BIGHEAD

I have been getting terrible fuel mileage. I can't put a number on it, but it is bad. I probably don't get 5 mpg pulling my boat. I put on a new turbo today. Should this help, as my other one had 247000 miles on it. I also am having issues with my COMP. When towing in level 2 or 3, or any of them for that matter, when the truck is in a strain, it jumps & skips. I can immediately shut the box off & all that quits. Does anyone have any ideas? My boat is a big saltwater boat that weighs about 10K & has a lot of drag to it. I am running 305 tires, but I was getting good mileage for a long time, but now it is terrible. Any ideas will be appreciated.

CoastalDav

I'm not much with bombs, but I would disconnect what ever you have and get it back to stock.
Check the Map Sensor, IAP Sensor and off corse the Engine Computer. Running that bad you must be showing some codes. Have it scanned or do the key on and off three times.

Check LP pressure.

I wish I still had my 12V.


Dave

MARKY MARK

Definitely check fuel pressure. I was getting terrible fuel milage when I bought my truck used. I found this website and heard about the lift pump problems. I installed guages and my fuel pressure was 5 lbs. at idle and could pull it down to 0 lbs. I put a new lift pump on and my milage went up 3 miles per gallon.

Mark