how long did you run it with gas? It could have melted your pistons....
Where are you located? There might be an org member near you who would help you.Yeah, I know. I wish I knew somebody with a scan tool. And yeah, all new OEM injectors.
I'll check the blow by, but how much is a lot? If you unscrew it completely and the cap stay in the hole, is that good, or how do you judge?Pop your oil fill cap while its running. Does it have a lot of blow by? If so you have a washed/dusted cylinder which would explain your knock.
Turn the cap upside down, put it on top the hole and if it blows off theres a good chance that your motors dusted.I'll check the blow by, but how much is a lot? If you unscrew it completely and the cap stay in the hole, is that good, or how do you judge?
Off the top of my head I think cranking compression is supposed to be around 400 psi, cant remember for sure.Okay, thanks. I'll try that. Do you happen to know what good compression test numbers are on these motors?
I agree with ^^^. Also to the OP was the mechanic who fixed it a reputable diesel mechanic?
Yes, the shop I had the work done at is the largest independent diesel shop in northern Colorado... however, I don't know how much that means because I was not satisfied with their service.I agree with ^^^. Also to the OP was the mechanic who fixed it a reputable diesel mechanic?
No problem. If you do have a fuel leak that lets air get in the fuel system it could cause a lot of running issues. I would start by changing the fuel filter, it probably needs to be changed anyway after gas was ran through it. I would fill the bowl with fuel after I took the old filter out. If it still leaks you can get a mirror, start the truck, and use the mirror to find your leak. Depending on where the leak is it might just be causing the truck to lose fuel pressure and actually not be letting air in.Yes, the shop I had the work done at is the largest independent diesel shop in northern Colorado... however, I don't know how much that means because I was not satisfied with their service.
I did some looking around by the fuel bowl and I definitely have a fuel leak. I touched the back of the fuel bowl, my hand got wet and smelled like diesel. I believe it is coming from the fuel filter cap because the fuel bowl is slightly dusty on the outside, except for the entire back side, from immediately below the cap all the way down. It's clean like the fuel has been leaking from under the cap and cleaned the dust off. While the truck was running, I looked at the back of the fuel bowl and couldn't visibly see it leaking, so it must be a pretty slow leak. Every time I park somewhere, there is at least a 5" diameter spot that looks like oil below my truck. After finding this leak, I now realize that it is actually fuel that runs down the valley and picks up some old oil along the way, making it dark like oil. After consistently parking on my driveway, there is a huge spot on the concrete (about 3' x 3'), and it is much lighter in color towards the outside, like it's fuel, not oil. I don't know why I didn't think of it before.
Is it possible that such a slow leak from the fuel bowl could be creating spots like that everywhere I go, or is it more probable that I also have another fuel leak from somewhere else, also?
Also, could a leak from the fuel bowl be causing all of my issues: rough idle/knock, terrible fuel mileage, and white smoke on cold start?
Btw, thanks a lot for helping me through this!!!