Holley flooding
Thread Starter
Instructor
Joined: Feb 2009
Posts: 178
Likes: 2
From: York UK
Holley flooding
My '69 350 manual was running well but it started cutting out when I rolled up to the lights, and I had to turn up the idle speed to keep it running. When I looked into the Holley 600, petrol was pouring into the rear two chambers, and the plugs are very sooty. It looks like the floats have started to stick and cause it to overflow, but how would I adjust it so I can get it back to the correct setting?
Burning Brakes
Joined: May 2006
Posts: 774
Likes: 1
From: Round Rock Texas
My '69 350 manual was running well but it started cutting out when I rolled up to the lights, and I had to turn up the idle speed to keep it running. When I looked into the Holley 600, petrol was pouring into the rear two chambers, and the plugs are very sooty. It looks like the floats have started to stick and cause it to overflow, but how would I adjust it so I can get it back to the correct setting?
Good luck.
Le Mans Master
Joined: Aug 2003
Posts: 7,720
Likes: 12
From: Chattanooga TN
sounds like needle and seat, but need more details.
Tech Contributor
Joined: Aug 1999
Posts: 14,375
Likes: 6,375
From: At my Bar drinking and wrenching in Lafayette Colorado
Pull the needle/seat assemblies out, blow them out real well, and re-install them with a little lube on the o-rings and gaskets. Set the float levels to the bottom of the sight holes and you're set to go. This is a normal maintenance/procedure item on a Holley style carb, so you may as well start getting good at it...
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