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Carb dribbling virus

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miro
Senior Member
Username: miro

Post Number: 1046
Registered: 11-2001


Posted on Wednesday, June 26, 2019 - 10:24 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Yes, , my boat has caught the same carb "dribbling" malady that Chris has experienced.

Last fall it was a drop or two but now it's a constant dribble when I am trying to start the engine. I tried taking off the cap, and diddling the float arm, sort of works but still more dribble than before, and makes the engine run really rich - will 4 cycle sometimes.

I now start up and run a minute or two and then open the gas tank fuel valve.
When running, no dribbles.

Seems that the engine vibration seats the valve tighter than when it is at rest.
The float is the new material installed last year, clean fuel , new fuel filter etc etc.

The boat and engine seem to really like the summer weather ( starts well and goes) as do I.

This all makes the Kingston 4 ball carb on my copper jacket DisPro look good.
miro
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chris_spring
Member
Username: chris_spring

Post Number: 22
Registered: 02-2019
Posted on Thursday, June 27, 2019 - 06:31 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I start my motor with the fuel selected off. I turn it on once the motor starts. as soon As I stop it, I shut the fuel off. It is not entirely foolproof but it is better than before.

Parallel to that I lowered the float level significantly.

Cheers!
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rovo
New member
Username: rovo

Post Number: 1
Registered: 06-2019
Posted on Sunday, June 30, 2019 - 09:17 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Hello out there,
I was wondering if there is anyone in the eastern Long Island area who is willing to give us a hand in starting up a 1910 Palmer U-1 motor? Our non-profit organization, the East End Classic Boat Society, has received the Palmer as a donation, and we have every intention of installing it into an antique launch that we have been rebuilding. The motor seems to have good compression and a working carburetor, but I'm not too sure about the igniter, its spark, and the timing thereof. Our problem is that we have no one with a good working knowledge of make and break engines. If you would like to lend us a hand with this project, please let me know. Many thanks.
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narrabay
Senior Member
Username: narrabay

Post Number: 51
Registered: 05-2016
Posted on Wednesday, July 03, 2019 - 12:10 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Miro is your float valve and seat (if so equipped) perfectly clean and do you have a good fuel filter?
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miro
Senior Member
Username: miro

Post Number: 1047
Registered: 11-2001


Posted on Sunday, July 07, 2019 - 10:06 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

yes to all ( I think) but clearly the facts on the ground do not bear that out - once again, out she comes for an inspection . . miro
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miro
Senior Member
Username: miro

Post Number: 1049
Registered: 11-2001


Posted on Wednesday, July 10, 2019 - 07:11 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

After a day out on the lake and having to be towed home - I went at the carb again.

I eventually found the float was way too high -

The solution was to carefully bend the arm to lower the float. That required numerous installs and removals because the only way to really test the float level is in the engine and trying to get it to run OK.

It took 3 tries to get it going well.

I thought about that arm work hardening and cracking. If I have to do it again, I'll anneal the brass arm before bending.

So, now the engine runs well, no dribbling.
The Virus has been removed.
miro
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chris_spring
Member
Username: chris_spring

Post Number: 23
Registered: 02-2019
Posted on Saturday, July 13, 2019 - 02:03 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Miro.
Glad to hear. Mine required a bit of McGyver'ing to get a usable float level. I am baffled as to why I had to do that since it appeared everything within the carb was in original condition. I assume it ran OK back in the day. It also calls into question whether my attempt at carving a new float was in fact a complete failure. Anyway, glad you have your problem solved. When I have found myself in the flooded situation it has taken me quite awhile to get the fuel mixture in the crankcase down to a level where I could get the motor to start in order to get home.

Cheers!
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narrabay
Senior Member
Username: narrabay

Post Number: 53
Registered: 05-2016
Posted on Saturday, July 13, 2019 - 11:04 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I'd be baffled too, how does a float tab get bent that much?

But very happy to see this issue solved Miro.
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ernie
Senior Member
Username: ernie

Post Number: 2533
Registered: 01-2002


Posted on Sunday, July 14, 2019 - 07:42 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

The float has most likely deteriorated, even though it may look new/good and today's fuel is nothing like the float was designed to float in.

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