Lose Lifter??
BF Veteran
Joined: Jun 2006
Posts: 3,429
From: Vancouver. B.C. Canada
RE: Lose Lifter??
What kinda milage is on the engine? I see in your sig you have an '87 350.
I ask because I wonder if it's a worn cam lobe.
As far a adjusting the lifter goes, remove the rocker cover, bring the piston up to TDC on the loose rocker, adjust the rocker arm to zero lash, then tighten the adjuster nut another 3/4 turn.
That's the short reply.
If you want to get into diagnosis and repair, I can walk you through it step by step, in more detail.
I think the Haynes repair manual has a fairly good section for checking cam wear and valve adjustment
I ask because I wonder if it's a worn cam lobe.
As far a adjusting the lifter goes, remove the rocker cover, bring the piston up to TDC on the loose rocker, adjust the rocker arm to zero lash, then tighten the adjuster nut another 3/4 turn.
That's the short reply.
If you want to get into diagnosis and repair, I can walk you through it step by step, in more detail.
I think the Haynes repair manual has a fairly good section for checking cam wear and valve adjustment
Thread Starter
Joined: Oct 2006
Posts: 170
From:
RE: Lose Lifter??
The motor is a rebuilt liberty motor..the guy said it has around 130,000-133,000 miles..the guy i bought it from told me that he was told it was a lose lifter...Now how would I get the Pistion with the lose liter to TDC..will I need any special tools or is there any special procedure??
BF Veteran
Joined: Jun 2006
Posts: 3,429
From: Vancouver. B.C. Canada
RE: Lose Lifter??
Valve Lash Adjustment
Remove the valve rocker arm cover..
Crank the engine until the mark on the crankshaft balancer lines up with the timing mark on the front cover and the engine is in the number one firing position. This may be determined by placing fingers on the number one valve as the mark on the balancer comes near the timing mark on the front cover. If the valve rocker arms are not moving, the engine is in the number one firing position. If the valve rocker arms move as the mark comes up to the timing mark, the engine is in the number six firing position. Rotate the crankshaft 360° or one complete revolution in order to reach the number one position.
With the engine in the number one firing position as determined above, adjust the following valves (Even numbered cylinders are in the right bank. Odd numbered cylinders are in the left bank):
- Exhaust:1, 3, 4, 8
- Intake:1, 2, 5, 7
Back out the adjusting nut until lash is felt at the pushrod then turn in the adjusting nut until all lash is removed. This can be determined by rotating the pushrod while turning the adjusting nut. When the play has been removed, turn the adjusting nut 360° or one full additional turn in order to center the valve lifter plunger.
Crank the engine one revolution until the timing mark on the front cover and the crankshaft balancer mark are again in alignment. This is the number six firing position. The following valves may be adjusted:
- Exhaust: 2, 5, 6, 7
- Intake: 3, 4, 6, 8
Install the valve rocker arm cover.
[IMG]local://upfiles/2910/A6FF5211782D41DF859D748EE63F37F2.gif[/IMG]
Remove the valve rocker arm cover..
Crank the engine until the mark on the crankshaft balancer lines up with the timing mark on the front cover and the engine is in the number one firing position. This may be determined by placing fingers on the number one valve as the mark on the balancer comes near the timing mark on the front cover. If the valve rocker arms are not moving, the engine is in the number one firing position. If the valve rocker arms move as the mark comes up to the timing mark, the engine is in the number six firing position. Rotate the crankshaft 360° or one complete revolution in order to reach the number one position.
With the engine in the number one firing position as determined above, adjust the following valves (Even numbered cylinders are in the right bank. Odd numbered cylinders are in the left bank):
- Exhaust:1, 3, 4, 8
- Intake:1, 2, 5, 7
Back out the adjusting nut until lash is felt at the pushrod then turn in the adjusting nut until all lash is removed. This can be determined by rotating the pushrod while turning the adjusting nut. When the play has been removed, turn the adjusting nut 360° or one full additional turn in order to center the valve lifter plunger.
Crank the engine one revolution until the timing mark on the front cover and the crankshaft balancer mark are again in alignment. This is the number six firing position. The following valves may be adjusted:
- Exhaust: 2, 5, 6, 7
- Intake: 3, 4, 6, 8
Install the valve rocker arm cover.
[IMG]local://upfiles/2910/A6FF5211782D41DF859D748EE63F37F2.gif[/IMG]
Thread Starter
Joined: Oct 2006
Posts: 170
From:
RE: Lose Lifter??
ORIGINAL: Chevy Lover
Valve Lash Adjustment
Remove the valve rocker arm cover..
Crank the engine until the mark on the crankshaft balancer lines up with the timing mark on the front cover and the engine is in the number one firing position. This may be determined by placing fingers on the number one valve as the mark on the balancer comes near the timing mark on the front cover. If the valve rocker arms are not moving, the engine is in the number one firing position. If the valve rocker arms move as the mark comes up to the timing mark, the engine is in the number six firing position. Rotate the crankshaft 360° or one complete revolution in order to reach the number one position.
With the engine in the number one firing position as determined above, adjust the following valves (Even numbered cylinders are in the right bank. Odd numbered cylinders are in the left bank):
- Exhaust:1, 3, 4, 8
- Intake:1, 2, 5, 7
Back out the adjusting nut until lash is felt at the pushrod then turn in the adjusting nut until all lash is removed. This can be determined by rotating the pushrod while turning the adjusting nut. When the play has been removed, turn the adjusting nut 360° or one full additional turn in order to center the valve lifter plunger.
Crank the engine one revolution until the timing mark on the front cover and the crankshaft balancer mark are again in alignment. This is the number six firing position. The following valves may be adjusted:
- Exhaust: 2, 5, 6, 7
- Intake: 3, 4, 6, 8
Install the valve rocker arm cover.
[IMG]local://upfiles/2910/A6FF5211782D41DF859D748EE63F37F2.gif[/IMG]
Valve Lash Adjustment
Remove the valve rocker arm cover..
Crank the engine until the mark on the crankshaft balancer lines up with the timing mark on the front cover and the engine is in the number one firing position. This may be determined by placing fingers on the number one valve as the mark on the balancer comes near the timing mark on the front cover. If the valve rocker arms are not moving, the engine is in the number one firing position. If the valve rocker arms move as the mark comes up to the timing mark, the engine is in the number six firing position. Rotate the crankshaft 360° or one complete revolution in order to reach the number one position.
With the engine in the number one firing position as determined above, adjust the following valves (Even numbered cylinders are in the right bank. Odd numbered cylinders are in the left bank):
- Exhaust:1, 3, 4, 8
- Intake:1, 2, 5, 7
Back out the adjusting nut until lash is felt at the pushrod then turn in the adjusting nut until all lash is removed. This can be determined by rotating the pushrod while turning the adjusting nut. When the play has been removed, turn the adjusting nut 360° or one full additional turn in order to center the valve lifter plunger.
Crank the engine one revolution until the timing mark on the front cover and the crankshaft balancer mark are again in alignment. This is the number six firing position. The following valves may be adjusted:
- Exhaust: 2, 5, 6, 7
- Intake: 3, 4, 6, 8
Install the valve rocker arm cover.
[IMG]local://upfiles/2910/A6FF5211782D41DF859D748EE63F37F2.gif[/IMG]
BF Veteran
Joined: Jun 2006
Posts: 3,429
From: Vancouver. B.C. Canada
RE: Lose Lifter??
If you crank the motor over a couple of times it will not spew oil all over the place. If you continue to crank it, it will build up oil pessure and start to speay oil all over. It will not hurt the engine to turn it over with the valve covers off.
As slammins15 said you can adjust the rockers with the engine running and it will make a mess. I have done it that way but I do not recommend it unless you are experienced and quick.
The way I have explained it is the way I do it. It's an accurate and clean way to do it. I use a paint pen or marker to mark the valves I have adjusted, then I can see when I have done them all.
As slammins15 said you can adjust the rockers with the engine running and it will make a mess. I have done it that way but I do not recommend it unless you are experienced and quick.
The way I have explained it is the way I do it. It's an accurate and clean way to do it. I use a paint pen or marker to mark the valves I have adjusted, then I can see when I have done them all.
Joined: Jul 2005
Posts: 177
From: Atlantic, NC (eastside whats crack-a-lackin!)
RE: Lose Lifter??
oh crap nevermind you have to manually crank the motor. still shouldnt need to disconnect anything. i dont think you will be cranking the engine over enough that it would start.