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2000 jeep cherokee pistons Videos

DIAGNOSED - 2000 Jeep Cherokee 4.0 Broken piston

This is what a broken piston skirt on 5 sounds like.

User Comments

Jonathan Riddle commented on 28 Oct 2012

U know the more u run that engine like that the more work u gonna have to fix that cylinder -,- I know because my jeep did the same thing but i shut her down soon as it happened saved my self alot of work and money.

solo514 commented on 31 Oct 2012

No shit, Sherlock, but you have to diagnose the problem. Thud turned out to be a broken piston skirt. Motor got rebuilt anyway.

solo514 commented on 07 Feb 2013

No problem. At least yours spit the metal out in short order. Mine held onto it forever, making diagnoses not so easy.

MrShad73 commented on 07 Feb 2013

thanks for the video. Dropprd my pan and #5 piston broke.

Drew 1902 commented on 25 Aug 2015

Did that noise go away once the engine got warm?

1993 Jeep Cherokee 4.0 Broken Piston

Ok so here's the story, I got this Jeep with a knock in the engine. I have a good smooth running 4.0 to put in. Since my other vehicle had an issue, I began driving ...

User Comments

C and B tractor collectors commented on 20 Dec 2012

That is the second to worst sound the only worst engine noise is a non running one

odzadze123 commented on 04 May 2014

TWO STROKE engine in JEEP ! :)

Zachary Mellott commented on 23 Feb 2015

Yup that engines blown

SkitXxo riviera commented on 11 Oct 2012

Popcorn machine.... :)

droidrazor873 commented on 10 Feb 2015

4.0 two stroke!

89 Cherokee 4.0L Piston Slap & Replacement

User Comments

colin drissell commented on 31 Jan 2016

If you just take off a ht lead when it is running you will notice the noise will change due to taking load off piston when you were trying to find problem.

NickInTimeFilms commented on 31 Jan 2016

+colin drissell Surprisingly that didn't change the noise at all. The only thing that made the noise go away was physically removing the spark plug because the compression was still enough to make it knock.

joe8388 commented on 21 Jan 2016

Got lucky because the engine was so new--never let anyone build your motor but yourself

joe8388 commented on 21 Jan 2016

Don't mean physically do the machining, let the engine shop do the machining work, and then you assemble. This way you personally see how everything is fitting together

NickInTimeFilms commented on 21 Jan 2016

+joe8388 Believe me, If I had the machinery to build an an engine, I would have.

LZDEN commented on 17 Jan 2016

nick..did you place the ring gap at 120 degrees to each other? ,,its very important that you did.

LZDEN commented on 17 Jan 2016

well mate the rings can move around the piston..what you could have done is set the rings at 120 degrees from each other and then used the ring clamp and tapped the piston into the block..the engine sounded nice.

NickInTimeFilms commented on 17 Jan 2016

+LZDEN I didn't assemble the piston, but I believe my engine builder did.

ThunderHead289 commented on 15 Jan 2016

i dont subscribe to much, but i have enjoyed your jeep adventures. i drive a 2003 as my winter vehicle. 155k miles. lifters are ticking bad, though it comes and it goes. anyway, ill be pulling the engine out and freshening her up for another 50k or so. im not sure why they never converted to rolller cam stuff. just a heads up, you have to run a zinc additive or you will be wearing your cam quickly. modern oil is not your friend on flat tappet cam stuff. ..

NickInTimeFilms commented on 15 Jan 2016

+ThunderHead289 Better then having to take the engine out again. Just cleaned it up real good before hand

ThunderHead289 commented on 15 Jan 2016

+NickInTimeFilms oh yes, I remember you showing how tight your wrist pin was. No idea how that happened. Might have just been a poorly made piston. Shame you had to hone a cylinder with the engine together

NickInTimeFilms commented on 15 Jan 2016

Had an overheat issue climbing a steep hill, let it cool before driving it back. No problems then but I'm think the wrist pin may have binded up a bit. Next morning it was cold and I was still using straight 30 weight oil for the break in. after 10 minutes of driving the noise started, so i'm not totally sure.

ThunderHead289 commented on 15 Jan 2016

it is old. old as hell. which isd why it runs forever. a straight six will anyhow since it is a perfectly balanced engine. i just wish it did, adding zinc gets annoying. and im an engine guy! lol - did you ever determine what caused your ring to fail and then destroy your piston? seems like more than an oiling issue? never seen that happen on a fresh engine before.

NickInTimeFilms commented on 15 Jan 2016

+ThunderHead289 Roller cams and valve train is expensive and the straight six is a pretty old motor. If it ain't broke, don't fix it. haha. I did add some ZDDP additive.