No power with weight in the boat.

[dahoopd]

Re: No power with weight in the boat.

the engine uses more fuel when loaded. so with only two people, the amount of fuel able to flow matches the need. when you have more load, the amount of fuel able to flow does not match need.

fix the fuel issue, and you may resolve the speed issue

Maybe Im missing something. What fuel issue? The line was replaced, the vents were checked, the fuel is flowing? I was hoping to get some ideas on what to check. I checked the compression as asked. I don't know what else to check. Maybe the carbs? Would dirty carbs cause the issue? I will send them out and have them cleaned.

 

[Scott Danforth]

Re: No power with weight in the boat.

if your bulb is collapsing, you have a fuel delivery issue - period. something between the tank and the engine is causing a restriction.

it is not from your engine to the carbs. it is between the fuel tank and the engine connection.

 

[Jlawsen]

Re: No power with weight in the boat.

O.K. so I'm going o take a different approach.

Q. What would cause a 23 year old boat to act like it's heavier than it was 23 years ago?

A. Saturated foam.

Q. What would cause a 23 year old motor to not be able to reach WOT RPM with a normal load.

A. It's old and tired. Probably has low compression and doesn't hold fuel in the cylinders like it did when it was new.

 

[scipper77]

Re: No power with weight in the boat.

Maybe the ball itself is the problem. Do you have access to another tank ( assuming external).

 

[Scott Danforth]

Re: No power with weight in the boat.

I agree, however this was covered in post #7 and #12.

the collapsed primer bulb as asked in post #14, 15, 16, 20 and 22- admitted no clue by OP as to why bulb collapsed in post #18

following the principle of Occam's Razor, as well as the Socratic method. Why is the fuel bulb collapsing? Answer - there is a restriction and the engine cant get fuel.

 

[dahoopd]

Re: No power with weight in the boat.

I agree, however this was covered in post #7 and #12.

the collapsed primer bulb as asked in post #14, 15, 16, 20 and 22- admitted no clue by OP as to why bulb collapsed in post #18

following the principle of Occam's Razor, as well as the Socratic method. Why is the fuel bulb collapsing? Answer - there is a restriction and the engine cant get fuel.

I agree, however this was covered in post #7 and #12.

the collapsed primer bulb as asked in post #14, 15, 16, 20 and 22- admitted no clue by OP as to why bulb collapsed in post #18

following the principle of Occam's Razor, as well as the Socratic method. Why is the fuel bulb collapsing? Answer - there is a restriction and the engine cant get fuel.

Are your post counts high because you like to type redundant info? Anyone that has graciously taken the time to reply can see the bulb has been a topic of discussion. The posts that you pointed out were not "questions" regarding the ball, nor at any given time did I ever admit not having any clue in regards to the ball, or its purpose. As stated in the first post along with another issue, the bulb is collapsing. Thus bringing us to this moment as in the beginning, I have no idea why or what is causing the collapse.

I fully understand there is an issue between the tank and the ball now, thank you for addressing that. I have checked everything from what I understand can be checked. I will be removing the check valve from the top of the tank to see if that is the issue and if it effects the bulb from collapsing. I had "assumed" its there to help pressurize the tank. But as I stated previously, I am learning. I can only relate the check valve in the top of the tank to a PCV valve in a car. Its very difficult to blow through, much like a clogged PCV valve. I have also bought another bulb for the fuel line as the bulb that exists on the new line seems to be less firm than the new one.

I am very grateful for any assistance but don't do well to having my balls busted for not comprehending.

 

[scipper77]

Re: No power with weight in the boat.

I would recommend that you change the ball and remove the check valve seperately. It's hard to tell what caused a change in performance when you go around changing too many variables at once.

 

[dahoopd]

Re: No power with weight in the boat.

I would recommend that you change the ball and remove the check valve seperately. It's hard to tell what caused a change in performance when you go around changing too many variables at once.

I removed the check valve first and the problem was solved. Still seems to be a little slow getting up on plane but Im happy its running better.

Thank you to all of you for helping with the issue, its greatly appreciated.

 

[eric the fisherman]

Re: No power with weight in the boat.

I have a 18' Sunbird with an 88spl. I took the boat out with 4 average adults in it and it wouldn't go over 3k. The speedometer isnt working so I couldn't tell you how fast that was at WOT. The fuel bulb was collapsed while out so I had assumed it was a venting issue and the motor was starving itself.

Anyway, I checked the fuel vent and everything and found nothing out of the ordinary. I took the boat out again 2 days later with just 2 adults and the boat ran great. I assumed that maybe it may have been the fuel line. Well needless to say, I took it out yet again today with 4 adults and it again wouldn't do over 3k rpms just as before, seems like 10mph. I made people get out of the boat an it ran fine, put them back in and it wouldn't run right. Im stumped. Any help is once again, greatly appreciated.

I had a boat that wouldnt plane at wot.One person plane an ran great. Two people took awhile.Three and i had the same problem as you seem to be having. Same symtoms as u describe.Ran great at all speeds until you started adding weight.Even started an idled good.Add more than 2 people an you had problems. Turns out had water in tank.was hard to diagnois because it ran so good just no power with weight in it.Might try checking for that. They have a paste that will turn red if water is detected. Just remove top of tank where filler hose goes in top an put paste on screwdriver .if turns red theres ur problem