Kalal92 Posted December 4, 2018 Share Posted December 4, 2018 Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
yxmj Posted December 4, 2018 Share Posted December 4, 2018 Is it an auto trans? Link to comment Share on other sites More sharing options...
Kalal92 Posted December 4, 2018 Author Share Posted December 4, 2018 ManualSent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
yxmj Posted December 4, 2018 Share Posted December 4, 2018 Does the sound change when you step on the clutch? Link to comment Share on other sites More sharing options...
Kalal92 Posted December 4, 2018 Author Share Posted December 4, 2018 Does the sound change when you step on the clutch? NoSent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
yxmj Posted December 4, 2018 Share Posted December 4, 2018 Do you have access to a mechanics stethoscope? Link to comment Share on other sites More sharing options...
Kalal92 Posted December 4, 2018 Author Share Posted December 4, 2018 Do you have access to a mechanics stethoscope? I do not. Long story sure local mechanic said piston pin and Engine will need to be rebuilt or replaced I do have it in, I need to pick up and pay for it if not then they ship it back just wondering if this is less major and don’t need the engine replacement. Pretty much looking for another opinionSent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
yxmj Posted December 4, 2018 Share Posted December 4, 2018 Yes....that is were I am going.....if you had a stethoscope you could pinpoint the exact origin of the noise....no guessing involved. IMHO....if it were a piston you would hear it when the motor was cool cool and all through the rev..... My money is on 1) Ring Gear/Flywheel 2) Harmonic balancer Link to comment Share on other sites More sharing options...
mjeff87 Posted December 4, 2018 Share Posted December 4, 2018 Doubtful it's a wrist pin, but you can check quick and dirty like to see. With the engine running and knocking, pull a plug wire off of each plug one at a time and see if the sound diminishes or goes away. If it does, it indicates a worn wrist pin. My 2.5 developed a clickity-clack sound when warmed up. Not quite as deep sounding as yours, but it ended up being a worn out timing chain tensioner that allowed the chain to start slapping the inside of the timing cover. Pull your distributor cap and watch the rotor tip as you carefully rotate the engine via a breaker bar/socket on the harmonic balancer bolt. If you get more than about 10 degrees of movement on the crank without the rotor moving, I'd say you have a worn out timing chain and/or tensioner. How many miles are on the engine? Link to comment Share on other sites More sharing options...
Kalal92 Posted December 4, 2018 Author Share Posted December 4, 2018 Doubtful it's a wrist pin, but you can check quick and dirty like to see. With the engine running and knocking, pull a plug wire off of each plug one at a time and see if the sound diminishes or goes away. If it does, it indicates a worn wrist pin. My 2.5 developed a clickity-clack sound when warmed up. Not quite as deep sounding as yours, but it ended up being a worn out timing chain tensioner that allowed the chain to start slapping the inside of the timing cover. Pull your distributor cap and watch the rotor tip as you carefully rotate the engine via a breaker bar/socket on the harmonic balancer bolt. If you get more than about 10 degrees of movement on the crank without the rotor moving, I'd say you have a worn out timing chain and/or tensioner. How many miles are on the engine? 60 K on the engine. Before I started tearing it apart I pulled the spark plugs while running didn’t change any sound or knockSent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
sinkrun Posted December 4, 2018 Share Posted December 4, 2018 Sounds like busted piston skirt to me and I have done A few however they sounded that way cold also. Not sure how hard it is to pull the pan on 2.5 but that would tell you if you find a piece of skirt. Listen to some busted skirt videos on you tube see what you think. I have done them with the engine in that was 4.0 never worked on 2.5. Link to comment Share on other sites More sharing options...
mjeff87 Posted December 4, 2018 Share Posted December 4, 2018 At 60K I doubt it's a timing chain issue. Shorting each cylinder like you did sort of proved its not a wrist pin or rod bearing issue, most likely. Drop the pan like sinkrun suggests, what you might find will probably point you in the right direction. Do you have dummy gauges in your cluster, or full gauges? If gauge, what's your oil pressure look like? Link to comment Share on other sites More sharing options...
Kalal92 Posted December 4, 2018 Author Share Posted December 4, 2018 At 60K I doubt it's a timing chain issue. Shorting each cylinder like you did sort of proved its not a wrist pin or rod bearing issue, most likely. Drop the pan like sinkrun suggests, what you might find will probably point you in the right direction. Do you have dummy gauges in your cluster, or full gauges? If gauge, what's your oil pressure look like? Light gauges if my oil pressure was to drop you think the light would come on ( light works on start up)Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Jeep Driver Posted December 5, 2018 Share Posted December 5, 2018 Sounds like a collapsed lifter to me. Link to comment Share on other sites More sharing options...
Kalal92 Posted December 5, 2018 Author Share Posted December 5, 2018 Sounds like a collapsed lifter to me. Can you replace the lifters without removing the head?Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Wounded_Fighter Posted December 5, 2018 Share Posted December 5, 2018 I have the direct opposite of the sound in video currently, Cold start has the smacking, and at operating temps, Not a peep. Still haven't found the source of it but I'm still hunting... Link to comment Share on other sites More sharing options...
Kalal92 Posted December 5, 2018 Author Share Posted December 5, 2018 Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
mjeff87 Posted December 5, 2018 Share Posted December 5, 2018 ummmm.....yeah. That would do it. You can pull the lifter(s) out without pulling the head. Just make sure you use the type of lifter puller with the little "ears" on the end of the rod that lock into the top of the lifter versus a magnetic type. They are a very tight squeeze to pull up through the head, so much so that you have to use the tool to physically pull them. Use the same tool to reinstall to make sure the lifter drops back into it's bore, otherwise they will fall over and roll around inside the lifter valley. It's a beoitch to get them picked back up and positioned correctly when they do that. Ask me how I know...... Link to comment Share on other sites More sharing options...
Wounded_Fighter Posted December 5, 2018 Share Posted December 5, 2018 3 minutes ago, mjeff87 said: Ask me how I know...... How do you know? Link to comment Share on other sites More sharing options...
Kalal92 Posted December 5, 2018 Author Share Posted December 5, 2018 Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Eagle Posted December 6, 2018 Share Posted December 6, 2018 On 12/4/2018 at 5:56 PM, sinkrun said: Sounds like busted piston skirt to me and I have done A few however they sounded that way cold also. Not sure how hard it is to pull the pan on 2.5 but that would tell you if you find a piece of skirt. Listen to some busted skirt videos on you tube see what you think. I have done them with the engine in that was 4.0 never worked on 2.5. A friend across town just went through this with his 2.5L Wrangler. Number 3 piston self-destructed. Link to comment Share on other sites More sharing options...
sinkrun Posted December 7, 2018 Share Posted December 7, 2018 So what was the issue piston, lifter or other?? Link to comment Share on other sites More sharing options...
Kalal92 Posted December 7, 2018 Author Share Posted December 7, 2018 So what was the issue piston, lifter or other?? Don’t know! Pulling the block tomorrow Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Kalal92 Posted December 8, 2018 Author Share Posted December 8, 2018 That should get rid of the knockSent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Kalal92 Posted December 8, 2018 Author Share Posted December 8, 2018 Tired of dealing with it so I spent the extra moneySent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
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