Miles and age is just a number if you take care of things . True believer in that .
@fastinradfordable10 ай бұрын
New tire tech at work says ‘my car has 280k it can only last so long. I showed him my 81 vw that had 300,000 miles on it over 11 years ago it’s been my daily since. Crossed the country more than a dozen times.
@pigtrapper132910 ай бұрын
You are pretty awesome man!!! I bet you'll get to a million subscribers. I hope so. You deserve it!!
@dexjs10 ай бұрын
Maybe one day! I hope these comments are real people and no AI bots !!
@pigtrapper132910 ай бұрын
@dexjeeps no bot here. Just a redneck from oklahoma who loves older 4x4s and learning tricks so I don't have to work as hard
@Papabear7t310 ай бұрын
My 275k 4.0 doubled oil pressure with just a standard volume pump. Biggest take away is the pumps wear period and cause a drop in pressure. Great video content overall. Keep it up!
@dexjs10 ай бұрын
Great point! Thanks
@Hillsautomotive8 ай бұрын
Agreed. I think the same about cooling systems and other components. No, you dont need the dilly-deluxe fancy “upgrade”. Your jeep is just old and tired, and new oem everything is perfectly fine for every jeep 95% of the time
@edwarddavis50710 ай бұрын
Dex tells it like it is! Every engine is only as good as the people working on it the day it was put together.
@brianlook630610 ай бұрын
From the first couple minutes running with used oil and old oil pump to the final test with new oil, filter, and pump is a commitment to the quality content you are putting out. Props my friend. It wouldn't surprise me that the old pump just wore a .00001" on the little paddles causing it to not hold pressure at the lower RPMs and hot oil. Since you didn't find any other signs when you dropped the oil pan or inspected the filter. Keep up the great videos. Definitely a subscriber!
@nickmanwebb1410 ай бұрын
Another great super informative video! You just gotta stop giving attention to all the haters and people constantly trying to say you're lying or hiding stuff don't let them kind of people drag you down.
@hillbillygaragecs292110 ай бұрын
GRATE job you know that lots of some the same problems can be fixed differently you can have 10 jeeps that are running bad and sometimes 10 different fixes will fix them you can have one with a skip plug a wire inside the distributor cap a coil head gasket bent valve broke valve springs bad plug boot bad wire to coil injector just so many things and you may have to come up with a crank sensor cooler heat shrink or just use your windshield washer to sprayer to cool it may have to run that wetter water in it and bigger tank cause sometimes you may not be able to get out to get water to pour on by yourself.....love to watch videos this is what I dofor a living also ..
@victorcastrejon667910 ай бұрын
Love this explanation, seems like I may have to try a high oil pressure pump on my TJ
@dexjs10 ай бұрын
Got a better video in the works but definitely helps out.
@janetbrowder668510 ай бұрын
Might consider a separate video where you use both gauges, monitoring oil pressure with Fram, Wix, Mighty, NAPA, and Mobil 1 filters to see if specific filters hold better oil pressure. Could use same oil for all tests.
@ramcharger914610 ай бұрын
Napa Gold oil filters the way to go
@nathanmccumber89659 ай бұрын
Walmart got the Mopar oil filter 8 bucks.
@deanks71110 ай бұрын
Man you gotta keep makin videos the world needs your knowledge
@migs90910 ай бұрын
I used electrical tape to make sure the oil switch was always in the connector. I started moving it around and saw the oil pressure gauge in the dash start fluctuating. Oil pressure seems to read mostly accurate now that it’s not a loose wobbly connection. This video is making me wish I went with a high volume pump now, but the standard volume one is good !
@acfrmlc10 ай бұрын
when I have torn down motors from oil starvation or pressure issues its almost always cylinders the furthest from the oil pump. I am also dealing with this oil issue on a service van I have bought. Thanks for the video!
@dexjs10 ай бұрын
Yep. End cylinders have to get the worst wear I’d think
@tomsmith23617 ай бұрын
My black 01 XJ with same interior running smooth again after new camshaft, lifters,rods, timing chain, tps🎉😊. Good luck with your project 👍. Mine is bone stock 😊
@johnnygreen73010 ай бұрын
My 00 with a fresh milling high output pump was an absolute unit for oil pressure. 80mph for 2 hours and it would idle at 40
@trentonbrown517510 ай бұрын
Great video on oil pressure issue, thank man
@dexjs10 ай бұрын
Glad to help!
@keetoniswhat10 ай бұрын
Biggest takeaway from this is to add an aftermarket gauge. 😂 Good info! I’ve heard some people say worn cam bearings is what makes the oil pressure drop, but the way that main bearing looked, I’d have a hard time believing yours would be worn cam bearings.
@dexjs10 ай бұрын
Who knows. I keep hearing cracked block 🤷🏼♀️
@contraband15439 ай бұрын
I changed the rod bearings on a 300 inline 6 Ford and it had no oil pressure before but after it had "acceptable" oil pressure lol It was also knocking and it's still driving 5k miles later with no knock.
@Redtash110 ай бұрын
Have to remember with high volume oil pumps that it moves more oil, so unless you have a higher than stock capacity oil pan that you potentially will starve the engine of oil because alot of the oil won't have time to flow back down from the head to the oil pan.
@jerrywhalen210010 ай бұрын
I don't think that would be an issue I think it would flow back
@chrismarsh997810 ай бұрын
Another Great video Dex !!!
@dexjs10 ай бұрын
Appreciate it. Got better one coming soon!!
@turnerappleton502610 ай бұрын
Don’t listen to the haters! Ur videos are awesome and legit I’ve had a couple Cherokee’s a 96 4door and a 98 2 door 5 speed they were awesome
@dexjs10 ай бұрын
I appreciate that! Just new to all this. Learning!
@danieljohnson8437Ай бұрын
Thx, X.J. Dr.
@rustypotatos10 ай бұрын
Thank you for posting this video
@lincolnbliss48853 ай бұрын
I bought a rebuilt cherokee last year and the engine blew up on the drive home because the brand new oil pump in it died on the express way. When I mean died I mean instantly. The oil pressure tanked in less than a second and the check gages light came on and beeped at me. Immediately I pulled over and shut it off but it was too late. The motor was knocking from spun bearings. I put a different motor in it that I rebuilt myself so I knew what was in it. I used parts from Rockauto including the oil pump. The day I drove it for the first time after the swap the oil pump did the exact same thing. It began loosing pressure on the express way but not as fast this time. I watched the gage sink from 40psi to 12 over the course of 5 minutes so I turned around Immediately and started heading back. At idle the pressure dropped to 0 so I had to put it in neutral and rev it to keep the pressure up. I drove the rest of the way back in 1st gear to keep the revs up and when I got back I let it cool down. Then I fired it back up but this time the pressure spiked to 80 psi and stayed there at idle. I thought I was going nuts. There's no way I could have the same problem from 2 different motors. But it was the pump. The manual gage was reading over 200 psi and my oil filter exploded from the pressure. It turns out that the oil pump from the first motor was also from rockauto. They were the high end pumps too. I replaced the oil pump with a melling just like the one in your video and so far I've never had an issue. I'm not slamming rockauto they sell some great stuff but I'd personally never buy an oil pump from them again.
@DB-yj3qc10 ай бұрын
My 90XJ got great oil pressure until a shop talked me into replacing it when the shop was replacing the rear main seal and pan gasket. On way home from shop the pump failed and trashed the motor. The shop replaced it with a used engine, it never had good oil pressure it got about what that one did. BTW: I used that dump water on it with om 91MJ for awhile before I replaced the CPS too. That was in 99. 👍
@v12alpine10 ай бұрын
I try to avoid high volume pumps if possible. It puts alot more stress on the distributor drive gears and can wipe out the cam. Especially with a parts store chinese distributor/gear. First thing I do with these is find a OEM drive gear at the junk yard.
@nolanduarte10 ай бұрын
Agreed the material quality matters
@Deadbuck7310 ай бұрын
Love the video!
@jakesnow206110 ай бұрын
From aus here loven your channel mate have learnt a lot of things from your videos keep ‘em up man 👌🏻🤟🏻
@dexjs10 ай бұрын
Thanks, will do!!!
@westurnbull555610 ай бұрын
Quick question what size height and width beadlocks do you guys run?? You’re my favorite KZfaqr/Mechanic man keep up the good work!
@dexjs10 ай бұрын
Depends. I honestly bought this jeep as is. Mostly 15x10 wheels with 33x12.50 tires but I’m thinking going back to 15x8s. We will see!!
@trev11910 ай бұрын
@@dexjs15x8 way to go!
@mineaim706610 ай бұрын
19:05 I just went through the same thing!
@janetbrowder668510 ай бұрын
Good content. Certainly seems a high volume oil pump would give better pressure on gauges. Maybe you can do very similar test on a Grand Cherokee, proving it does help.
@scaletrailers8010 ай бұрын
Nice info, the xj i have now runs around 50 after running and I never seen one hold so well till this video. Wonder if mine has been upgraded
@dexjs10 ай бұрын
They vary so much. Over time I want to pinpoint all the different variables. We will see.
@user-mw2er7ol6j10 ай бұрын
I put a nee engine in my cherokee and also put a melling hv oil pump in it and it did just like yours 65-70 at cold start 45-55 driving hot .after 3 years its back to 30 hot idling and maybe 45 -50 hot driving .so i believe it did help even with a new engine.i also had to massage oil pan .problem i had was on a steep incline after hv oil pump it was sucking pan dry and losing pressure. now i just run a extra quart in pan and everything is ok
@fastinradfordable10 ай бұрын
Adding an extra quart creates maddd windage and probably froths the oil even if the pump isn’t sucking it dry. The moral of the story is: your engine is a system. And replacing one part of a system is a slap in the face for any engineering that took place.
@user-mw2er7ol6j10 ай бұрын
Sure aint gonna last long without oil pressure though😅😅
@rodneymoore34857 ай бұрын
Love your video's keep up the good work.
@user-mw2er7ol6j10 ай бұрын
Always heard on jeep 4.0 u lose pressure in the cam bearings .dont know but my old engine had 5-10psi oil pressure at hot idle .mains and rod bearings looked good .but cam bearings were def worn .i dunno i def aint no mechanic though
@dexjs10 ай бұрын
I’m trying so hard to pinpoint that but I got so many things I’ve heard too.
@nathanmccumber89659 ай бұрын
@@dexjs I use Mopar filter are those still good or is mobile 1 better ? Got 98 xj.
@deanks71110 ай бұрын
Ps my 4.0 is doing this exact thing is it ok to drive when the oil pressure is low like that everything seems fine no noise or anything just trips me out. High pressure on start up then it gets running for a bit and drops down
@barnzs9810 ай бұрын
Just out of curiosity, I have scene your wood stove in older videos, now just the stack. Do you take it out in the summer months.?
@dexjs10 ай бұрын
I do. I’m very weirdly ocd about stuff in my shop.
@tictokfunnymoments995710 ай бұрын
Where is your shop I didn’t know you live in Tennessee
@janetbrowder668510 ай бұрын
Bethel Springs, TN 38315.
@Deadbuck7310 ай бұрын
That’s where all the jeeps are?
@avalanchemanmw9 ай бұрын
Great job Dex!
@jackrussellville9 ай бұрын
I'm really interested in the results of your research on this experiment
@dexjs9 ай бұрын
Finished the editing tonight actually
@jamesherald505010 ай бұрын
I’ve got a2000 model just like that. It a classic. I’ve had problems with starters and clutch fan
@dexjs10 ай бұрын
Clutch fans are on the list
@devensettlemires272210 ай бұрын
Mine next?? I’m right next door lol
@JOMaMa..10 ай бұрын
Very common issue with these tractor engines is worn camshaft bushings
@user-iv1vm5mi3i10 ай бұрын
I got one for you.... same black cherokee sport. Oil stays on the bottom line when hot haven't put the mech gauge on it yet but will soon to see bc I've replaced like 4 sensors so far
@dexjs10 ай бұрын
So just no oil pressure?
@user-iv1vm5mi3i10 ай бұрын
@@dexjs sorry not the bottom the first tick mark which is like 10 psi maybe... It like yours 50 on start up but drops low when it's hot. I put a new OE oil pump own it in the first year I had it because I guess the gauge went out and it dropped down to zero on my way home one day... But still the same after almost 5 years now. I know it has some pressure but I'm lazy bc I work on vehicles all day so I haven't checked it with my mechanical gauge.
@Midwest_XJ10 ай бұрын
What are you using for your driveshaft with that lift? I’d love for you to do a video on this topic and other issues that come with aftermarket modifications
@Youngin692310 ай бұрын
Do you believe in oil additives like Lucas oil products or marvels mystery oil?
@NCMATT10 ай бұрын
I think it starts in the pump and goes to other parts 🤔 THAT WHAT I THINK .
@dexjs10 ай бұрын
Working on new video with better answers.
@leftlanedrivers8 ай бұрын
Love your content
@mikealmiracle483410 ай бұрын
Yeah man I just put that pump in my 98 and it’s a little better but when fully warmed up it drops to nearly zero psi. Keep up the awesome videos. Also do you have some good seatbelts for a 98 you’d sell?
@TexasRedneck10 ай бұрын
How do you keep track of all the titles for the jeeps? haha
@dexjs10 ай бұрын
Haha. All by year and what I’m gonna do with them.
@Tanner73110 ай бұрын
you couls use rotella 5w-40
@LIL1DOPES10 ай бұрын
Maybe you can troubleshoot and/or work on 5.2 zj with a 44re maybe hopefully if there's any in the yard? 🤔😅
@TheRealMikeWilly9 ай бұрын
Miles don't matter on an engine kuz you can put 200,000 miles on a motor in 3076 hours @ 65mph. But if you idle a motor for 3076 hours, even if you change the oil every 3000 miles on the 200k motor and every 500 hours on the idling motor, the 200k motor will be in MUCH better shape than the idling motor.
@dexjs9 ай бұрын
Very very true comment. I can’t get that to etch into peoples heads. Just miles..🤦♂️
@isaaclayne310510 ай бұрын
had a beater 98 that held 1 psi on a manuel gauge ran it for abt a year never changed the oil jeeps still going
@trev11910 ай бұрын
I just don't believe that at all
@ctwolfgang43310 ай бұрын
My Cherokee reads 40lb all the time. Idle or rpm. What should I make of this?
@dexjs10 ай бұрын
Just put gas in it !!
@macattack139210 ай бұрын
Edit: nvm u said a few times in video & i saw it. Lol. My bad U said google stopped filming & thats android. I 1st wrote wondering if u used android phones to record. However, saw the go pro. (Havent used 1 before, so idk what playform it uses.)
@rustypotatos10 ай бұрын
Did you change the rear main seal as well?
@dexjs10 ай бұрын
Yes of course being that close 💪
@rustypotatos10 ай бұрын
@@dexjs could that have helped pressure?
@skeetermcswagger0U81210 ай бұрын
Oddly enough when my crank sensor acts up I just unplug it and plug it back in at the top of the engine near the cylinder head and valve cover and then it starts working fine again, I've been doing that for years.( It only gives me problems when I've left it parked for more than a month....)
@TexasRedneck10 ай бұрын
I'll never use a Fram filter. Trash, utter trash. Lost a 4.0 to one of them collapsing.
@lincolnbliss48853 ай бұрын
I only use wix or mophar. I had the same experience with a fram coming unglued and causing a blockage like you.
@TexasRedneck3 ай бұрын
@@lincolnbliss4885 Had another friend that was noticing very low oil pressures in his truck. He was out of town and thought to just change the filter as I told him the FRAM filter sucks. Changed just the filter and oil pressures went back to normal.
@itsaktive517510 ай бұрын
Dex what’s your favorite oil for a 2000 jeep Cherokee 4.0?
@Tanner73110 ай бұрын
use the cheapest oil you can get and change it more often, I use rotella 10w-30. a 5w-30 or 5w-40 would be good too
@aaronkangas581710 ай бұрын
I use 15w 40 rotella used it for years stuffs great
@dexjs10 ай бұрын
With getting technical any “diesel” oil is what you should be running. Or anything with zinc.
@atozproductions966010 ай бұрын
Just put that 20 something dollar good zinc adative in there Seems to be running better than the engine restore I usually put in Thanks for the zinc tip I found on another video their dex👍
@Anthony_Adventures10 ай бұрын
After about 2 hours of driving in mine with the 15w40 when I come to a stop and idle I drop to zero oil pressure but when you tap the gas and start to move it builds 20psi right away
@fastinradfordable10 ай бұрын
The stock gauge is totally inaccurate Uncle Tony showed his XJ reading with no sensor even connected.
@Anthony_Adventures10 ай бұрын
@@fastinradfordable right I’ve yet to put a manual gauge on my XJ and see if it’s reading what the gauge says but I think it’s pretty close due to the conditions being the same every time it happens
@Yelladog783 ай бұрын
I'm not claiming to be an expert but most of the time in my experience low oil pressure is from cam bearing wear
@dylangrzywinski121810 ай бұрын
I'll do it on my jeep an let you know after driving mine for awhile it drops down to 15psi maybe lower I put thicker oil in it an it was the same after awhile of driving I'll see if this pump will help me out but if not, dex come buy my jeep I'm in Indiana bring 2k with you... but I'll let you know
@ShopWithLogo9 ай бұрын
What oil & weight do you recommend for a 4.0
@jessiecramer941610 ай бұрын
Do you ship parts
@dad35622 ай бұрын
What’s your preferred oil ?!
@chrisirvin857310 ай бұрын
How much u asking for that jeep?
@cablenowadays658610 ай бұрын
So what wrong if my jeep runs at 10psi or so at hot and like 30psi at 2k rpm. Its been doing it for 100k miles and bearings look good when i did rear main.
@timcollins928710 ай бұрын
Bad sensor?
@chopp214510 ай бұрын
I’m a left lane driver
@dylanollis100210 ай бұрын
Jeep calls for idle to have 13psi.
@dexjs10 ай бұрын
Jeep or the Haynes manual?
@jaygraham54078 ай бұрын
Who is to say that a new high volume oil pump only cures the problem of a worn stock oil pump??? Maybe a new stock oil pump will make the same difference??
@shaneshonda10 ай бұрын
Volume doesn't equal pressure.its gpm is higher not the psi.same idea behind a commercial pressure washer at 900psi vs a cheap one at 1500psi.the commercial will flow more even at lower psi
@dexjs10 ай бұрын
I get that argument but I feel there’s a lot of variables to account for.