Hey Mud,
SO I've had this sound on my 94 FZJ80 since I picked the thing up 6 months or so ago. When I got the car, it had a misfire and a few other random creaks, and initially it sounded to me like a loose exhaust shield or something similar that could be sorted out as the car was brought back to life. The misfire ended up being a bad injector lead, but after that the car ran perfect - idles fine and I do not feel any loss of power compared to my other 1FZ 80 that runs well.
It makes the sound under these conditions:
Sound comes on around 3k and continues as revs increase
Can sometimes here it slightly when coasting around 2,2-2,300
Can replicate the sound standing still only once engine is warm (video), otherwise it will do it under load around 3k
Originally I thought it was one of my cats starting to break down, but when taking this video the sound gets quieter moving away from the motor even towards the cats
Car has 170k, and doesn't leak anything that might be alarming. There was no metal in the oil with the last oil change, and there really is no noticeable weirdness to how it runs or drives other than that it's making this horrible noise. The funny thing is, my buddy has a 94 with 330k and it makes the exact same sound, but all else the same - runs/drives great too. I read in a couple of Mud threads that people described somewhat similar noises, and it lead them to the power steering pump gear, harmonic balancer wear, engines being out of time, and things like exhaust leaks. But the scenarios seemed to be different.
It's with a reputable LC shop in LA that tells me they think (without having properly diagnosed yet) that it's a broken bearing or something that has come loose in the crank case. But the repeatable conditions and the lack of metal in the oil tells me that miiiight not be the case. I've made the recommendations I said in the last paragraph but their next next thing is a 15 hr diag to pull the valve cover and oil pan and check everything.
SOOO all of that said - has anyone experienced a noise like this under these conditions or can point me in the direction of 1FZ-FE wear points that may cause something like this?
Also - this is my first real tech post here, so my apologies if it's in the wrong place.
Video - 94 FZJ80 Knocking/Ticking Sound
SO I've had this sound on my 94 FZJ80 since I picked the thing up 6 months or so ago. When I got the car, it had a misfire and a few other random creaks, and initially it sounded to me like a loose exhaust shield or something similar that could be sorted out as the car was brought back to life. The misfire ended up being a bad injector lead, but after that the car ran perfect - idles fine and I do not feel any loss of power compared to my other 1FZ 80 that runs well.
It makes the sound under these conditions:
Sound comes on around 3k and continues as revs increase
Can sometimes here it slightly when coasting around 2,2-2,300
Can replicate the sound standing still only once engine is warm (video), otherwise it will do it under load around 3k
Originally I thought it was one of my cats starting to break down, but when taking this video the sound gets quieter moving away from the motor even towards the cats
Car has 170k, and doesn't leak anything that might be alarming. There was no metal in the oil with the last oil change, and there really is no noticeable weirdness to how it runs or drives other than that it's making this horrible noise. The funny thing is, my buddy has a 94 with 330k and it makes the exact same sound, but all else the same - runs/drives great too. I read in a couple of Mud threads that people described somewhat similar noises, and it lead them to the power steering pump gear, harmonic balancer wear, engines being out of time, and things like exhaust leaks. But the scenarios seemed to be different.
It's with a reputable LC shop in LA that tells me they think (without having properly diagnosed yet) that it's a broken bearing or something that has come loose in the crank case. But the repeatable conditions and the lack of metal in the oil tells me that miiiight not be the case. I've made the recommendations I said in the last paragraph but their next next thing is a 15 hr diag to pull the valve cover and oil pan and check everything.
SOOO all of that said - has anyone experienced a noise like this under these conditions or can point me in the direction of 1FZ-FE wear points that may cause something like this?
Also - this is my first real tech post here, so my apologies if it's in the wrong place.
Video - 94 FZJ80 Knocking/Ticking Sound