Blue smoke

[99seventree]

Well everytime i start my truck when its cold it will just dump blue smoke everywere. Like it is running on straight oil. but once it gets hot i only get blue smoke at like 2600 for a second. the oil level hasnt dropped significantly in the 400 miles that ive had the truck. any thoughts?

[dray8165]

Blue smoke does generally mean oil. I think the easiest test would be to pull your fuel filter and look for traces of oil. That could mean your lower injector o-rings are leaking. Valve guide seals leaking could cause oil burning, but more in gasser motors (because of the vacuum) and usually only at startup.