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Yes, loose converter bolts sound a lot like a failed rod bearing.
Sounds like a piston hitting the cylinder head. A lifter will usually tick, but a piston will sound more like this knocking noise.
i don't know if it helps, but my '99 legacy outback was making a knocking sound. turned out that the oring on the brake caliper pin had worn out, and the pin was kind of knocking around.
Valve train
Sounds like your lifters are bad and might need ajusted or changed, it could be your cam not looping.
does it sound more like a knocking sound from the engine at idle?
bits of the catacomb that makes up your coverter have fallin losse. if it sound like there is dirt in it that that's the case. The catalytic converter needs replaced.
it is the catalyic converter. That is what happened to mine
sounds like you ac compressor is about to crap out.
When you accelerate. you are putting presure on the main engine barrens. if they are going bad. You will hear this knocking sound. I don't know how many miles you have on this engine. But that's what it sounds like. But that's not all that can make this sound. You will have to tell more about it and when it started. Did it just start all at once? or did it start and then get louder?
it sounds like a bad throw out bearing or clutch plate. not a major deal it just starts to get louder but eventually you going to have to replace it when you do your next clutch job. chris
It could.It could.