Engine Video - Dephaser/Cam Rattle?!

[f0xy]

Got an odd noise coming from the cam pulley end of the engine, wierd rattle when it gets to 1700-2000rpm. You can hear it rattle twice every time its revved....

[YOUTUBE]OpdEFOiCo6Q[/YOUTUBE]

Dephaser or solenoid maybe?

 

[jack_davey]

does sound very rattly, hard to tell from the video though due to the poor sound quality

 

[f0xy]

no idea why its crap quality, sony HD camera, lol

anyway, its just like two rattles dead close together, like its doing 'rattle'-'on'-'rattle'-'off'....hard to explain...

dont know weather its something wrong or what though!

 

[Inferno]

Dephaser sounds like this...

http://s35.photobucket.com/albums/d187/Inferno182/?action=view&current=MOV00004-1.flv

 

[matty172cup]

sounds more whiney to me very odd whats the dephaser???

Matty

 

[ScottyD]

Dephaser normally only "rattles" when the car is started from cold. Never really does it when being revved :S

 

[f0xy]

i see. Cheers for the video drrollo, thats confirmed it cant be that...

Its sort of like something 'activating/deactivating' as you rev it past ~1500-1700rpm, which led me to believe the it was the dephaser (as the solenoid kicks in and out around that RPM range)...

Matty, its the inlet pulley, it has a solenoid on the top of the cam cover that changes the pulley position on the cam to alter the timing as you pass ~1500rpm.

 

[matty172cup]

ahhh i see now cheers foxy sorry i cant be any help with the weird noise

Matty

 

[cliosportap]

%100 dephaser pulley
change it and say goodbye to that diesel sound
also take of the selonoid and clean it up

 

[Jay Payne]

Try disconnecting the solenoid and run it. It wont activate then, might help narrow it down