Two and a half years ago, I left Michigan (again) and moved back to southern Nevada (again) so I could be here for my youngest of 5 daughters (yes! GOD hates me!) My wife and I, in order to get here, had to either sell or give away most of our belongings. Including our beloved, 1988 Lincoln Town Car. Less than two months after arriving, a very good friend "gives" me his 1991 Mazda b2600i to avoid paying for registration and insurance on an extra, un-necessary vehicle. For 2 years, that truck was the epitome of WORK HORSE! Then, 4 and half months ago, the B.S. started. Suddenly, without warning, the truck wouldn't fire up despite having started, prefectly, 4 times that day! Immediately, it was determined that it wasn't getting spark. 2 months, several parts and lots of cash later, I removed the ECU and found a dime sized burn mark on the circuit board. I replace the ECU and, FINALLY, the truck is getting spark BUT WON'T START! $1600 and four mechanics later, the truck starts but, runs extremely rich AND only after sitting for the better part of a day. When the engine is warm, the truck starts but dies immediately! CAN SOMEBODY HELP ME PLEASE??!!! I'm at my wits end! Today, I'm replacing the Oxygen Sensor. If that doesn't work, I'm replacing the fuel pump. If that doesn't solve the problem, I'm taking a sledgehammer to it!

 

I think there is only one guy on the net who can help you. His name is Greasemark and he is on the Ford Forum - Enthusiast Forums for Ford Owners.
Post your question on the "Ranger" Forum and check willygog's thread.

 

Rangers and Mazda trucks only became cousins/twins starting in 1994. His is a made-in-Japan truck.

Post on MazdaTrucking.com. Some guys there are good with B2600i engines, and of of those lives in LAs Vegas.