oil pump problems???

Information on the naturally-aspirated KA24E and KA24DE engines.
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lucky03602
Posts: 483
Joined: Sun Sep 26, 2004 4:29 am
Car: 96 d21 *work in progress*
01 xj Cherokee auto 4.0 4 1/2" lift 32x11.5x15 family dd
Location: keene, nh

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okay first off 90 kae

ok car was sitting all winter no biggie. one warm weekend started it up let it run (lifters were knocking) and then 25 mins later shut it down (car was "warm" by then) checked the oil and im low. drove the car to store bought 2 qts of 10w30 and it was 1 1/2 qt low. so now oil is full

well 2 weeks later (today) start it up, let it run for a good 20 mins to get "warm" and drove 1/8th mile to my friends house to say hi. stayed there for about half an hour. well leaving i came out and my lifters we knocking again (i know there not lifters, i just call it that) when they werent when i first started it.

got in my car oil light is on. oh great im thinking. well then it goes off and on and off not in a pattern its random. so i drive it slow, when im driving it the oil light stays off, while im idleing its on. so i get home shut it off and check my oil. oil level is full

so im assuming my oil pump is dieing on me. any other objections?


KATwo40
Posts: 1761
Joined: Tue Feb 01, 2005 9:40 am
Car: 1993 240sx KA-T

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Most likely crank bearings are worn far enough that there's low oil pressure at idle...low enough to turn the light off. Then, when the rpm's rise, the light goes off because the pressure increased.

I'd say do a compression test. If all looks decent, yank the pan and crank assembly, throw a new set of bearings at it and rock on.

Most likely, the compression will also be low, since you're running an engine having over 230k miles on it (according to the sig.), in which case just find a new motor.

User avatar
lucky03602
Posts: 483
Joined: Sun Sep 26, 2004 4:29 am
Car: 96 d21 *work in progress*
01 xj Cherokee auto 4.0 4 1/2" lift 32x11.5x15 family dd
Location: keene, nh

Post

so basically just say screw it and either find another motor, or find a crappy 91-94 for cheap and swap in the dohc, good enuf thx!


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