just curious what u guys think....

[~SwampRAT~]

i had to replace the alternator on my truck today and when i started it i noticed that its blowing a lot of smoke from the left bank. its blueish smoke so that tells me its oil. just curious, since im not a huge motor guy, what are some things that could cause this? i have a few ideas floating around in my head, just wanna hear some input.

[Squirell]

could be a plugged oil return in the head and it is makin your valve seals leak

[Hammerlane]

its obviosly oil in the cylinder, how is the question..

compression check will narrow it down, do a dry test first, record your readings for each cyl.
then do a wet test.. squirt a little oil in each cyl and re-record your readings, if compression improves you have rings/piston issue.  if it does not it would be gasket/head/valve issue.    good place to start.

[Econo-box from Hell]

96.444172 % chance you need valve guide seals.

[Ranger Dave]

96.444172 % chance you need valve guide seals.

X 99.9 %

[2000silverado]

96.444172 % chance you need valve guide seals.

don't buy the cheap umbrellas either. they are not worth a . get viton or teflan seals. they are a little more expensive, but they work alot better

[KORNBREAD]

well man id stick with the stock umbrella type with the way you have the motor. but thats up to you.  but like i said on the phone i really would bet seal or slow valve malfunction consediring its smoking from only the driverside exhust pipe and not both.  and that nice oil smoke you said you see is a good start. if i was you i would pull the head,check the valve,valve spring,valve seal,and then flip that bytch over and check the valve seat while you have the head off. better be safe than sorry.