OK, 1st off, if there is already a thread with the answers to my questions can someone PLEASE point me to them? And if so, Sorry for the redundant post.
Ok, here is my situation. We bought the truck, a 1989 Dodge Ram 50, with a 2.0, G63B from a local dealer; very clean, 1 owner, for my 15-year-old son, he is helping me work on it and it has been 20+ years since I have had to deal with ANY carburetors and NEVER with a Mikuni, AND as of right now… I don’t plan on having to change out to a Weber, maybe in the future, but not now, but I digress. It was idling a little rough so I checked the timing, it was out a little so we trued it up. The truck was also initially running EXTREMELY rich, we did our diligent research and found this document on the bowl vent valve diaphragm. Sure enough it was torn. After much cussing, fussing, praying and searching I was able to find one from Carbs Unlimited, we also purchased a Walker rebuild kit with all the O-rings and other diaphragms from our local O’Reilly’s. With my supervision and help, he went through and replace all the diaphragms, gaskets, and O-rings, and we made sure that all the passages were clean and clear. We have replaced all 25+ feet of vacuum lines, including the ones inside the vacuum control box on the fender. I have tested and verified that all solenoids, with the exception of the AC throttle control solenoid are working, he’ll just have to do with A/C for the time being. I know I’m being mean… We have adjusted the curb Idle speed down to the specified 850±50 RPMS and now I get to the heart of the issue. In 1st his acceleration and power are fine. When he shifts into 2nd, it all goes to !@#$. The truck will barely get above 2000 RPMs and it seems as if it is struggling to do that. It seems to me that it is almost flooding out the carb OR it’s way too lean. No emissions test here in GA thank God, but in my due diligence and OCD nature we did check and make sure that the idle emissions are with in specs. Also after a little while it seems to be searching, not holding a steady RPM, it is within 100 of the setpoint but it will never level off. I have also verified that the fuel filter is not clogged and we are not running ANY ethanol fuel through it. Any ideas on my next step???
Thanks
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