Carb rebuild or replace?

[Mercruisermike85]

looking for opinions on rebuilding vs replacing carb. Outside of cost pros/cons of each

 

[porscheguy]

Cost aside, there is no benefit to rebuilding a carb if replacement is an option. One is a brand new component, the other is an old part that’s been cleaned up and had some wear items changed out. Even though you specifically wanted to eliminate cost from the discussion, the fact is, if cost weren’t a consideration brand new is always the way to go.

 

[Scott Danforth]

I disagree

$30-50 for a gasket set and a half hour of time to clean a carb is easier on the wallet than a new carb. unless the cab is physically damaged I would rebuild.

common wear parts come in the rebuild kit and new doesnt = good. plenty of defective parts including carbs come out of the box.

as long as fuel comes from organic compounds that start to go bad shortly after the refining and distilation process, you will always have fuel system maintenance.

 

[dollar7499]

Hopefully your carb is already tuned for your setup, and once you clean it you just double check your idle mixture.

 

[wellcraft-classic210]

If you have the SKILL'S a rebuild can definitely save $. If you have an understanding of what the CARB IS NOT doing well and can pinpoint what the ROOT CAUSE is your very likely to succeed. Otherwise a replacement requires less time & skill.

Whats the Carb type and Problem set your experiencing ? I ask as you may want to do some preliminary investigation before disassembly if you decide to try a repair and or rebuild.

 

[Mercruisermike85]

It’s a 2 barrel 3.0 turn key start carb so there is no traditional choke. I believe the float maybe overfilling and causing the motor to flood coming off plane after a good run on plane. Carb looks like it’s never been taken apart and is a 2009

 

[TunaFish389]

Try s rebuild kit and a new float.. Most kits don't come with a new float.. This is some good info but not sure if it will apply to 2009 since it was released ten years earlier.

 

[Scott Danforth]

It’s a 2 barrel 3.0 turn key start carb so there is no traditional choke. I believe the float maybe overfilling and causing the motor to flood coming off plane after a good run on plane. Carb looks like it’s never been taken apart and is a 2009

either float level, or fuel pump may have failed. is the clear hose from the fuel pump dry, or does it have fuel in it? if it has fuel in it, you have a fuel pump issue.

 

[Cortes100]

With a new carb, do they come to the exact specs and setup for your engine?? Or does one carb fit several engines? Do you take the new carb out of the box, install it, and the engine magically runs perfect? Point being, a new carb may need to be fine tuned to make it run properly on your specific engine.
I would try the kit.

 

[Mercruisermike85]

No there is no fuel in the overflow line from the carb to the fuel pump

 

[wellcraft-classic210]

When you say --- I believe the float maybe overfilling and causing the motor to flood coming off plane after a good run on plane.

Does it run OK when on plane & what exactly happens when coming off plane. Sputter / stall / rough idle / black smoke / other ?

Knowing that in may help pinpoint the issue (s) to look for.

 

[Mercruisermike85]

Runs great on plane all the way up to wot no problems, and yes coming off all those happen except black smoke

 

[Scott Danforth]

With a new carb, do they come to the exact specs and setup for your engine?? Or does one carb fit several engines? Do you take the new carb out of the box, install it, and the engine magically runs perfect? Point being, a new carb may need to be fine tuned to make it run properly on your specific engine.
I would try the kit.

no, you need to adjust/tune.

there is no mechanic in a box

 

[wellcraft-classic210]

Could be some debris in the bottom of your float bowl blocking the idle passages at times // If it is be sure your fuel filter is OK or it will recur.

The experts here may have some added thoughts


If you proceed with a rebuild :

Be sure to blow compressed air and carb cleaner such as Gumout jet spray through any passages. Fuel moving through holes of a specific size is sensitive to anything blocking the flow and in turn causes poor engine behavior..

The gaskets will likely tear and the rebuild kit will provide new ones.

Their are a lot of good you tube videos these days on carb rebuilding -- Time well spent usually


If you understand the Idle circuits, Venturi operation, Accelerator pump and choke theory's it will be a good knowledge base. ( suggest googling as needed for that info. )


I have pulled the top off of those while on the engine & got them going again by cleaning out the float chamber with a rag on cars. ( Back in the good ol days" ) But that's not as risk free of a fix as pulling it off and cleaning everything because the passages can be cleaned better once off the engine.


Once your up and running:
Its a good idea to clean the outside of the card with spray cleaner from time to time also -- but usually the inside is a separate issue with cleanliness of the float bowl driven by incoming fuel cleanliness.

 

[Mercruisermike85]

That’s all great info welcraft-classic 210 and I appreciate it...if we all learned one thing from My cousin Vinny is we always pull the carburetor off the manifold