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Blow by questions.... Am I being paranoid?
Today, I towed my 26 ft. cabin cruiser boat for a little over 2 hours. When I got home and backed it in the driveway, I noticed that when I had to juice it a bit to go up the driveway, I could see a bit of grey smoke coming from the exhaust. My boat is a pretty heavy rig at approximately 10K lbs. So, being the paranoid person that I am, I let it idle for a few minutes, took it for a ride without the boat, idled it some more, and then shut it off. A while later, I went out and started it up and took off the oil cap. To my surprise, I did see a small stream of smoke. It wasn't heavy, but it was definitely there. My truck just hit 130K on the clock.
It seems to run really good, decent power and getting around 15.5 with no load. I put my gauges in a couple of days ago and noticed that it would only hit 15psi of boost. This morning it was hitting about 17psi. Then after towing for 2 hours, it was only hitting 14-15psi. I haven't run since coming back. Any ideas why I get the fluctuations?
Another question is that whenever it's idling I can hear more diesel knock on the drivers side. To my ears, I can hear it pretty good on the outside of the truck on the drivers side. It reminds me of a rod knock but it's not and I can only hear it at idle. Is there a pump or something on the driver's side that I'm hearing or is this normal? I once had a 5.0 mustang that had injectors that ticked pretty loudly and made me think it was a lifter tick.
Anyway, is this pretty normal stuff for an older 7.3, or do I have one that needs a rebuild. I saw somebody mention re-doing injectors... what's that about and how expensive is that to have done? Could that be one of my issues?