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J
New 350TBI = Terrible Mileage

Sorry for the late reply. But i have checked all of these now. Fuel pressure is 11.5psi, spray pattern looks good to me but I am sending them to witchhunter performace to get cleaned and flow matched, timing was set at 0* with the plug disconnected, and I ohm'd the temp sensor cold and warm and...
- jwc1080
- Post #6
- Jan 20, 2017
- Forum: Engine Performance + Maintenance
J
New 350TBI = Terrible Mileage

No ideas, suggestions, thoughts, opinions....
- jwc1080
- Post #3
- Nov 11, 2016
- Forum: Engine Performance + Maintenance
J
New 350TBI = Terrible Mileage

No codes, haven't checked the fuel pressure. Cat is gutted. Like I stated, runs great, good power, idles super smooth. I know some trucks will have slight variation but not that much. Something has to be wrong. I planned on keeping the truck for the long run but i cannot drive it much longer...
- jwc1080
- Post #2
- Nov 6, 2016
- Forum: Engine Performance + Maintenance
J
New 350TBI = Terrible Mileage

Try to make this short. Bought a 94 K1500 with 190k on original motor in good running order. Did a complete tune up, fuel filter, NGK plugs, wires, cap, rotor, blaster coil, regapped plugs, synthetic fluids, ect. Ran like a top and increased my mileage to an average of 16mpg which I was very...
- jwc1080
- Thread
- Nov 6, 2016
- Replies: 5
- Forum: Engine Performance + Maintenance