Have you had this problem with Holley Carb? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

STBR · 08-31-2003, 11:37 PM

For some unknown there is no fuel coming out of the (as you are seated in the vehicle) right primary booster venturi. And, the left appears to be dripping fuel down into the body when you rev the engine.

It's a 9834-3 Holley 4 bbl carb that has been running just great. The only thing I had done immediately prior to this problem was change the primary jets, something I've done many times over the years without a problem. I took the carb off cleaned all passages, including the ones in the metering block, no change. Installed a rebuild kit, no change. Screamed bad words and threw tools, no change.

Vehicle ran the best it ever has before this, I can't see how changing the jets could have created his problem. What's your best guess as to the problem? Thanks in advance for your help.

**68 Stepside** · 08-31-2003, 11:51 PM

Possibly a blown power valve? Purely a guess. Good luck.

TIMSPEED · 09-01-2003, 04:17 AM

Try lowering the primary float level. I had fuel coming out of the booster venturi, and it turned out my float level was too high...just another guess though...

STBR · 09-01-2003, 11:37 AM

Appears it was the needle & seat causing the problem. Something must have gotten into it when I replaced the jets. I didn't replace the needle & seat during the rebuild cause I didn't think it needed it. Possibly the next time I'll do a little less thinking

08-31-2003, 11:37 PM	#1
STBR Registered User Join Date: Aug 2003 Location: Greenville, Oh Posts: 30	Have you had this problem with Holley Carb? For some unknown there is no fuel coming out of the (as you are seated in the vehicle) right primary booster venturi. And, the left appears to be dripping fuel down into the body when you rev the engine. It's a 9834-3 Holley 4 bbl carb that has been running just great. The only thing I had done immediately prior to this problem was change the primary jets, something I've done many times over the years without a problem. I took the carb off cleaned all passages, including the ones in the metering block, no change. Installed a rebuild kit, no change. Screamed bad words and threw tools, no change. Vehicle ran the best it ever has before this, I can't see how changing the jets could have created his problem. What's your best guess as to the problem? Thanks in advance for your help.

08-31-2003, 11:51 PM	#2
68 Stepside huh? Join Date: May 2000 Location: Washington, Illinois Posts: 5,690	Possibly a blown power valve? Purely a guess. Good luck. __________________ Someday when I'm lonely, Wishing you weren't so far away, Then I will remember Things we said today. RIP El Jay

09-01-2003, 04:17 AM	#3
TIMSPEED Join Date: Jan 2003 Location: Modesto, CA Posts: 1,321	Try lowering the primary float level. I had fuel coming out of the booster venturi, and it turned out my float level was too high...just another guess though... __________________ I have a few cars... See Them Here

09-01-2003, 11:37 AM	#4
STBR Registered User Join Date: Aug 2003 Location: Greenville, Oh Posts: 30	Appears it was the needle & seat causing the problem. Something must have gotten into it when I replaced the jets. I didn't replace the needle & seat during the rebuild cause I didn't think it needed it. Possibly the next time I'll do a little less thinking



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