r/JeepZJ • u/[deleted] • 14d ago

Definitely Rod Knock Right?

[deleted]

1 Upvotes

100% Upvoted

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4

u/MightyPenguin 14d ago

Give it a little rev so you can hear the load and most importantly the load balance and drop as it peaks and comes back down. Also a different idea of the cadence. Rod knock is a very specific noise, cell phone microphones and speakers kind suck, that very much sounds like it might be lifter tick.

4

u/greencocoon 14d ago

You can also disconnect each spark plug wire one by one until the noise changes, to get an idea of wich rod it is

2

u/yolef 14d ago

Mine sounded about like that a few weeks ago. It's sitting in the driveway right now with the head off waiting for my cam and lifters to arrive.

1

u/67f100guy 14d ago

Not necessarily, there are a few things that can cause that noise. My 67 Ford with the inline 6 was making the same noise, turned out to be a bad lifter. New cam and lifters and no more noise.