slight issue after head gasket replacement 05 lly

Fastorange

New member
Jan 31, 2009
256
0
0
ohio
last winter i replaced the head gaskets on my 05 lly... i also removed alot of modded part and installed stock stuff back on it.... heads were taken to a machine shop where the valves were regound new valve stem seals and they were cleaned up a bit... new grade c gaskets were installed and new head bolts.. when i go to start the truck up after its sat for a wile it will shot a puff of smoke out... or if it sits and idels for a little bit like if you sat in the parking lot wile someone ran in to the store for a few mins... it will smoke again for a few seconds... then it clears up and goes away....

ive been watching my coolent it hasnt moved.. oil seems fine... i thought maybe it was the turbo so i installed a lower milage lmm turbo... i also installed an lml manifold... everything looked good in the exhaust ports... checke the balance rates they seem to be in spec...

anyone have any ideas as to what i should try next? i did put a diffrent cp3 pump on it... i also have a short video of a start up but i dont know how to post it up here..
 

Fastorange

New member
Jan 31, 2009
256
0
0
ohio
the cp3 i used was off of a lb7.. i used my lly reg on it... im starting to think that it just could be a cp3 issue..
 

Fastorange

New member
Jan 31, 2009
256
0
0
ohio
update, took the truck to a good friend of mine who has worked on semis for years... he claims that the smoke is to clear to be oil and that i have an injector with a bad spray pattern... i did use the efi live scan tool and shut each injector off to see if maybe i had one stuck open.. they all made the truck run rough when shut off...
 

dirty_max

Member
Jan 27, 2013
815
2
18
eureka il
sounds like they are all working. i know it would be a pain but i would still pull the valve covers and check the seals.
 

Fastorange

New member
Jan 31, 2009
256
0
0
ohio
thats what im ganna do... im going to pull the passenger side manifold first... and see what it looks like in the head... then ill go from there
 

Fastorange

New member
Jan 31, 2009
256
0
0
ohio
pulled the manifold on the pass side and turned the truck over a few times... you can see oil all over the valve stems.. i say seals it is