Post by: Tikotiko on August 04, 2020, 09:40:09 PM
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Post by: angermgmt on August 05, 2020, 06:43:26 AM
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Post by: Tikotiko on August 05, 2020, 07:05:35 AM
Have you checked for vacuum leaksYessir but i did learn a few things last night. But I'd rather get confirmation from you when hooking up the vacuum gauge to tune the carburetor does it hook up to the manifold or to the carburetor
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Post by: angermgmt on August 05, 2020, 07:21:48 AM
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Post by: Tikotiko on August 05, 2020, 07:51:23 PM
Mine hooks to the manifoldDid an experiment today. And noticed during experimenting that whenever i take the plug cover off the vaccum port on the bottom of the carb fuel comes out. That doesnt seem right?
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Post by: angermgmt on August 06, 2020, 04:28:58 AM
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Post by: Flusher on August 06, 2020, 07:44:55 AM
Did an experiment today. And noticed during experimenting that whenever i take the plug cover off the vaccum port on the bottom of the carb fuel comes out. That doesnt seem right?You mean the thing the screwdriver is touching? That is a manifold vacuum port and fuel should not come out of there under any conditions.
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The larger brass plug with the slot is the float bowl fuel level sight plug and should have fuel drip out as posted above.
Post by: angermgmt on August 06, 2020, 07:58:38 AM
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Post by: Tikotiko on August 06, 2020, 01:17:36 PM
You mean the thing the screwdriver is touching? That is a manifold vacuum port and fuel should not come out of there under any conditions.Yes the vacuum port. I took the plug off and some not alot but some fuel came out
The larger brass plug with the slot is the float bowl fuel level sight plug and should have fuel drip out as posted above.
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Post by: Tikotiko on August 06, 2020, 01:18:27 PM
It should only dribble out if you shake the boat side to side.I know thats the site plug for float adjustment
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Post by: Tikotiko on August 06, 2020, 01:19:14 PM
No the brass screw above that. That looks live a vacuum rube your touching. Don’t think fuel should come from thatAnd yes the vacuum port. When i took the rubber plug off a small amount of fuel came out
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Post by: angermgmt on August 06, 2020, 02:31:39 PM
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Post by: Flusher on August 06, 2020, 08:46:53 PM
It's possible that a blown power valve could leak there. It could also be a cracked main body or metering block. Hopefully it is as simple as a gasket failure.
That would be one explanation for why you achieved best idle with the adjusting screws all the way in (out richens the idle).
My guess is that fuel is leaking into that area, where it is remaining in liquid form, after the engine has stopped running.
After it sits for a while, is the primary float bowl empty?
Post by: Tikotiko on August 07, 2020, 05:51:03 AM
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Post by: angermgmt on August 07, 2020, 07:13:03 AM
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Post by: Tikotiko on August 07, 2020, 01:45:03 PM
Your boat but new gasket, power valve and base plate inspection cost almost nothing. With that said 750 Holley is a good call.I just did the rebuild on the 3310 which is a 750 cfm but ive heard nothing good about the vacuum secondary on a boat. So to get on the water and finally use this thing. Im starting with a brand new holley 750cfm with mechanical secondary but holley has the quick fuel and the brawler on their website plus several factory reconditioned carbs at a decent price. Im also going with msd if i continue to have problems after the new carb.
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Post by: Tikotiko on August 07, 2020, 01:47:51 PM
That vacuum port opens into this bathtub shaped cavity in the baseplate. The round hole between my finger and the screw is the vacuum source for the power valve. There are channels connecting the vacuum port and the power valve hole to both primary throttle bores.Just going to buy a new carb. I rebuilt this one but im over it. 2 years of on snd off messin with it and i still havent seen the river with it. New carb coming but holley has the quick fuel line and the brawler im having trouble choosing .
It's possible that a blown power valve could leak there. It could also be a cracked main body or metering block. Hopefully it is as simple as a gasket failure.
That would be one explanation for why you achieved best idle with the adjusting screws all the way in (out richens the idle).
My guess is that fuel is leaking into that area, where it is remaining in liquid form, after the engine has stopped running.
After it sits for a while, is the primary float bowl empty?
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Post by: angermgmt on August 07, 2020, 01:56:26 PM
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Post by: Tikotiko on August 07, 2020, 04:37:11 PM
Vacuum secondaries are mor fuel efficient. Mine work great. Keep us posted.Im desperate. I just want to see the boat on the river.
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Post by: angermgmt on August 07, 2020, 04:40:42 PM
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