02silverado60

I would think the lean code would be caused by the shorter push rods too, as in the valves not fully opening, but it could be something else...

AUTOT3K

iTrader: (3)

So I'm getting it apart.
On base circle from zero lash...its 1/4 turn till 22ft lbs.
So not much at all

How do I test the lifter?
See if it squishes?

oakley6575

iTrader: (5)

1/4 turn? Shouldn't it be more like 1-1/4 turns?

AUTOT3K

iTrader: (3)

So that 0.25" made a difference there for sure.
I pushed on all the lifters. Couldn't squish any

AUTOT3K

iTrader: (3)

https://www.youtube.com/watch?v=dndE...e_gdata_player

Here's an idle warm in the shop. The valve train does sound good at idle. I'm nervous to open it up though

AUTOT3K

iTrader: (3)

https://www.youtube.com/watch?v=TbIB...e_gdata_player

So the damn noise came back...
Check engine too. I'm getting
P0171 lean bank 1
And
P0521 engine oil pressure sensor performance
The second one is new

AUTOT3K

iTrader: (3)

Freeze frame the 0171 came on at 784rpm and at engine load 35 percent
The 0521 came on at 1682rpm and at engine load 40 percent

AUTOT3K

iTrader: (3)

Sitting here idling checking it with the solud scanner. The noise has conpletely gone away. But returns if I put it in 1st and get going to about 3500rpm
So at cruise my noise is fine. Its like it cmes on after I get on it hard

2000chevysilverado

iTrader: (11)

Can ya post a vid at idle and at 35k engine bay

AUTOT3K

iTrader: (3)

Here
https://www.youtube.com/watch?v=pVWRqS5f_2U&feature=youtube_gdata_player