After completing engine overhaul the engine oil pump keeps seizing

PAUL CHINHEYA

MEMBER
1997 MAZDA B2200
2.2L
4 CYL
2WD
MANUAL
300,000 MILES

I did an engine overhaul on my vehicle listed above petrol. The engine oil pump seized before the engine could start. I fitted another oil pump still it seized again. What could be causing this problem?

Sunday, July 7th, 2019 AT 8:48 PM

4 Replies

SCGRANTURISMO

MECHANIC
4,897 POSTS

Hello,

I'm not sure why the oil pumps you installed failed, but in the diagrams down below I have included the Original Equipment Manufacturer (OEM) part number for the oil pump, torque specs for fastening it, and instructions from the manufacturer on the removal and installation of your vehicle's oil pump. Please go through these guides and get back to us with how everything goes.

Thanks,
Alex
2CarPros

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Sunday, July 7th, 2019 AT 9:33 PM

KEN L

MASTER CERTIFIED MECHANIC
47,513 POSTS

It sounds like you got the crankshaft bearing in upside down and the oil supply holes are in the bearing cap not the block. Can you confirm the bearing is in correctly?

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Monday, July 8th, 2019 AT 12:25 PM

PAUL CHINHEYA

MEMBER
2 POSTS

Hi, I confirm the bearings were fitted correctly. They can only fit one way.

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Monday, July 8th, 2019 AT 12:43 PM

SCGRANTURISMO

MECHANIC
4,897 POSTS

Hello again,

If the correct oil pump was installed then the only thing that I can see that would cause the pump to fail would be that that oil pump hole in the block is plugged or the new oil pump didn't get properly primed prior to operation. Please let us know how things are progressing.

Thanks,
Alex
2CarPros

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Monday, July 8th, 2019 AT 2:06 PM