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Im having problems with oil pressure at idle. Stock in the book says its sopost to be at 10psi. Im at like 2 to 4psi. I took all my oil lines off today and installed a gauge lik ethe honda book shows to test the oil pressure from the back of the block and its at 2 to 4. You think the oil pump is taking a crap? Honda service manuel says its either a dirty filter or the oil pump. Well today I changedthe oil and even bumped up to 10w30 to see if it would make a difference and the same 2 to 4 psi. Anyone had to replace an oil pump yet?

 
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I'd make sure the gauge is hooked up properly before you start troubleshooting the oil pump.

 
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The gauge has worked just fine up till about a week ago when i started noticing it drop in pressure. So maybe it is the gauge dont know will have to test it.