Long time lurker - first time poster,
Have a 2001 7.3L 4X4
with approximately 140K. I bought it two years ago with 134K. As far as can tell, it is all stock. Over the last 12 months (only about 3,000 miles though), I have noticed a mpg
drop (15 down to 9-10) and what I would describe as a power-loss over the last year. The truck is used primarily to haul a 12,000 lb
5th wheel camper. I change oil, filter and fuel filter once a year.
Last fall I put new IC
boots (dieselsite.com) on because I noticed oil seeping out of mine. The old ones were very worn, thin and one had a tear. After this, I noticed a little more power and was able to hear a "turbo whistle" sound. It was much louder than before. MPG
hasn't really picked up and it still doesn't seem to have the power it originally had. A friend borrowed my truck and said that he noticed exhaust noise. I'm not 100% I can hear that as I mostly just hear engine noise. From reading here, it appears at least new doughnuts or bellowed uppipes would help this?
Also, at the same time, I've also noticed an uptick in oil consumption. I am using a quart of oil every 600-800 miles. There is no smoke, other than a quick white puff during a cold start (first one of the day usually). There are no leaks. When I changed my fuel filter last month, it was dark black. It seemed more gritty / sandy than oily. I read on one of the forums that this could be a sign of an injector o-ring deteriorating thus allowing me to burn my oil as fuel. Not sure if that is correct or not?
I've had brakes checked for a hanging caliper and they tested ok.
All that being said, I'd like to find someone who can help me with these problems as I am not mechanically inclined. I'm not sure if I am dealing with one or two problems or if I have even diagnosed them properly. I live in Southern Indiana (Jeffersonville) but can easily get over to Louisville for a good mechanic.
Thanks for your help,