Checked Spark (7/16 gap blue spark)
Synched linkages (Idle timing was at 4 deg btdc had to back timing screw all the way to get it to reach 8 deg atdc then it started to backfire so I turned it back to 0. I assume I have to fix whatever is wrong with the motor to sync properly.)
Checked recirculation system
Checked Primer system
New thermostats (both were bad now Idles at 140 deg)
Swaped Power Packs
Stbd Motor : "stalls at idle have to rev up quick and shift into gear will run at 1500 rpms and fine after that"
Did the same as the port motor except 2 carbs had #46 jets so I replaced them with #54. I synched the linkages fine and set the Idle timing at 8 deg atdc (was at 6) motor still stalls.
Anything I have over looked?
