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Discussion Starter #1
Hi. I’m rebuilding an engine that I buyed with a cranckshaft fail, and I’m not sure if this oil pump it’s in working order or not...
Have a lot of little marks inside but I don’t know if it’s normal wear or by metal particles from cranckshaft bearings.
What do you think? I need to buy a new one or not?
Thanks in advance.
446287

446286
 

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REPOST Enforcement Mod
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I would say "NO" to that. The score marks and the little brass pieces embedded into it show the bearing debris that got crushed in the oil pump. It should be replaced. It may work OK, but that debris may come out over time and the scoring in it will be "leaky" and the pressure may not be enough. Replace it!
 
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2012 (Gen4) ZX-10R
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850 Posts
Yeah, I would replace the inner and outer rotors on that pump to be safe.

Rob
 

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Gen5
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Discussion Starter #4
Thanks a lot!
I will replace it as you say.
 

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2018 ZX10R SE
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1,008 Posts
Definitely replace that, it should be smooth. It won't build enough pressure with scratches in it like that, trust me, been there done that, not the place to save money.
 
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