carb venturi leaking #2
escobar
Jeeper
- Posts
- 230
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- Location
- Mena, AR
- Vehicle(s)
- 1976 CJ5 258. MC2150 carb, PSC steering, Team Rush upgrade, 1 piece rear axles, all electronics relayed. Coming soon: Herculined tub, camo paint- and a bunch of filthy, muddy kids!
Hey guys. '76 CJ5 AMC 258 i6 / 4.2l with an MC2100.
I've soaked the carb overnight, blew out everything, it was clean to begin with. Then rebuilt everything in it except the throttle shaft which is tight. Some of you may remember this problem-
After shut down my venturis still drip. Before, it was just one that dripped A LOT, after the rebuild they both drip- but about the same volume of gas combined. This results in flooding, resulting in a long start time and start up fouling of the brand new plugs. As soon as she fires up she cleans up fast. (new plugs with TeamRush short mod)
The float needle shuts down nicely, power valve and accelerator pumps are new with the rebuild.
I'm thinking it has to be fuel line pressure. I'm thinking of buying a new fuel pump.
I've kept the gas cap off, and no difference as well. If I disconnect the line from the carb it releases quite a bit a pressure.
What is causing this? I'm sure my tank is venting. The line isn't close enough to the block or exhaust to be boiling gas. Any ideas?
I'm friggin' stumped.
I've soaked the carb overnight, blew out everything, it was clean to begin with. Then rebuilt everything in it except the throttle shaft which is tight. Some of you may remember this problem-
After shut down my venturis still drip. Before, it was just one that dripped A LOT, after the rebuild they both drip- but about the same volume of gas combined. This results in flooding, resulting in a long start time and start up fouling of the brand new plugs. As soon as she fires up she cleans up fast. (new plugs with TeamRush short mod)
The float needle shuts down nicely, power valve and accelerator pumps are new with the rebuild.
I'm thinking it has to be fuel line pressure. I'm thinking of buying a new fuel pump.
I've kept the gas cap off, and no difference as well. If I disconnect the line from the carb it releases quite a bit a pressure.
What is causing this? I'm sure my tank is venting. The line isn't close enough to the block or exhaust to be boiling gas. Any ideas?
I'm friggin' stumped.