Actually, I drive fairly conservitively. Albeit mainly city driving. Hubs are unlocked. The choke appears to be open all the way once it reaches normal temp. to allow more air in. Yes, a new motor would be ideal, but I am on a slim budget. I do have an oil leak from either my inner or outer seal of the rear axle on the passenger side. This could be causing the drum brake to lock up or drag some??? Perhaps this is the problem. Have not had time to drop the axle and investigate. Is their a dye that can be added to the fuel to search out fuel leaks? Also, my evaporative fuel canister is dead. I have not been able to locate a good used one, but it has never been a problem till now. This truck is an original CA model with all the smog equipment still intact. Any more ideas on what the problem and or answer could be to my poor fuel economy?