RandellWNY
New member
I have a 2000 70hp Johnson that I recently purchased used so I know little about it's back ground. I will outline what happened below and maybe someone has an idea of whats wrong.
Drove the boat about 4 miles out in Lake erie fishing with boat running great.
Made 5 drifts over a spot about 1/4 mile long.
Down time durring drifts about 20 minutes.
On the 6th run back up to my starting point the motor started to spit and sputter and finally was nocked down to only running at an idle.
If you attempted to go any faster then idle the motor would shake spit sputter and look like it was going to come off the engine mounts.
Changed the spark plugs with no help
I was able to get a little (very little) more rpm out of the motor for a while with the cover off. but it seemed to heat up and go right back to idle only
Motor did not seem "hot" and no horns sounded.
Idled all the way back in and each time I tried to go ove idle it would spit and sputter badly
Took it to a marine shop and they started it about 40 minutes after it was out of the water and not running. It started right up and ran great for about 45 seconds and then started to spit and sputter.
They could not get to it for a week and when they did they found nothing worng. they said they ran it for 45 minutes and could not recreate the issue.
I took it down to the launch and ran it myself for twenty minutes and it never has run better
Sorry for the book above but I am at a loss and the marine place does not know what to do with it and I have no trust in it. Any help would be great
Thanks
Drove the boat about 4 miles out in Lake erie fishing with boat running great.
Made 5 drifts over a spot about 1/4 mile long.
Down time durring drifts about 20 minutes.
On the 6th run back up to my starting point the motor started to spit and sputter and finally was nocked down to only running at an idle.
If you attempted to go any faster then idle the motor would shake spit sputter and look like it was going to come off the engine mounts.
Changed the spark plugs with no help
I was able to get a little (very little) more rpm out of the motor for a while with the cover off. but it seemed to heat up and go right back to idle only
Motor did not seem "hot" and no horns sounded.
Idled all the way back in and each time I tried to go ove idle it would spit and sputter badly
Took it to a marine shop and they started it about 40 minutes after it was out of the water and not running. It started right up and ran great for about 45 seconds and then started to spit and sputter.
They could not get to it for a week and when they did they found nothing worng. they said they ran it for 45 minutes and could not recreate the issue.
I took it down to the launch and ran it myself for twenty minutes and it never has run better
Sorry for the book above but I am at a loss and the marine place does not know what to do with it and I have no trust in it. Any help would be great
Thanks