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« on: June 10, 2023, 03:52:15 PM »
Well, I took a ride of about 50 miles in one of my cars. Car ran great! 10 days later, got in and fired it up and it won't idle. It WANTS to, but dies in about 10 seconds. It's a 4150 780 Vacuum secondary. If you try to keep it running it does a suck-air kinda thing and goes shss shss shss shss and dies. I got in and revved it out of the idle circuit and kept it running and went down the road. Pulls great, floored it a couple times and it went like hell. Came to a stop sign, down shifted, got into first and pushed in the clutch and it died right before I came to a stop. When you try to start it, it takes ALOT of turning over without giving it any gas and then finally it starts. I looked in the carb and it is squirting gas in well. But that's when I am racking the throttle. But after letting it go back down to idle it dies in a few seconds.
I pulled the carb. Pulled the bowls and metering plates. Installed new 6.5 power valves, cleaned it all up and blew it out. Installed all new gaskets. Set the float bowl height. I didn't do anything else, like pull the needle and seat etc. I reinstalled it and it did the EXACT same thing. I did something I don't normally do. And that is pull a part from a great running car and use it for testing. BUT, I did that to isolate the sitch, and BINGO it ran great. Drove it 70 miles to car a show and back, with no issues. So I KNOW it's the carb.
Question is.. What do I do next. I don't have the knowledge for complete tear down rebuild. I would rather not send it out for a rebuild and have a 100K car sitting dead for who knows HOW LONG.. Hoping someone here can point me in the right direction. HELP!!! Danny
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