I have a 1991 mazdaMPV V6. The engine had a total rebuild in 2002. The car accelerates very slowly, has a hard time going up hills, and gets 8 MPG. Can someone maybe give me some items to check and/or replace. Thanks in advance.

 

i did own a 94 years ago and it have the same problems no power and bad in gass it was that the timing belt jump 2 teeths and there was a problem in one head i believe your timing belt jump