Hello. I have '85 2wd long bed base pickup which my dad bought new in '85. I drove it for many years, and then it was in storage for 8 years, and I just got it out again recently. I have put in a new fuel tank, new fuel lines and pump, and rebuilt the carburetor. I am very experienced with auto repairs, but have very little experience with carburetors, and have barely touched one in 15 years.

After putting everything back together, the truck fired up relatively easily, but the first time I had the linkage and choke back together wrong. That is now fixed, and when cold it starts up okay, but I'm having problems getting it to run right warm, no matter how I adjust the various screws, both according to the factory service manual procedure and otherwise.

I'm pretty sure I need to take the carb apart again, and there is probably something plugged. It appears to dump fuel into the engine at idle. Attached is a video. I wanted to see if based on this anyone can give me an idea of where specifically to look for my issue. I appreciate any thoughts before I pull the carb apart and try again.

Tim

 

Is the bowl level set correctly between the 2 notches in the site glass? Lightly tap on it to see if the needle seat is sticking.

 

Seems like that was the symptom when the wrist pin holding the float fell out of its bracket on my Aisin. I went to the weber and haven't looked back.

 

Thank you both for the thoughts. To close the loop, I have it running very well now. There appear to have been a couple of issues. One, my new fuel pump was bad, and wasn't keeping up with demand. Two, the vacuum advance unit on the distributor had failed, and timing was causing me a problem. With both of these issues addressed, I was able to get the carb tuned in very nicely with the idle speed and idle mixture screws.

Tim