2003 I have a 50 HP Johnson and I cannot get the motor to run or briefly run at a rough idle for 20 to 30 seconds. Some history: This spring took boat out and it "coughed" one time then went on with normal operation. Second time out it coughed twice then ran for about two miles and then quit. Would not start. Took it to the water a week later after changing plugs and replacing fuel filter and finally got it to start but when in gear (forward) full throttle would barely push the boat.
I have accomplished the following;
Suspected faulty fuel but did not know for sure:
Fuel:
1. changed fuel filter with transparent filter
2. Drained and flushed tank and replaced fuel with non ethanol fuel.
3. Replaced primer bulb and hose assembly ( original equipment was weathered and seemed weak).
Ignition:
I have maintenance manual: 1. changed spark plugs and ohm check coil to be within range of factory specs. 2.plug wires are reading "0" resistance;
3. checked spark with spark testing tool. settings of 17 to 20; continuous spark blue strong, loud report during operation on each cylinder.
5. When I removed spark plugs,they are wet with fuel. I am wondering if there is a way the choke could be stuck or something like that. The Illustrated parts breakdown of the carburetor looks simple.
I am the original owner and this year is the first year I have had any issues with the motor operation, excluding trim and tilt.
recap I have cleaned the fuel system ( not carburetors or VRO) I have bench checked ignition system.I have a maintenance book that states that the charge coil has to read 800 to 1000 ohms. I can get 395. Since temp is stated to be 68 degree f. can this reading be good at 85 F?
I have accomplished the following;
Suspected faulty fuel but did not know for sure:
Fuel:
1. changed fuel filter with transparent filter
2. Drained and flushed tank and replaced fuel with non ethanol fuel.
3. Replaced primer bulb and hose assembly ( original equipment was weathered and seemed weak).
Ignition:
I have maintenance manual: 1. changed spark plugs and ohm check coil to be within range of factory specs. 2.plug wires are reading "0" resistance;
3. checked spark with spark testing tool. settings of 17 to 20; continuous spark blue strong, loud report during operation on each cylinder.
5. When I removed spark plugs,they are wet with fuel. I am wondering if there is a way the choke could be stuck or something like that. The Illustrated parts breakdown of the carburetor looks simple.
I am the original owner and this year is the first year I have had any issues with the motor operation, excluding trim and tilt.
recap I have cleaned the fuel system ( not carburetors or VRO) I have bench checked ignition system.I have a maintenance book that states that the charge coil has to read 800 to 1000 ohms. I can get 395. Since temp is stated to be 68 degree f. can this reading be good at 85 F?