Re: 1985 Dodge B250 Power Problem

I realize this is late, but for the benefit of other owners who may be having power problems with 1980's-era carbureted 318's. The 2-BBL 318 from the mid-eighties was sadly undercarbureted and choked with poorly
engineered smog equipment. This was remedied once they were equipped with better engine managment and FI.
Unlike typical Chevy and Ford products, these old Chryslers cannot have their ignition timing set at 0 degrees. You have to set the ignition timing (with the vcacuum advance disconnected and plugged) at 8 degrees BTDC. Many mechanics who are unfamiliar with Mopars, incorrectly retard 318's and 360's too much when trying to tune them. They will idle and start great at 0 degrees in the shop, but during the road test, it will be a real challenge trying to get the beast up to the speed limit in less than 1/2 a mile.
Advance the timing to 8 degrees and it should be fine. Also make sure the carb feedback loop and O2 sensors are working and switching OK. Under the base of the carb, sometimes the EGR jet will plug with carbon too - this will cause poor running and bad emissions.
Sadly for us California residents, we're stuck with the 2-BBL and stock engine, but for those wanting to help their poor 318 along, a good MP 340 cam, Edelbrock SP2P and Carter 600CFM 4-BBL will make it respond like a whole new machine.
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