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no oil pressure

1338 Views 7 Replies 4 Participants Last post by  j criss
Hi first time writer i have a 2000 EX and had to repo from some people that dump dirt in the oil removed the valve cover on the pass sire and vaccumed out all the rocks drained the oil and poured diesel down to flush let dry also found ipr to be stuck pulled apart and cleaned got oil pressure but no start then pulled hpop and found rocks in the screen in the resivor cleaned out everything got new pump and ipr installed and started right up drove 60 miles parked it next morning started right up drove a mile and died crancking no oil pressure wts light is coming on tach is moving any suggestions thanks josh
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Rocks in the HPOP screen? How did it get past the Pick-up in the pan? I'ts screened... coarse, but still a screen. then how did they get through the LP oil pump? If you have ever seen one apart, how a rock would get through it is beyond me???

My guess is the ICP sensor, and or IPR have more debris in them. I'd say to pull the wiring off the ICP sensor and try to start it, but the thought of it actually starting makes the hair on my neck stand up! Having just put my motor back in last weekend isn't helping this sensation either.
Thanks for writing whats wierd is that after i cleaned it out the best i could new pump and ipr it started right up and ran all day no check engine lights then dies the next day
The low pressure oil pump is a gerotor pump a virtual rock crusher. The rocks sure didn't go thru there, they had to be poured into the oilfill neck. Look at page's 40 - 41 for the lube system route. Takes awhile to load but very informative.
i changed the ipr today it started right up ran for 30 mins pulled up to stop sign and died but oil pressure was good in side the cab
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