I have a low mileage 1985 Plymouth Voyager 2.6L (Mitsubishi) with the rare Magic Camper option. It has A/C and all power accessories and has barely 78,000 miles on it but after being in storage for a couple years while I moved and got settled it, when I brought it back home it now has a hesitation that is so bad that it will hardly start moving from a standstill unless I pulse the pedal to keep it from stalling but once moving, it's fine. It's only slightly better once it warms up.
It also no longer has much power for hills even though it otherwise seems fine in traffic and on surface streets. All the vacuum lines were replaced, the fuel pump is new and pumping a steady 6 psi, the carburetor was professionally rebuilt and tested for proper flow on a testing machine before installation so I am at a loss to know where to look next. Someone once suggested the vapor separator which is inline between the pump and the carburetor but it appears to be a part that is no longer made unless someone here has a source or at least can tell me how to test it for proper functionality. It does have a new dual EGR valve (probably the last new one in existence and cost a fortune!) and easily passes California's rigid smog testing. Any ideas?
Don