I have been using my Johnson now for many trips this summer, it´s been running flawless until yesterday..
On the way home I cruised at 3000rpm for a while and when I started to throttle up it suddenly started hesitating and lost power, it newer reached 4000rpm and just boged down to even less than 3k. There are some very short bursts whit normal operating but they last for less than two seconds and then bogs down again.
From what I can hear, it sounds "normal" at idle and runs ok at less than 2500rpms.
I did a compression test with the following results: STBD: 2x115 PSI PORT: 2x125 PSI
I have also tested with different tanks wih fuel.
The spark plugs look equal, they are all new for this season.
I tried to run it whilst pumping on the primer bulb, but the issue remained, how stiff should the bulb be when running? I felt it went quite soft for a short period when I was running and pumping at the same time..
What different issues could cause this behavior and what is the most likely cause?
On the way home I cruised at 3000rpm for a while and when I started to throttle up it suddenly started hesitating and lost power, it newer reached 4000rpm and just boged down to even less than 3k. There are some very short bursts whit normal operating but they last for less than two seconds and then bogs down again.
From what I can hear, it sounds "normal" at idle and runs ok at less than 2500rpms.
I did a compression test with the following results: STBD: 2x115 PSI PORT: 2x125 PSI
I have also tested with different tanks wih fuel.
The spark plugs look equal, they are all new for this season.
I tried to run it whilst pumping on the primer bulb, but the issue remained, how stiff should the bulb be when running? I felt it went quite soft for a short period when I was running and pumping at the same time..
What different issues could cause this behavior and what is the most likely cause?
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