carb help, Holley dbl pump.

[NORMAN BARNARD]

Just because it has power valve plugs it doesn't mean the gaskets are not leaking. I've fixed a lot of complaints lately because of gasket failure. To check to see if that's the problem fill the bowls to normal level, remove from motor and put on a carb. Fixture to elevate at least 2 inches. Wipe the bottom of the baseplate to make sure it's dry, let it set for a while, recheck to see if it's leaking, if it is it will becoming out the p/v vac. Port in the base plate. Then proceed to disassemble and repair. Caution: With the holley p/v gaskets it's easy to over tighten them and then they trar apart. Not so if they are after market with the teflon coating

hope this help's.....norm

[Keith 944]

Originally Posted by NORMAN BARNARD

Just because it has power valve plugs it doesn't mean the gaskets are not leaking. I've fixed a lot of complaints lately because of gasket failure. To check to see if that's the problem fill the bowls to normal level, remove from motor and put on a carb. Fixture to elevate at least 2 inches. Wipe the bottom of the baseplate to make sure it's dry, let it set for a while, recheck to see if it's leaking, if it is it will becoming out the p/v vac. Port in the base plate. Then proceed to disassemble and repair. Caution: With the holley p/v gaskets it's easy to over tighten them and then they trar apart. Not so if they are after market with the teflon coating

hope this help's.....norm

thanks. thats a good idea, will check that tomorrow.

BTW. i appreciate everyones input, we will fix this issue for sure!

[BlueOval Ralph]

When housing Holley power valve plugs make sure that the head of the plug is not hitting. The main body there is a boss that sticks up on the main body, grind the casting flash off the plug can use a belt sander, lath or big file. When you take the carb apart inspect the body if it was hitting you should see it on the plug and main body. If it is hiting it keeps the metering block from fully seating on the main body.

[Keith 944]

ok, i found whats up, left bowls full last night. today front is empty. now i know where to look. more later....

[Ed Wright]

Originally Posted by Keith 944

ok, i found whats up, left bowls full last night. today front is empty. now i know where to look. more later....

If the front throttle blades don't get wet when it sits the primary power valve gasket is leaking.

[jmarkaudio]

I've seen some less than stellar PV gaskets lately, the best ones out there now are some red ones from Quick Fuel. It's the same material they use on their new float bowl and metering block gasket. There used to be some really good blue teflon coated ones, I wish I knew where they came from.

[NORMAN BARNARD]

Jmarkaudio......try braswell carburetors in tucson, az. Part number for teflon coated p/v gasket is 082501..........norm

[Alex Denysenko]

Originally Posted by NORMAN BARNARD

Just because it has power valve plugs it doesn't mean the gaskets are not leaking. I've fixed a lot of complaints lately because of gasket failure. To check to see if that's the problem fill the bowls to normal level, remove from motor and put on a carb. Fixture to elevate at least 2 inches. Wipe the bottom of the baseplate to make sure it's dry, let it set for a while, recheck to see if it's leaking, if it is it will becoming out the p/v vac. Port in the base plate. Then proceed to disassemble and repair. Caution: With the holley p/v gaskets it's easy to over tighten them and then they trar apart. Not so if they are after market with the teflon coating

hope this help's.....norm

we see this alost daily with many of our sytreet /strip customers we switched over to AED Holley small parts a couple of years ago when we saw saw over 90% of Holley's stuff coming from China. very diss heartening when you are selling a Weiand intake manifold labeled machined in USA from a China.