Knocking after reassembly
Road Warrior
Joined: Dec 2012
Posts: 1,335
Likes: 5
From: CT
Sent from my Galaxy Nexus
Road Warrior
Joined: Dec 2012
Posts: 1,335
Likes: 5
From: CT
Really not much can go wrong. Lifters were never out I'm assuming. Lifter blocks off so anti rotation pin could have not been reinstalled. That would be bad. Rockers not tightened down. Pushrods installed incorrectly.
Sent from my Galaxy Nexus
Sent from my Galaxy Nexus
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Road Captain
Joined: Aug 2012
Posts: 712
Likes: 49
From: NH - Live Free or Die
Ok. Forgive me and don't flame me...
When you say verify that they have a load on them but are not holding a valve open what do you mean?
If I get the front cylinder at TDC and on compression, the front pushrods spin freely and the rear pushrods do not turn.
When you say verify that they have a load on them but are not holding a valve open what do you mean?
If I get the front cylinder at TDC and on compression, the front pushrods spin freely and the rear pushrods do not turn.
Road Master
Joined: Apr 2012
Posts: 1,096
Likes: 17
From: San Jose
At TDC compression a lifter should have .100" preload. With out the motor running and creating oil presure you should be able to spin the push rod with some resistance. But there should be no play. And they both should be the same.
To confirm compression stroke, rotate the engine a little in each direction, niether rocker should move.
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Road Captain
Joined: Aug 2012
Posts: 712
Likes: 49
From: NH - Live Free or Die
I hadn't pulled the second cover because it's a PITA. Had just pulled off the clips on the pushrod tubes to verify they were in the correct position. Just pulled the cover and everything appears correct.
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Road Captain
Joined: Aug 2012
Posts: 712
Likes: 49
From: NH - Live Free or Die
No flame, I am here to help.
At TDC compression a lifter should have .100" preload. With out the motor running and creating oil presure you should be able to spin the push rod with some resistance. But there should be no play. And they both should be the same.
To confirm compression stroke, rotate the engine a little in each direction, niether rocker should move.
At TDC compression a lifter should have .100" preload. With out the motor running and creating oil presure you should be able to spin the push rod with some resistance. But there should be no play. And they both should be the same.
To confirm compression stroke, rotate the engine a little in each direction, niether rocker should move.
Road Master
Joined: Apr 2012
Posts: 1,096
Likes: 17
From: San Jose
Just the cyl on TDC. But the push rods should not spin freely, they should have some resistance.
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Road Captain
Joined: Aug 2012
Posts: 712
Likes: 49
From: NH - Live Free or Die
All 4 pushrods are spinning. The rear cylinder definitely has more resistance than the front. What am I doing wrong here?
1) Pulled rocker covers, clips on pushrod tubes and spark plugs
2) Put a piece of paper towel in the front cylinder spark plug hole and rotated rear wheel until it popped out. Used a pencil in the hole to verify it was at the top.
3) Rotated the wheel back and forth to verify and rockers didn't move.
1) Pulled rocker covers, clips on pushrod tubes and spark plugs
2) Put a piece of paper towel in the front cylinder spark plug hole and rotated rear wheel until it popped out. Used a pencil in the hole to verify it was at the top.
3) Rotated the wheel back and forth to verify and rockers didn't move.
Road Master
Joined: Apr 2012
Posts: 1,096
Likes: 17
From: San Jose
All 4 pushrods are spinning. The rear cylinder definitely has more resistance than the front. What am I doing wrong here?
1) Pulled rocker covers, clips on pushrod tubes and spark plugs
2) Put a piece of paper towel in the front cylinder spark plug hole and rotated rear wheel until it popped out. Used a pencil in the hole to verify it was at the top.
3) Rotated the wheel back and forth to verify and rockers didn't move.
1) Pulled rocker covers, clips on pushrod tubes and spark plugs
2) Put a piece of paper towel in the front cylinder spark plug hole and rotated rear wheel until it popped out. Used a pencil in the hole to verify it was at the top.
3) Rotated the wheel back and forth to verify and rockers didn't move.