Help - about to pitch my carb out the window

[Magnum]

Grrrrrrr!!! I can not get my BBR-660S-equipped 169 CI engine to idle! As some of you may have seen from my last post, I am cleaning up my fuel system after discovering a well-marinated paper bag in my gas tank. I have:
1. dropped and cleaned the tank;
2. blown clean the line to the fuel pump;
3. found split in decayed rubber line from fuel line to pump intake (causing loss of suction), replaced same;
4. found and corrected poor seal on fuel separator bowl (causing loss of suction);
5. rebuilt fuel pump (was in great shape);
6. blew clean the float valve fitting (paper gunk in it);
7. cleaned fuel bowl on carb (paper gunk in it);
8. disassembled carb, blew paper wads clear of fittings & springs

and I STILL CAN'T GET THE DARN THING TO IDLE!!!

It'll start up and run if I open the throttle to about half. It'll rev strong on the high speed fuel circuit, but if I try to let it settle down to idle, it just dies.

Any ideas on what I might be missing? Do I need to pull every single plug from every gallery on the carb and auger them out? Any suggestions would be appreciated.



Mike "Magnum" Harm
Fort Leavenworth, KS

[Mike Van Veghten]

In an answer...yes you do have to clean every single passage. Espicially if you've had that much garbage in the system.
Next to the booster ventury....there are two very small holes in the body (the holes appear to go down or toward the manifold). One is for low speed, one is for cruise/high speed.
Make sure these are completely clean.

Mike

[Swifster]

Mike, this is why carb bodies are usually dipped in solvent to clean out all the little circuits cast into them. These need to be completely clean of debris. If you have the service manual, it will guide you thru the process. A typical carb rebuilt kit will also have a set of instructions. Do not use gasoline as a cleaner. It can be absorbed thru the skin and cause blood poisoning. Use a carb type cleaner. I found the following website, and while it's for a AMC unit, the principle is the same.

http://www.amxfiles.com/resource/tech/carb.html

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Tom - Valrico, FL

1964 Studebaker Daytona

[Roscomacaw]

I've told here before of a carb that gave me fits even tho I'd kitted it at least twice and had had it apart I don't know HOW MANY times before in one mad teardown, when blowing out the passages, a bit of lint blew out of one hole and drifted to the ground. AHA! Sure enough - after that the engine purred forever more![}]

Miscreant adrift in
the BerStuda Triangle


1957 Transtar 1/2ton
1960 Larkvertible V8
1958 Provincial wagon
1953 Commander coupe

[DEEPNHOCK]

As well as what the others have posted about the carb (which is spot on advice)...
Try checking for a vacuum leak at the intake manifold to the head.
Crank up your butane torch (without lighting it) and pass it by the intake ports to the head. If the rpm changes, you probably have a vacuum leak. (WD40 works for this too...as well as any flammable stuff you could spray on it)
Just watch the eyebrows[}]
Jeff[8D]

[Magnum]

Thanks, all. I have to go out of town this week, so I'll borrow my neighbor's air compressor and pick up a five gallon vat of carb cleaner and go to town.

[8D] It'll feel so good when it fires up and idles. [8D]

Mike "Magnum" Harm
Fort Leavenworth, KS

[Dick Steinkamp]

quote:Originally posted by Magnum
...and pick up a five gallon vat of carb cleaner and go to town.

A 1 gallon can will work fine for that little carb. Available at most FLAPS.

[DEEPNHOCK]

BTW Mike..
I love your tag line pic!
Jeff[8D]

quote:Mike "Magnum" Harm
Fort Leavenworth, KS

[Magnum]

[quote]Originally posted by DEEPNHOCK

BTW Mike..
I love your tag line pic!
Jeff[8D]


Thanks, Jeff. I snapped it from my front porch one day while playing around with the digi cam. Despite my troubles with Ol' Bucky's carb, I'm still enjoying owning my Studebaker.

Mike "Magnum" Harm
Fort Leavenworth, KS

[Magnum]

Woohoo!!!! I tore the carb down again tonight, used my friend's air compressor to blow out the passages and sprayed in carb cleaner for good measure. I did not find anything blocking any passage. I paid extra special attention to seals and gaskets putting it back to gether, and it fired right up!

I'm happy.[8D][8D][8D]

Now I can go to the junk yard tomorrow.

Mike

Mike "Magnum" Harm
Fort Leavenworth, KS