problem with VVT...

[Serginio]

Hi all

I have an S14 with a blacktop SR20DET in it, there is a problem with the VTC system, the solenoid is good, i checked it on another car, but when i give him direct power, you can hear it clicking, but the rpm won't move even a bit instead of lowering it...what could be the problem?

i don know what to do please help me

im sorry if my english no so good

Thaks all

Serg. Israel, Tel Aviv
Modified by Serginio at 1:43 AM 5/9/2005

[NISTECH]

its possible the passeges are plugged up. or the VTC sprocket itself is leaking. not allowing pressure to build in it. Does the sproket rattle at idle?

[s13sr20chris]

o good engine flush seems to be benificial on most of the newer vtc sprockets.

[Audi180]

the engine is silent, no rattling or any unusuall noises, is there a way of fixing that aproket, or should he replace it to a new one?

[s13sr20chris]

cant say im sure as i have never worked on that particular engine(s14sr20). have you tried pulling the valve cover and see if its sludgy?

[Audi180]

yeah we checked for the oil passages and they seem to be clear... can the pulley be dead or something?

[NISTECH]

If you have compressed air available and an air chuck with a rubber tip you can test the VTC by blowing air into the solonoid passage see if it turns. This is usually easier with the chain off but you can usually see some movement if you watch it carfully. It will take up any slack in the chain when you do it. If it does this chances are the sprocket and oil gallies to it are ok, that leaves you with the solonoid itself.

[Audi180]

we've checked the solenoid, and tried to replace it with mine (who work's on my car...), and it didn't work.. so that's leave us with the sproket right?