Long story, but here goes. I bought this truck about 3 months ago. It is an 89 f250 with a 7.3 idi. the 7.3 is from another truck as it is dated for 1991. I have no idea how many miles, but the engine starts right upon the first turn and has been very dependable. The problem is that on startup, one cylinder has always taken about 20 seconds of idling before it would start to fire. It will start earlier if I rev. This would less of an issue if it didn't burn oil really bad, about 5 quarts for 300 miles. Looking at the blowby, i noticed that there was a VERY noticeable puff every revolution, so I figured it was that same cylinder. Also, before that cylinder starts to fire, the engine is nice and quiet, no clicks or anything, just a little shake for the dead cylinder, however once that cylinder starts to fire, a loud clack clack clack can be heard. I thought it may have been a stuck open/closed/screwed up injector, so I changed them all out with no help. I then diverted the CCV (Crank Case Vent) to a long hose, copper pipe and then strainer filled with copper scrubbing pads. the hose then went down and dumped below the cab. I successfully collected alot of oil, but it still leaves a nice coat of oil on the back of my cab due to the large amount of smoke still coming out. I am certain that this is where all of my oil is going, due to blowby, not valve guides.
I decided today to get my brother to listen for the clack as I bled each cylinder seperately and we found the issue cylinder, it is the drivers side closest to the windshield. I took out the injector, diverted the open fuel lines and started it up to see if it was also causing the blowby. Sure enough, drastically less blowby and no puffing like before. I am now letting the cylinder soak in a mixture of diesel and carb cleaner, hoping I have a stuck cylinder ring.
OK, so......... think this will work??? the cylinder would come and go as I was driving, sometimes no smoke from exhaust, usually very little, but sometimes when I am at highway speeds, white smoke will come out during decelleration. But if I got on the throttle a while, it would go away completely!!!! are my cylinder rings sticking and then coming unstuck?? the soak I put in is not running out, it is staying, so it's not a hole in the piston, maybe a crack?? cracked cylinder rings??
Any feedback or good ideas would be VERY much appreciated!!
I decided today to get my brother to listen for the clack as I bled each cylinder seperately and we found the issue cylinder, it is the drivers side closest to the windshield. I took out the injector, diverted the open fuel lines and started it up to see if it was also causing the blowby. Sure enough, drastically less blowby and no puffing like before. I am now letting the cylinder soak in a mixture of diesel and carb cleaner, hoping I have a stuck cylinder ring.
OK, so......... think this will work??? the cylinder would come and go as I was driving, sometimes no smoke from exhaust, usually very little, but sometimes when I am at highway speeds, white smoke will come out during decelleration. But if I got on the throttle a while, it would go away completely!!!! are my cylinder rings sticking and then coming unstuck?? the soak I put in is not running out, it is staying, so it's not a hole in the piston, maybe a crack?? cracked cylinder rings??
Any feedback or good ideas would be VERY much appreciated!!