Oil problem when starting the engine
Thread Starter
Junior Member
Joined: Feb 2010
Posts: 39
Likes: 0
From: France
Year: 1992
Model: Cherokee
Engine: 4.0
Hi all
Every morning when I start my car, oil pressure make 2 to 3 second before going up`?
What you think? oil filter problem? Oil pump problem?
thanks
Every morning when I start my car, oil pressure make 2 to 3 second before going up`?
What you think? oil filter problem? Oil pump problem?
thanks
Thread Starter
Junior Member
Joined: Feb 2010
Posts: 39
Likes: 0
From: France
Year: 1992
Model: Cherokee
Engine: 4.0
MMMMh, My engine is doing a light tak tak tak before the pressure comes...that is why I'm worried...every morning 2 to 3 second, sounds not so good to me...
Yeah, but a cold engine still shouldn't have lifter tap at start-up
CF Veteran
Joined: Jun 2009
Posts: 5,383
Likes: 5
Year: 1988 limited
Model: Cherokee
Engine: 4.0 litre
Mine has lifter tap and low end knock that's why i use 20w60 oil, everything goes away when i get pressure. if i use 10w40 there is no lifter tap but the low end knock doesn't go away and the oil press goes down when hot.
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Seasoned Member
Joined: Jan 2010
Posts: 339
Likes: 0
From: Near Fayetteville NC
Year: 1993
Model: Cherokee
Engine: 4.0
I got the same thing going on. When i First start my Jeep its pretty low but when i start moving it goes up to 40 psi or so but when i stop at the light or stop sign it can drop all the way down to like 10 or 20 psi. Is this normal also.
I drive a brand new half ton chevy for company vehicle and i can start it every morning in 20 degree weather and it has 2-3 seconds of lifter tap before the oil gets up to the top end. Pretty typical scenario in cold weather, especially if you havent started the engine for along time. Lifters bleed down and oil drains down to the pan.
CF Veteran
Joined: Jan 2010
Posts: 1,087
Likes: 1
From: St Augustine Florida
Year: 1992
Model: Cherokee
Engine: 4.0
put a toggle switch for ign and crank over till you get pressure then fire it up... or replace parts .. sounds wore out.. good ole STP engine treatment or Lucas ...
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