Need Help! Loud Knocking Front End - Video Included.

[Nate420]

My VP V6 has developed a really loud knocking sound. The Knocking sound gets faster when the RPM is increased.
The sound is coming from the front end of the motor.

https://drive.google.com/file/d/16qC3yRi9UNNRPBaPVwY2I9apFU1c2QE-/view?usp=sharing

There are no other symptoms, the car runs great still just sounds really bad

Any help would be appreciated, thanks.

 

[Trevor loves holden.]

Remove the belt and start the car if noise goes away then test your bearing and water pump, spin them by hand.

 

[Nate420]

Remove the belt and start the car if noise goes away then test your bearing and water pump, spin them by hand.

Hi. Thank you for reply.

I'm starting to suspect water pump as it looks like a slow leak out front of that location for a long time, and my coolant reservoir tank would always go dry even after filling it up. although i never had any cooling issues.

Ill test that and report back.

 

[VPRob]

I couldn't get your video to play but have a good look at your harmonic balancer. If the rubber insulator section of that has failed it makes a hell of a knock

 

[MikeC]

You've had a look for intake and exhaust leaks? I don't think it's bearings or the water pump as it goes away when you rev the engine.

 

[Trevor loves holden.]

I couldn't get your video to play but have a good look at your harmonic balancer. If the rubber insulator section of that has failed it makes a hell of a knock

Video wasn't really a good one anyway wasn't longer enough and didn't move the phone closer enough, if the op got in there and moved it around it might of pin pointed the sound better.

You've had a look for intake and exhaust leaks? I don't think it's bearings or the water pump as it goes away when you rev the engine.

Noise doesn't go away, its a hollow tap / knock like water pump.

 

[Nate420]

I couldn't get your video to play but have a good look at your harmonic balancer. If the rubber insulator section of that has failed it makes a hell of a knock

Cannot see any visible damage on the harmonic balancer.

You've had a look for intake and exhaust leaks? I don't think it's bearings or the water pump as it goes away when you rev the engine.

Ill check it out mate but exhaust system isn't that old got it don't about 2 years ago.

Video wasn't really a good one anyway wasn't longer enough and didn't move the phone closer enough, if the op got in there and moved it around it might of pin pointed the sound better.

My apologies. I wasn't planning to upload that vid was just to show how it sounded to a friend. I'll get some proper footage for you all when i replace the water pump on the weekend.

 

[Trevor loves holden.]

Cannot see any visible damage on the harmonic balancer.



Ill check it out mate but exhaust system isn't that old got it don't about 2 years ago.



My apologies. I wasn't planning to upload that vid was just to show how it sounded to a friend. I'll get some proper footage for you all when i replace the water pump on the weekend.

It might not be the water pump but if its leaking I be doing it anyway.

 

[Nate420]

It might not be the water pump but if its leaking I be doing it anyway.

Hey mate. i removed the belt today and the sound went away completely. however, i forgot to do the spin test.
Still waiting for the Water Pump to be delivered.

 

[Trevor loves holden.]

Well that's good news you now no its not internal, sounds like the pump mine did that, the noise will be the fins on the pump hitting the wall in the housing, its only a guess it called be the alternator or even the bearing on the A/C. compressor pulley.