fuel milage

[jstride]

had replaced fuel spider assm. and injecters now my milage has dropped from 16 mpgs to 13.5 mpgs. 1999 sub 5.7 4/4 160000 miles auto. any ideas?

[j cAT]

Originally Posted by jstride

had replaced fuel spider assm. and injecters now my milage has dropped from 16 mpgs to 13.5 mpgs. 1999 sub 5.7 4/4 160000 miles auto. any ideas?

could be wrong injectors or they are defective leaking. do a full pressure test to check this out.


16mpg on this vehicle is a little high. how about 14MPG is what I would expect..