EVO All Evo Model Discussion

Oil pump or drive?

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Old May 23, 2022 | 06:30 AM
  #61  
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Post up a pic of the breather...
 
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Old May 23, 2022 | 06:58 AM
  #62  
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[QUOTE=splittie65;20626043]I turned the key around to 3.30 and then carefully tried to take the cam cover off.

At last, something going my way! It came off quite easily.

Below are some photos.......it looks like the plastic cog has some teeth stripped.

I am assuming this is my problem and I just replace it and put it all back together?



/QUOTE]

The breather gear's your problem. Line up the dots on the other two gears and replace the breather gear.
I'll bet where it's stopped is with the screen is facing away from the pump, restricting or blocking oil flow.
Why it broke is another question, could just be age or something bound it up. (that's why it's plastic, it's designed to break if it gets bound up)
 
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Old May 23, 2022 | 07:04 AM
  #63  
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The breather wouldn`t restrict oil flow, it would only block the return path.

You need to look at the inner cam bearing and the lifters.
 

Last edited by Dan89FLSTC; May 23, 2022 at 07:18 AM.
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Old May 23, 2022 | 07:14 AM
  #64  
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Originally Posted by 98hotrodfatboy
Post up a pic of the breather...



 
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Old May 23, 2022 | 07:26 AM
  #65  
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Key intact....don't know how visible that is.


 
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Old May 23, 2022 | 07:52 AM
  #66  
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Old May 23, 2022 | 07:58 AM
  #67  
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Breather looks good, how deep are the groves on the bore.. hard to tell from a pic.. Might be able to just replace.. I personal like the S&S metal breather..

Ok the feed side of the pump is intact,. Turn the motor over by hand to confirm the pump shaft rotates.. Then pull the entire pump and check the key for the scavenger side..

And as Dan said at some point we will need to confirm cam bearing..
 

Last edited by 98hotrodfatboy; May 23, 2022 at 08:00 AM.
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Old May 23, 2022 | 08:06 AM
  #68  
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I've noticed that the two pinions in my last picture are locked solid.

Are they supposed to be free moving?

Almost looks like a piece of black plastic at the tightest point.....or is that just my imagination?
 
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Old May 23, 2022 | 08:16 AM
  #69  
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Originally Posted by splittie65
I've noticed that the two pinions in my last picture are locked solid.

Are they supposed to be free moving?

Almost looks like a piece of black plastic at the tightest point.....or is that just my imagination?
Are you talking about the gears in the pump? They should rotate.
I'd remove the pushrods before rotating anything so it doesn't just fall out on you.

Griz
 

Last edited by IBDAGRIZ; May 23, 2022 at 08:19 AM. Reason: Rotation thoughts.
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Old May 23, 2022 | 08:32 AM
  #70  
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This is where it might be locked together with a small piece of plastic?


 
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