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Hello. New Member here from S.W. Florida.
2001 Johnson 90 PLSIG.
I purchased the boat last year and ran it all summer and fall with no problems.
Last trip of 2014 the motor would stumble at WOT. It happened a few times over the summer but would clear up as the day went on. This time motor continued to run rough..
Inspected for fuel leaks and found fuel coming from the Vapor Separator. Purchased new gasket and no more leaks.
Next time out on the water, the motor was still stumbling at wot and began stumbling/hesitating on takeoff at low rpms as well.
Limped in and called it a day.
I took covers off of motor and found that the lower starboard carburetor was leaking fuel from the bowl. The brass drain plug was loose and stripped. The other three were tight.
I'm also having a lot of unburned oil/sludge leaking from the prop. This and the plugs have me thinking I am running too rich. VRO is disconnected and I premix. 50/1
Motor starts very easily and idles great.
Questions:
1: Are the carbs very difficult to overhaul?
2: Rebuild all carbs or just the one?
3:Are the carb rebuild kits all I will need to order or will I need jets and orifices that don't come with the kit? I assume I will need a new bowl for the stripped screw on the one carb.
4: How difficult is the sync once the carbs are re-installed?
5: Is this a good time to do the water pump as well since the carbs will be removed and access is easier to shift shaft.
The motor is pumping water fine but it has been a few years since the LU has been dropped and I would like to grease the shaft and have some confidence for the future.
I have done a couple water pumps on Suzukis in the past and feel I could do the pump. The carbs have me a little intimidated. Mainly the sync.
I was quoted about a grand for the two services and I would like to learn my motor as it is in good shape for it's age and I plan to keep it for a while.
Sorry about the wall of text and all the questions.
Any help would be greatly appreciated.
Thanks in advance.
P.S. I tried using search but kept getting the " Your submission could not be processed because a security token was missing." error.
Cleared cookies and cache with no success. Probably due to me being a new member.
2001 Johnson 90 PLSIG.
I purchased the boat last year and ran it all summer and fall with no problems.
Last trip of 2014 the motor would stumble at WOT. It happened a few times over the summer but would clear up as the day went on. This time motor continued to run rough..
Inspected for fuel leaks and found fuel coming from the Vapor Separator. Purchased new gasket and no more leaks.
Next time out on the water, the motor was still stumbling at wot and began stumbling/hesitating on takeoff at low rpms as well.
Limped in and called it a day.
I took covers off of motor and found that the lower starboard carburetor was leaking fuel from the bowl. The brass drain plug was loose and stripped. The other three were tight.
I'm also having a lot of unburned oil/sludge leaking from the prop. This and the plugs have me thinking I am running too rich. VRO is disconnected and I premix. 50/1
Motor starts very easily and idles great.
Questions:
1: Are the carbs very difficult to overhaul?
2: Rebuild all carbs or just the one?
3:Are the carb rebuild kits all I will need to order or will I need jets and orifices that don't come with the kit? I assume I will need a new bowl for the stripped screw on the one carb.
4: How difficult is the sync once the carbs are re-installed?
5: Is this a good time to do the water pump as well since the carbs will be removed and access is easier to shift shaft.
The motor is pumping water fine but it has been a few years since the LU has been dropped and I would like to grease the shaft and have some confidence for the future.
I have done a couple water pumps on Suzukis in the past and feel I could do the pump. The carbs have me a little intimidated. Mainly the sync.
I was quoted about a grand for the two services and I would like to learn my motor as it is in good shape for it's age and I plan to keep it for a while.
Sorry about the wall of text and all the questions.
Any help would be greatly appreciated.
Thanks in advance.
P.S. I tried using search but kept getting the " Your submission could not be processed because a security token was missing." error.
Cleared cookies and cache with no success. Probably due to me being a new member.
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