out of the pot into the fire

[dsltrc]

Well my luck just sucks lately...after fixing the last noise (flex plate bolts) i now seem to have a new noise... I was tring to merge onto the highway and this preson wouldn't let me over so i decided to gas it and get out in front... well i didn't realize it but i must have bent a push rod... the truck runs fine but has a tapping sound coming from the front driverside of the engine... Well i guess i'll be replacing that push rod this weekend... It should be pretty straight forward right... looks like i need to remove the A/C compressor bracket and i should be able to get te cover off... then just unbolt the rocker arm and remove replace the offending rod...

 

[foreverfalcon40]

replace them all, inexspensive. Don't forget to TQ to spec!

 

[dsltrc]

i know i should but i'm tired of working on this thing... I'm thinking of just replacing the bad part for now...

 

[99 2dr]

Are you sure it's not an exhaust leak? I would think that it would take a pretty good bind to bend a push rod.

 

[SunlitComet]

There is no torque on valve push rods just adjust as directed below:

VALVE LASH ADJUSTMENT

1. Turn the valve rocker arm nuts clockwise until all of the valve lash is removed.
2. Turn the crankshaft clockwise until the alignment mark on the crankshaft balancer is aligned with the notch in the engine front cover tab.
3. Look at the number 1 cylinder valves as the crankshaft balancer alignment mark approaches the notch in the engine front cover tab. If a valve moves as the alignment mark moves into position, the engine is in the number 6 firing position. If this happens, turn the crankshaft clockwise one revolution in order to reach the number 1 cylinder firing position.

1. With the engine in the number 1 firing position, adjust the exhaust valves for cylinders number 1, 3, 4, and 8 and the intake valves for cylinders number 1, 2, 5, and 7.

4.1. Turn the valve rocker arm nut counter clockwise until the valve lash is felt in the valve pushrod. 4.2. Turn the valve rocker arm nut clockwise until all the valve lash is removed (zero valve lash). Zero valve lash can be felt by moving the valve pushrod up and down between your thumb and forefinger until there is no more up and down movement of the valve push rod.


4.3. When all the valve lash is removed, then turn the valve rocker arm nut clockwise 1 additional turn (360 degrees).

1. Turn the crankshaft clockwise 1 revolution until the alignment mark on the crankshaft balancer is aligned with the notch in the engine front cover tab.

1. With the engine in the number 6 firing position, adjust the exhaust valves for cylinders number 2, 5, 6, and 7 and the intake valves for cylinders number 3, 4, 6, and 8.

6.1. Turn the valve rocker arm nut counter clockwise until the valve lash is felt in the valve pushrod. 6.2. Turn the valve rocker arm nut clockwise until all the valve lash is removed (zero valve lash). Zero valve lash can be felt by moving the valve pushrod up and down between your thumb and forefinger until there is no more up and down movement of the valve push rod.


6.3. When all the valve lash is removed, then turn the valve rocker arm nut clockwise 1 additional turn (360 degrees).

---------- Post added at 08:24 AM ---------- Previous post was at 08:23 AM ----------

Service and Repair REMOVAL PROCEDURE

1. Disconnect the spark plug wires from the spark plugs. Refer to Spark Plug Wire Harness Replacement in Powertrain Management.
2. Disconnect the wiring harness from the clips, and move the harness aside.
3. Remove the air cleaner intake duct for access to the right valve rocker arm cover. Refer to Air Cleaner Assembly Replacement in Powertrain Managements.
4. Remove the bolts and oil level indicator tube bracket. Refer to Oil Level Indicator and Tube Replacement
5. Remove the AIR check valve (crossover), if so equipped. Refer to Sec Air Injection Check Valve/Pipe Replacement in Powertrain Managements.

1. Remove the PCV tube.

1. Remove the following components for access to the left valve rocker arm cover:

• • The Air Conditioning (A/C) compressor, if equipped, and lay the A/C compressor aside. Refer to Compressor Replacement.
  • The EGR valve inlet pipe. Refer to EGR Valve Replacement in Powertrain Managements.
  • The PCV and the hose.
  • The vacuum brake booster pipe, if equipped, and move it aside
  • Remove the valve rocker arm cover and the gasket. Refer to Valve Rocker Arm Cover Removal (Right) and Valve Rocker Arm Cover Installation (Left).
  • Clean all traces of old gasket from the valve rocker arm cover and the cylinder head. Refer to Valve Rocker Arm Cover Clean and Inspect

INSTALLATION PROCEDURE

1. Install the valve rocker arm cover. Refer to Valve Rocker Arm Cover Installation (Left) or Valve Rocker Arm Cover Removal (Right).
2. Install the components as follows for the left valve rocker arm cover:

• • The air conditioning compressor. Refer to Compressor Replacement.
  • The EGR valve pipe. Refer to EGR Valve Replacement in Powertrain Managements.
  • The PCV and the hose
  • The vacuum brake booster pipe
  • The AIR check valve (crossover) pipe, if equipped. Refer to Sec Air Injection Check Valve/Pipe Replacement in Powertrain Managements.

1. Install the components as follows for the right valve rocker arm cover:

• • The air cleaner intake duct.
  • The crankcase ventilation hose.
  • The oil level indicator tube. Refer to Oil Level Indicator and Tube Replacement.

1. Install the wiring harnesses to the valve rocker arm cover clips.
2. Install the spark plug wires. Refer to Spark Plug Wire Harness Replacement in Powertrain Management.

 

[retorq]

I wouldn't do it that way ... way too confusing.

Small Block Chevy Valve Adjustment Order 0 deg TDC, both number one valves shut.
Adjust the #1 exhaust valve
Adjust the #1 intake valve
Adjust the #3 exhaust valve
Adjust the #5 intake valve
Adjust the #7 intake valve
Adjust the #2 intake valve
Adjust the #4 exhaust valve
Adjust the #8 exhaust valve
Now rotate the engine 360 degrees. The mark on the balancer should be back at the TDC mark. Keep in mind that this is not the TDC where #1 would be firing! It's where #6 would fire.
Adjust the #3 intake valve
Adjust the #5 exhaust valve
Adjust the #7 exhaust valve
Adjust the #2 exhaust valve
Adjust the #4 intake valve
Adjust the #6 exhaust valve
Adjust the #6 intake valve
Adjust the #8 intake valve

 

[lummy]

for the AC bracket, you don't have to remove it. Take out the 3 bolts in front, the 1 nut and the 1 bolt on the bottom by the PS pump. The whole bracket will slide forward enough to remove the cover

 

[ezdaar]

I wouldn't do it that way ... way too confusing.

Small Block Chevy Valve Adjustment Order 0 deg TDC, both number one valves shut.
Adjust the #1 exhaust valve
Adjust the #1 intake valve
Adjust the #3 exhaust valve
Adjust the #5 intake valve
Adjust the #7 intake valve
Adjust the #2 intake valve
Adjust the #4 exhaust valve
Adjust the #8 exhaust valve
Now rotate the engine 360 degrees. The mark on the balancer should be back at the TDC mark. Keep in mind that this is not the TDC where #1 would be firing! It's where #6 would fire.
Adjust the #3 intake valve
Adjust the #5 exhaust valve
Adjust the #7 exhaust valve
Adjust the #2 exhaust valve
Adjust the #4 intake valve
Adjust the #6 exhaust valve
Adjust the #6 intake valve
Adjust the #8 intake valve

Someone knows whats up....

 

[gpracer1]

Ha !! In the old days we would do it with the engine running.

 

[dsltrc]

Well after dropping the tranny/ transfer case a few weekends ago I'm gonna let someone else do it... And I'm going to sell her and buy a newer suburban... I'm looking at a 2005 Yukon XL 2500, 4wd, 6.0L and with quad captain chairs... Only 65,000 miles for $16,000