hello all,
I have a 1998 tj 2.5l with 120k on it. It has a a quiet tick like most jeeps, I did a scheduled oil change and around 200 miles later the tick turned to a LOUD CLANK that is constant even at oper temp. The jeep runs great, not ruff at idle no loss of power ( other than being a 2.5l with 33's but the 4.88 gears help). I was thinking a lifter got stuck, did an oil change again (heaver weight oil witht he lucas treatment), still the same. I pulled a cylinder wire while running to see if I could isolate which cylinder it was coming from, and the noise stayed the same. I pulled the valve cover thinking a rocker arm/ rod and have been the issue . I started the motor with valve cover off put a finger on each spring to see if I could feel a slap/knock and nothing they all felt the same, all Rocker/rods were ok and all oiled well...............
I put a pipe on the header and the valve cover to listen and it sounds like the clank is deeper in the motor than i the head.....
Anyone have any more checks I should do.
also what about a cracked flywheel??
thanks
I have a 1998 tj 2.5l with 120k on it. It has a a quiet tick like most jeeps, I did a scheduled oil change and around 200 miles later the tick turned to a LOUD CLANK that is constant even at oper temp. The jeep runs great, not ruff at idle no loss of power ( other than being a 2.5l with 33's but the 4.88 gears help). I was thinking a lifter got stuck, did an oil change again (heaver weight oil witht he lucas treatment), still the same. I pulled a cylinder wire while running to see if I could isolate which cylinder it was coming from, and the noise stayed the same. I pulled the valve cover thinking a rocker arm/ rod and have been the issue . I started the motor with valve cover off put a finger on each spring to see if I could feel a slap/knock and nothing they all felt the same, all Rocker/rods were ok and all oiled well...............
I put a pipe on the header and the valve cover to listen and it sounds like the clank is deeper in the motor than i the head.....
Anyone have any more checks I should do.
also what about a cracked flywheel??
thanks