97 Jeep Wrangler Timing Chain Repair! 2.5L 

Haha Long Jeep! Yeah, I think most everyone that wrenches on their own stuff has that feeling from time to time. Thanks!

Thanks a lot Bernie!

Great Idea Ed! That would be too funny HAHA!

Thanks Cyotedude! Good luck on your project. Hope it goes well and don't hesitate to ask a question. I will be glad to answer if I can.

Thank you Brad!

Awesome Ethan! Glad you watching and doing your own work!

Cool, Mine are really quiet after it warms up.

Thanks Mark! Yeah, I don't know what some people are thinking when the repair things. Leaves a big mess for the next guy lol.

As a Jerry by birth, I'm totally against jury-rigging a fix.

Thanks Gonzo! Glad you liked it! Good luck with your repair.

Thank you Jody! Welcome onboard! Thanks for watching!

I have since rebuilt my engine. Nothing in oil pan other than the broken piston skirt lol. I have a video on the engine rebuild. Thanks for watching!

Our Jeeps are definitely related lol! Thanks Pete!

You are welcome! Thanks for watching

You are very Welcome!

Good eye. I don't know about the 4.0l but not all 2.5l have it. I checked the factory service manual. Thanks for watching!

Thanks Corey! I don't have any experience with that. My guide was missing and when I did my engine rebuild it wasn't in the oil pan either. I personally would replace the timing chain with the new guide and not worry about that. The chances of it sucking to the oil pump screen would be very slim. Have you had the cover off yet?

@@ForceBuilt Yep, took the cover off and found broken pieces still stuck under the metal "clips"....(I believe you referred to them as ears), the spring was loose just sitting there (it didnt fall into the pan) and one other broken piece I didn't notice that fell into the pan when I touched the chain . That piece fell into the pan near the opening and I was able to blindly find it with my fingers and pulled it out. I'm just wondering if there are any other pieces in the pan. You're probably right....slim chances of it sucking up but do you think I should be concerned with smaller pieces potentially being in the pan?

I really don't think you have anything to worry about. But that is just me, doesn't mean I am right. I think the risk is very low. If it was starving for oil, your oil pressure will tell you.

@@ForceBuilt One more question regarding the timing marks. When I rotate the gears, I can get the marks almost lined up but when I apply pressure when turning to get them 100% accurate, they don't stay lined up after I back off the pressure from turning (they go back to "almost" lined up. I'm not sure if this is common or if I'm close enough. If I do another full rotation, would that change anything or would I end up with the same "almost" mark position? If you don't mind I thought about emailing you (to the email address below) a picture of my "almost" marks to see what you think.

@@coreyhall5898 sorry for the delay. I've been mowing the grass. One more rotation will not matter. The compression is what is pushing you back. You can remove spark plugs to keep that from happening. Hope this helps!

It will be more noticeable at idle. If it is a lower pitch sound it could be something else. Mine actually had a broken piston skirt. I have a video showing how bad it got when it finally went completely out. It is the first video in my engine rebuild playlist. Thanks for stopping by!

@@ForceBuilt sorry one more question. If it was a piston skirt would it only be at idle or would it increase with rpm?

​@@reedcarpenter2994It can be either way sadly. Before mine broke off, the more rpm the less I heard. After it failed, the more RPM the faster it made the sound. If it isn't bad, it can even stop when warmed up. Mine never stopped. A timing chain and also make it sound like a diesel. I have had that to happen before. Your questions are welcome.

@@ForceBuilt would a compression check help diagnose a piston skirt

@@reedcarpenter2994 No it wouldn't. I will send a link here of what mine sounded like when it failed. If it isn't super annoying for you, they will run a long time like that. That may not be what is wrong either. I am just telling you things it could be.

You are correct. The bigger 4.0 doesn't have that piece. I think it should also. Thanks for commenting!

Sorry, I do not.

Ha Ha! If you look at some of my future videos, I do an engine rebuild. That is exactly what is going on lol. Good ear there! Check it out here if you like. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ctWhFx-orRM.html

Thanks Brian! Yes, I updated the info in the description of this video. The links are there now. Good luck

Yes, Broken piston skirt. I did a full rebuild in a different video on my channel. Thanks for watching!

Very easy to do. With the timing cover removed, the 2 gears have dots stamped into the edge of each of them. At the closest point between the gears, rotate the crankshaft until the 2 dots point directly at each other(at the closest point between both gears). Now remove the 2 gears and chain. Replace with new gears and chain, making sure the dots are in the exact same spots as they were before you removed the first set of gears. Hope this helps!

@@ForceBuilt thank you very much

I don't know what to tell you about that. The 4.0 and 2.5 engines are non-interference though. I took my timing chain off and rotated the engine around multiple times getting the dots to line up on the gears for correct timing. No interference on mine. Read post #4 from Jerry Bransford www.jeepforum.com/threads/will-timing-chain-break-bend-valves.516496/

futuraforce@gmail.com

@@ForceBuilt I sent you a email!!

@@jamesrobert4985 You have mail.

Here is the video that taught me how. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-u00V3gmQ_uM.html

@@ForceBuilt thank you

It isn't hard to change at all. Go for it!

That's strange. I wonder why? Is it quiet?

Oh no. I'm not sure how to handle that. Heat will break loose loctite but I would not want to get that area too hot. Good luck!

@@ForceBuilt thank you for your help I will let everyone know to try some heat and hopefully they will get it loose

I actually did that. I ended up doing an engine rebuild. It was a broken piston skirt making the noise. Thanks for watching!