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Thanks, I am going to check the exhaust and try to tune the carb right now.

I have not checked the exhaust yet but I will do that today. I know the catalytic converter is loose... Thanks for the tip on the carb though.

My 1979 J10 with almost 90k miles will start up and run fine, it will climb hills and accelerate for 5 minutes. After that it starts to bog down and I have to let off the gas in order to not kill it going up hills and trying to go faster than about 40 mph. I have 4-5 psi of fuel pressure and I...