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Hello All! I have a 1995 F250 4x4 7.3 with a shade over 350k miles. I bought the truck not running and I've nursed it back to a running state. It runs pretty good, but smokes blue. I think it's worse when it's idling, but smokes pretty consistently.
I haven't done a compression test, but I feel there's a good chance that it's either bad rings or valves. I got a deal on a used 7.3 of the same year that only needs to have new injector cups.
Are there any tips or suggestions for removal and replacement of my existing engine?
Well, I recently pulled all 8 injectors and replaced all of the O rings. I was hoping it was something relatively easy to fix, but it doesn't sound like I got lucky.
I'd test it first. I'm always surprised on how many 3-400k motors still test near 400 psi (corrected per altitude).
could be as simple as an exhsust side seal on the turbine side of the turbo. I will say in my experience even when I have seen trucks consume up to 1.5qt every ten miles mixed in the fuel via split rings, it was not blue.
pulling to motor truly is not all that hard. Once the radiator and core support are out, it's a matter of disconnecting the main harness and transmission/fuel lines and that is about it! Pulling a Subaru motor is more time intensive.
Am I looking at a ton of work to pull the old engine?
I can do it in 8 hours on my truck which is a 5 speed, with a standard trans the trans has to be removed first.
with auto just unbolt the torque converter and trans bolts, disconnect wiring harness drain cooling system, remove fan, radiator, ac compressor, ps pump and alternator. disconnect down pipe, dis connect fuel lines, move harness at firewall up and remove plastic loom holders. remove nuts from motor mount studs. support trans lift motor over mount studs, move forward than rotate 45 degrees and lift out
Well, here's more information. Today I did the blow-by test with the oil cap and It didn't blow the cap off. The vibration from the engine caused it to slide, but it was nowhere near being blown off.
Also, I drove it today. It drives pretty good, but when I get on it kinda hard there's an audible knock from what sounds like the passenger's side.
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