I'm not very knowlegeable when it comes to carbs, but I'm learning a lot. I purchased a modified carb from a guy here on the forum and he said it was set up to scca specs. Anyway, I installed it and it just dumps fuel into both the primaries and secondaries. What I mean by dumps, is my wife was standing in the entrance of my garage and she wanted to know what that sound was! She was hearing fuel pouring into the carb!! Is this the float level adjusted wrong?

 

the reason of that is mayve that the carb isint pressurized enought to keep the gas up in the chambers

 

Make sure that one of the floats isnt stuck in the up position. the same thing happened to me and that was the prob. uncrew and take off the top part

 

Also...what are the two screws directly above each other, driver's side down low on the carb. I know one is a mixture screw...what's the other and which is which?

 

is the fuel pump stock????

 

The float bowl solenoid is not hooked up.

 

Well, I know about as much about carbs as I do about brain surgey, but if Sterling says so... Well, I bet my car on it...

All bow before Sterling, lord of the carb

 

Lord of the carb is right. Isn't that the solonoid on the passenger side of the carb that is at the top of the carb kinda off to the side?

 

it's the wire that plugs in to the harness, right under the fuel inlet "y" piece, it opens up so the floats can vent. it's an even worse problem when you have boost it needs a constant 12v signal.

 

Actually there is nothing hooked up on this carb! ;-)
I'll take a look and see about the float bowl solenoid.
The fuel pump is not stock. It's a $35 universal from the parts store down the street. It does have larger inlet and outlet lines than the stock pump. Is this a problem, or no?

 

Well, if you have an aftermarket pump you'll probably need an aftermarket fuel pressure regulator too...

 

Is this correct solenoid?

 

yes. Mine is also disconnected and I too am having problems. I sent Sterling a PM regarding the issue with mine. I would assume that it is not needed as it was removed by Sterling or Carl. Having a fuel pressure regulator would possibly help but I am personally having problems with mine. Is it simply dripping fuel or is it really gushing it? Could be your universal is for a fuel injected vehicle and therefor is shooting (not sure of exact numbers) 50 PSI when all you need is ~3 PSI. That would definately cause problems. Also would blow the seal on a low pressure regulator.

 

Cant help ya, but I can praise ya. That is a nice looking carb! I love how your work bench is so clear of junk. (unlike mine)! Way to keep that shop clean!!!

 

Ok, this is a universal fuel pump for carbed vehicles.
I don't think I'm having the fuel dumping into the carb problem anymore.
I just now replaced the item I circled in the picture below. The one that came on this modified carb I purchased had the wire cut so I pulled this sensor off my stock carb and connected the wire. My newly installed plugs were soaked, so I dried them off and reinstalled them. This carb has no choke, so I floored it and it fired up pretty much right away. As soon as it fired it revved to 4k, so I shut it off. It wouldn't fire again. I looked into the sight glass on each side of the carb and it looked like fuel was completely covering them. I pulled the carb, (3min. 45sec!!!) pulled off the top of the carb and now it looks like fuel is halfway up the glass evenly on both sides. Now the carb is back on my workbench waiting further advise! ;-)
I'll look up the float speacs and see how they are, but if anyone knows that off the top of their head, shoot it to me. Thanks,

 

Alright, set the floats according to a document I found that Sterling had wrote. Actually only one was off by a hair. Anyway Installed the carb and got it to start consistantly, but when it starts it revs to 6k and I can't do a thing about it other than shut it off. I'm certain it would rev higher if I let it. Ideas? Also, I replaced both of the items pictured above in my previous posts. I figure on or the other is the float solenoid!
Anyway, now I'm deaf since I have only headers installed and no exhaust yet!

 

part of the linkage has this little swing arm looking deal... i'm sure it's hangin down and getting caught forcing the throttle to stick. either that or something else on the throttle linkage side. just examine real well in there. does the throttle have resistance when you push it down?

 

Yeah, I agree. Gotta be a linkage issue.

 

Yeah, I'll go check again, but I did already briefly. We'll see.

 

I checked the linkage and it all snaps right back into place. I opened and closed it a few times and tried to start it again. It fires up pretty well, but as soon as it fires it's like it's floored. Aaaaaaaaaaaagh!

 

-That's just...well, goofy.
It's far from true, for one thing.

...And it doesn't get you a discount, either!

And if you think I know so much about carbs, where do ya think I learned it all?!

 

Choke cable?
Fast idle linkage (choke cable)?
Throttle cable?

Check for slack.

You didn't mess with the locked set screw for the secondary T-shaft, did you? That's a !!!

 

Well, I don't think I've seen anyone on the forum who know as much as you (at least nobody who speaks up)...

I don't need a discount anyways... I'm pretty happy with my EFI

My wife on the other hand, might want to go carb shopping in the spring...

 

Just take a quick look down into the throats of the carb and see if the throttle plates are closed, or stuck open. That will clear up the stuck linkage possiblity. After that, tap on the top of the carb with the plastic handle of a screw driver a few times, just to make sure that the float needles are properly seated. Of course, this is all a bunch of long shots...

Most likely, I think you're just producing too much fuel pressure and its overloading the carb. You can spend money on a fuel pressure gauge (keep in mind that the cheap ones are pcs of ****), or you can bite the bullet and get a good fuel pressure regulator, or find a stock fuel pump and give that a try. This is also a complete guess, but at least its my guess...

 

Sterling: If I say really nice things will it get me a discount???

I had the same prob when I put my carb back on after the rebuild drove me crazy for a day or too. It ended up being that the cruise control cable was getting caught and staying open. When i looked down in the carb it didnt look like the butterflys where open but they where open enough to give me a 3.5k idle. Also get someone else to look at it. It always helps to have a second opinion. fresh brain ya know.