Carb issues, bogs at high RPM, where to buy refirb/new?

[Captain Ben]

I have a carb that has some clogging. I am considering buying a refurb. I believe the serial number for the one I need is:

3310-807764A1

It is a 1988 Merc 4.3L (superceded from: 3304-9565A1)

I know SEI makes aftermarket parts that are 1/2 the cost of real merc. Is there an aftermarket carb manufacturer? I don't see the model i need on iboats.

What is the best priced option?

Ben

 

[NHGuy]

Re: Carb issues, bogs at high RPM, where to buy refirb/new?

I was web surfing and came across this. http://www.i-5automotive.com/page4.html I don't know how they are but they sound good.

 

[dude26420]

Re: Carb issues, bogs at high RPM, where to buy refirb/new?

you can try www.carburetor.ca its in canada, shipping a little pricey, but easy website to use, only place i could find parts for my boat at good prices

 

[christoner2002]

Re: Carb issues, bogs at high RPM, where to buy refirb/new?

I wouldn't use I5 auto for a carb. My quadrajet wasn't even close to right.
It had two different secondary metering rods, neither of which were right.
It had a terrible bog when the secondaries opened, and ran lean on top end.
Mine is sitting on a shelf. Bought a new Edelbrock, and it works great.

 

[sea wolf]

Re: Carb issues, bogs at high RPM, where to buy refirb/new?

If it's not pitted, why not just rebuild it?

 

[occarvers]

Re: Carb issues, bogs at high RPM, where to buy refirb/new?

I purchased a re manufactured solex carb from these guys http://www.flyingfishcarburetors.com/. Works great. The prior carb was rebuilt twice by two different people and it still would not run right. Bolted on the new carb and problem solved.

 

[sethjon]

Re: Carb issues, bogs at high RPM, where to buy refirb/new?

Best option is to rebuild it yourself.

 

[joenapier]

Re: Carb issues, bogs at high RPM, where to buy refirb/new?

Bogs at high RPM...

I had a pecular issue that you might want to look into. I get the feeling others have this issue to and it took me a while to find the issue (with a lot of help from this forum).

My engine would run at the proper WOT for about 30 seconds and then bog down. I would return to idle and then run it back up to WOT - same thing after 30 seconds or so. It seemed get worse as the day went - bogging at lower and lower rpms. At one point, I could not run over 1500 without a problem.

My issue was the fuel pump creating a vacuum in my fuel line / fuel tank. Either my anti-siphon valve was stuck or I had crud in my fuel line. Once I replace the fuel line, the anti-siphon valve, and the vent line all the problems cleared up.

 

[Captain Ben]

Re: Carb issues, bogs at high RPM, where to buy refirb/new?

Bogs at high RPM...

I had a pecular issue that you might want to look into. I get the feeling others have this issue to and it took me a while to find the issue (with a lot of help from this forum).

My engine would run at the proper WOT for about 30 seconds and then bog down. I would return to idle and then run it back up to WOT - same thing after 30 seconds or so. It seemed get worse as the day went - bogging at lower and lower rpms. At one point, I could not run over 1500 without a problem.

My issue was the fuel pump creating a vacuum in my fuel line / fuel tank. Either my anti-siphon valve was stuck or I had crud in my fuel line. Once I replace the fuel line, the anti-siphon valve, and the vent line all the problems cleared up.

Where did you get your anti-siphon valve? Is there a vacuum test I can perform to test for his?

Where is the anti-siphon valve located?

 

[joenapier]

Re: Carb issues, bogs at high RPM, where to buy refirb/new?

It is at the tank where the fuel line goes in. I used to think it meant a valve that prevented people from stealing your gas, but it is a device that prevents gas from freely flowing out under gravity (siphoning) if, say, your tank is at a higher elevation than a leak in the line.

Mine was pretty non-descript - just a brass fitting with a check ball inside it.