Guys I have a serious question. First off I have a Holley 600 1850-3 and My carb has gas trickling down the rod up under the plastic secondary on the back left hand side. Is there a way to fix this it just started, And now that I have noticed it I am not wanting to drive the truck until I get it fixed. Scared of a fire. Please give me all the info you can muster a man in need of serious help. If any of you can give the part number that would help alot. Thanks so much for you guys help.

Keith

 

Come on fellows no help, not like you guys. OK I have a little more info I finally got the nerve to drive it today and when you first crank it she runs great and goes downhill from there the longer it runs it starts to spit and sputter but you stomp it and all that will stop until you are back at idle speed. I done some research on the holley site and where the gas is trickling from is called the secondary diaphram. I was under the impression that this was where the vaccum opened up the secondaries is there gas there too. Do I need to go ahead and get this carb a complete rebuild will this cure my problem. I sure would appreciate some advice on this problem guys.

Keith

 

Sounds like it's rebuild time to me.



Wiz

[link:www.clubfte.com/users/thewiz427/index.html|"Wiz's Place"]

 

Open the sight plug for your secondaries and see where the fluid is, you may have something in the seat of the sec. float.
Clint

 

Keith,
It sounds like the diaphram is torn in your secondary vacuum.
A standard holley rebuild kit will have what you need.
The carb doesn't have to come off just the black plastic can.
The Holley trick kit will have everything you need short of jets to hop that baby up, if your curious.
Buy yourself a holley carb book and become an expert. It's not hard.
KingFisher

 

Thanks fish I see we have them for $18.95. I am going to have to get me one and rebuild it myself instead of paying for the job. Just hope it's not to much for a novice to tackle.

Keith

 

Keith,
Don't pry or scrape your metering plates. Those are the plates between the bowl and carb body. Soak the carb if you have to. I tap on the components with a screwdriver handle to try and get them to (pop/fall) off. Take your time. Get the holley carb book and read it!
Good Luck,
KingFisher

 

OH NO!
:-staun
Not another novice attempting a carb rebuild! Do yourself a favor and find an experienced carb man to rebuild it.

 

It sounds like either the float is too high, or there is a piece of dirt in the needle and seat. There is no gas anywhere near the secondary diaphram. The only way that it can get into the diaphram is if the front barrels are full to the top with gas. The secondary diaphram gets it's vacuum from a hole in the front pass. side venturi. I am quite sure that the gas is puddling up on the rear throttle plates and running out of the side of the throttle shaft where the rod connects to the shaft.
A rebuild is not in order unless the float has a hole in it and is full of fuel. I would try to adjust the rear float level first. To do this: With the truck iding(if it will), remove the screw plug in the side of the rear bowl. It is on the passenger side. Then, loosen the screw on top of the rear bowl(the one that has a nut under it) just a little and take a 5/8 wrench and try to tighten down the nut until the gas level is just below the bottom of the threads of the sight screw.
If it does not drop the level, turn off the engine, back the nut up until you can pull the assembly out by hand( leave the screw in the nut so that the nut will not come off of the needle and seat. Look at the needle and seat assembly in the light. In the middle, there is a pointed seal that goes into a hole, look to see if there is any debris in there, if so, blow it out and reinstall the assembly. Insert the assembly into the hole, put just the nut over it and screw it most of the way down, then put the screw back in and tighten it. Restart the engine and check the fuel level, if it is low, them slightly loosen the screw and back the nut up until the fuel level is just below the sight hole. It should splash out a little if you rock the truck to the side. Then tighten the top screw and reinsert the sight screw and you are ready to go.

If this doesn't work, then you may have a bad float.
Contact me if you need any further assistance.
Jimmy

P.S. Make sure that you have a good inline fuel filter, Holley's won't tolerate any dirt in them.

 

Keith, it looks like Lxman is willing to lead you thru the process. Keith will now owe you a case every Christmas. -hehe! Have fun guys and good luck!

 

Hey tourque you are right,owe him alot! Jimmy has helped me before he's a good man, and really knows his stuff. Thanks again for all you guys help. It really means alot to me.
Thanks
Keith

 

On a side hung Holly, the secondary float will slowly bend the adjusting tang up. This is caused by the constant "full of fuel" condition splashing up and pushing the float up. Each time is only a small fraction of an inch, but over time it causes a secondary flood. Check the secondary sight plug. If gas is running out then remove the rear float bowl and re-set the float. You can try adjusting it from the top first but normally you have to remove it to get it right.

 

Ok guys haven't got to do any work on my truck as of yet because of rain. But today I had to go out and same thing she started acting up so I just raised the hood and tapped the back bowl of carb with screw driver and it leveled out and quit acting up after a few minutes. Could this have dilodged some trash or something. I drove it a while and still no troubles idles good and smooth. First thing in the morning I am going to get me a fuel filter on this thing. All help and ideas from you guys are a big help. Thanks to all of you who helped.

Keith

 

Stuck/worn needle valve assy?

 

Probably a small piece of crud. I can't say how important a good fuel filter is. The smallest piece of crud will stick a needle valve open. Install that filter, and good luck to ya.
Jimmy