Engine rebuild time????

[strokedually]

Ive been trying to post some compression results on my off my 99 dually and get input. Iwanna see if its a good idea to rebuild or leter buck?
Cold using a digital compression tester in psi i got
1-310.5 5-335.0
2-323.0 6-300.0
3-316.5 7-318.0
4-281.0 8-318.0
Pluged in the block heater over night (14hrs) and got.
1-320.0 5-354.5
2-336.5 6-324.0
3-338.0 7-333.0
4-307.5 8-342.0
Its got 215k and smokes really bad white in the morning just changed the glow plugs and realay for GP and AIH please give me input. It doesnt use oil ,or antifreeze starts up really good inthe morning its got good power to me anyway it just smokes like a like hell

[jethro]

mine smokes real bad in the am also i was thinking injectors maybe but idk for sure

[strokedually]

i was thinking injectors 2 and its probly part of it is but i got compression results that seem low 2 me

[JDoldnumber07]

My 96 would smoke real bad in the mornings too filling the neighborhood with unburnt fuel, but once it warmed up wouldn't smoke at all. I'm not sure what the specs are for compression but they all look good with the exception of CYL #4. Typically with no oil or coolant loss and white smoke you are looking at something fuel related. If blue thats where the compression can be an indicator of potential rebuild time as its comsuming oil.(with further isolation as to block or cylinder heads at that point)In my case with the massive amounts of white smoke i found that i had 2 injectors stuck open dumping too much fuel into the cylinders. After replacing all the injectors as well as GP and GPR(200K on the engine) and checking the rest of the fuel system my problem went away.

[strokedually]

sounds great ill look in to that