PoopJeep
NAXJA Forum User
- Location
- Burt Reynolds Mustache
1999 Cherokee Sport Auto, 145,xxx miles, Oil changed regularly, 3" R.C. lift
I know there are many threads regarding flex plate & lifters knocking. Today at about 7 am i started my 1999 Cherokee Sport, backed out the driveway and put it into drive. About 20 yards down my road i start getting a sweet knocking. I has lightly knocked before so i figured possible dry start + the fact i havent driven it in a day ish. Further down the road it became more pronounced. I stopped double checked my oil and i was okay and put in some lucas (i know its frowned upon but its all i had) and still the knocking continued. All the way to work which is about 50 miles so idk what kinda damage i have done already but ill now describe the knocking.
I have audio but it was from my cell phone so obviously its not HQ but i also do not know how to add audio for you to hear. The knocking sounds basically like the slight knocking i had before but more pronounced. It was hard to tell where exactly it was coming from because it tends to echo in the engine bay. It sounded as if it was coming from my valve train because it seems to be 2x as fast as idle. The metal tapping would increase with engine RPM and speed. If i let off the gas for a split second it would be silent and then as idle came around it would tick with idle.
On my lunch break i took it to autozone because a friend with a jeep works there. He grabbed a stethoscope off the shelf and took a look/hear. He went through cyl by cyl until he reached the back of the engine. He said most likely a lifter has colapsed or bent valve etc etc. He and I talked about draining the oil and running about a gallon of diesel in the motor for 10-15 min to see if it would release a possibly stuck lifter so i did it. I then drained it out (hot as h*ll by the way) and then refilled with GTX high mileage with a K&N filter. No luck. On a side note i did mistakenly put on a fram oil filter roughly 2k miles ago when i did my oil maybe i did my self in idk.
My brother towed me home from work because i was afraid to do any more damage that i may have already done (he has a ford so that was depressing enough for me.) After putting my second car on the road that i hated doing (summer car thus the jeep for winter) i pulled the jeep in the garage and took off the valve cover. There was no scoring on the valve cover or any of the rocker arms. The bolts i will say were "loose" on the end cylinder (the back back one). I removed the rocker arms and checked for unusual scoring or anything and nada. The push rod from the last last (furthest one in the engine) rocker arm seemed out of place so i re-seated it. After checking everything i bolted the rockers back down to 10-Nm and the furthest rocker arm seemed to depress more compaired to the others. Again i have pictures but they dont really show much but ill add them anyways. I was hoping i worked wonders but after starting the jeep it played a nice little snare drum solo.
I have not checked the flex plate thing yet nor do i know exactly how (write up or pictures would be sweet) but if that might be my next step so be it. The only reason i went with the valve train first (and it still might be the issue) is because between the stethoscope and what i hear about flex plates making noise primarily at idle i assumed i was logical. Although when i crawl under the jeep it sounds almost identical. If anyone can help point me in the right direction i would appreciate your help greatly.
Cant post pics because i forgot my photobucket password & it locked me out it just gets better and better but i will admit to me the photos looked useless
http://www.youtube.com/watch?v=-vIg3OFL19A&feature=related
this video i found on you tube is IDENTICAL! to my noise...
anyone?
anyone?
I know there are many threads regarding flex plate & lifters knocking. Today at about 7 am i started my 1999 Cherokee Sport, backed out the driveway and put it into drive. About 20 yards down my road i start getting a sweet knocking. I has lightly knocked before so i figured possible dry start + the fact i havent driven it in a day ish. Further down the road it became more pronounced. I stopped double checked my oil and i was okay and put in some lucas (i know its frowned upon but its all i had) and still the knocking continued. All the way to work which is about 50 miles so idk what kinda damage i have done already but ill now describe the knocking.
I have audio but it was from my cell phone so obviously its not HQ but i also do not know how to add audio for you to hear. The knocking sounds basically like the slight knocking i had before but more pronounced. It was hard to tell where exactly it was coming from because it tends to echo in the engine bay. It sounded as if it was coming from my valve train because it seems to be 2x as fast as idle. The metal tapping would increase with engine RPM and speed. If i let off the gas for a split second it would be silent and then as idle came around it would tick with idle.
On my lunch break i took it to autozone because a friend with a jeep works there. He grabbed a stethoscope off the shelf and took a look/hear. He went through cyl by cyl until he reached the back of the engine. He said most likely a lifter has colapsed or bent valve etc etc. He and I talked about draining the oil and running about a gallon of diesel in the motor for 10-15 min to see if it would release a possibly stuck lifter so i did it. I then drained it out (hot as h*ll by the way) and then refilled with GTX high mileage with a K&N filter. No luck. On a side note i did mistakenly put on a fram oil filter roughly 2k miles ago when i did my oil maybe i did my self in idk.
My brother towed me home from work because i was afraid to do any more damage that i may have already done (he has a ford so that was depressing enough for me.) After putting my second car on the road that i hated doing (summer car thus the jeep for winter) i pulled the jeep in the garage and took off the valve cover. There was no scoring on the valve cover or any of the rocker arms. The bolts i will say were "loose" on the end cylinder (the back back one). I removed the rocker arms and checked for unusual scoring or anything and nada. The push rod from the last last (furthest one in the engine) rocker arm seemed out of place so i re-seated it. After checking everything i bolted the rockers back down to 10-Nm and the furthest rocker arm seemed to depress more compaired to the others. Again i have pictures but they dont really show much but ill add them anyways. I was hoping i worked wonders but after starting the jeep it played a nice little snare drum solo.
I have not checked the flex plate thing yet nor do i know exactly how (write up or pictures would be sweet) but if that might be my next step so be it. The only reason i went with the valve train first (and it still might be the issue) is because between the stethoscope and what i hear about flex plates making noise primarily at idle i assumed i was logical. Although when i crawl under the jeep it sounds almost identical. If anyone can help point me in the right direction i would appreciate your help greatly.
Cant post pics because i forgot my photobucket password & it locked me out it just gets better and better but i will admit to me the photos looked useless
http://www.youtube.com/watch?v=-vIg3OFL19A&feature=related
this video i found on you tube is IDENTICAL! to my noise...
anyone?
anyone?