460 w/4 bbl "flooding"

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May 30, 2005 | 06:57 PM

Rmvr53

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Cross-Country

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460 w/4 bbl "flooding"

well, after 130 pages of arcives I robably missed the same topic but here goes.

I have an 83 "C" class RV on E350 chassis and 460 4 bbl. Not sure of the carb but I think is a 4180 - only adjusting screws are the 2 on the front and small caps over the float adjustments on front/rear bowls.

Heres the problem - at idle it loads up like its flooded. After driving for just a few miles, its smokin out the pipe (black) like its still flooded. The auto choke appears to be opening up ok. What do I check next or ?? HELP!! as I need the unit this coming weekind..

thanks

Bill

May 31, 2005 | 11:04 PM

LxMan1

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From: Louisville,Ky.

Sounds like a stuck needle and seat. Possibly a small piece of debris has gotten into one of them. If possible, look down into the carb while idleing and see if gas is dripping into the front or rear barrels. If so, then the needle and seats must be checked. Could also have a pin hole in a float causing it to not float properly.

Jun 1, 2005 | 08:45 AM

Putt

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Joined: Jul 2003

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From: Colville, Washington

Could also be the bad power valve problem, I don't think the 4180 series had valve blow-out protection from the factory.

Jun 8, 2005 | 02:36 PM

rlh

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From: Florida Hill Country

Sticky/saturated floats?

Jun 9, 2005 | 12:30 AM

termyt00

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From: Close to Mr. Anderson

yup all of the above... but personally if it were my RV, I'd switch to a Edelbrock/ Carter, why ...well they're just better! that Holley will always require a rebuild if you let it sit too long...trust me i've done it to many times to count....

Jul 5, 2005 | 09:09 AM

wally2117

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Joined: Jul 2002

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Had the same trouble with mine last week.

A debris in the needle of the back bowl. fuel saturated the carb and... fill the exhaust.

caboom! exhaust is shut...

Jul 5, 2005 | 11:41 PM

Rmvr53

Thread Starter

Cross-Country

Joined: Mar 2005

Posts: 51

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Fixed It!!

rebuilt the beast...found the "Idle enrichment valve" to be able to spin in its housing - as in shot - nice "smooth" (burble) idle now.

thanks for the direction/guideance

Bill