 Stock Oil Pump Evaluation, Stock Oil Pump |
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| Highland |
 Jul 30 2018, 03:05 PM
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#1
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Senior Member  Group: Members Posts: 513 Joined: 8-August 11 From: San Diego, CA Member No.: 13,418 Region Association: Southern California  |
This stock oil pump came from a running motor. I didn't have a guage, but the dummy light always stayed off.
Is this normal or is this pump dead? Surprisingly it feels smooth to the touch.  |
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| barefoot |
Jul 30 2018, 03:15 PM
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#2
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Senior Member Group: Members Posts: 1,273 Joined: 19-March 13 From: Charleston SC Member No.: 15,673 Region Association: South East States 
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How gouged out is the housing? One look into mine and I flicked it.
replacement pumps are cheap |
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| Highland |
Jul 30 2018, 03:36 PM
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#3
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Senior Member Group: Members Posts: 513 Joined: 8-August 11 From: San Diego, CA Member No.: 13,418 Region Association: Southern California |
Housing looks good to my amateur eye.
I just noticed it's not the greatest picture, but everything is smooth, no gouges.  |
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| Valy |
Jul 30 2018, 07:39 PM
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#4
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Senior Member Group: Members Posts: 1,675 Joined: 6-April 10 From: Sunnyvale, CA Member No.: 11,573 Region Association: Northern California |
Those marks are probably corrosion. It might be that the engine had a long unused period. I would not worry much because of that.
What you should look for is the free tuning gear pin. That pin tends to dislocate and hit the camshaft gear. That is the most common failure of the type 4 pump. |
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| Highland |
Jul 30 2018, 10:12 PM
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#5
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Senior Member Group: Members Posts: 513 Joined: 8-August 11 From: San Diego, CA Member No.: 13,418 Region Association: Southern California |
Yes, the engine sat in my SoCal garage for about 3 years not running, but assembled and full of oil.
Is this the pin your're referring. It's solid, so I'm glad I don't have to go shopping for a new pump.  |
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| Valy |
Jul 31 2018, 12:00 AM
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#6
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Senior Member Group: Members Posts: 1,675 Joined: 6-April 10 From: Sunnyvale, CA Member No.: 11,573 Region Association: Northern California |
Yes.
Show a picture of the opposite side of the pin. If the pin is not flush with the pump internal cap, then the pump is done. See this: http://www.914world.com/bbs2/index.php?s=&...t&p=1534942 |
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| Highland |
Jul 31 2018, 12:50 AM
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#7
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Senior Member Group: Members Posts: 513 Joined: 8-August 11 From: San Diego, CA Member No.: 13,418 Region Association: Southern California |
Like this?
 Thanks for the help. |
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| Valy |
Jul 31 2018, 10:25 AM
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#8
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Senior Member Group: Members Posts: 1,675 Joined: 6-April 10 From: Sunnyvale, CA Member No.: 11,573 Region Association: Northern California |
Yes.
That one looks good. You don't want that big pin comming out. |
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