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Discussion Starter · #1 ·
Hi all,

I have a 2004 140 hp celica with horrendous chain noise until warmed up. It then idled perfectly.

I have removed cam cover and ocv to discover some grinding on ocv from chain. Ocv filter was clean and ocv seems to be moving freely.
The chain does not seem to be slack, it has a bit of movement but seems tensioned. Could this still be the issue?

It seems as if there is minimal oil pressure in vvt system while warming up but i have minimal knowledge of vvt.
I have no experience with the vvt engines, german cars have usually been my background.

Any one else experienced this and can give some advice?
Thanks
 

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Discussion Starter · #2 ·
Just to add the Ocv moves freely with 12 volts directly to it.
Car has been sat for 4 months prior to this with various faults, the timing chain issue not being one of them.
Are there any parts such as timing chain tensioner that could not be fully engaging until warm?
Oil was recently changed to 5w 30 before parking up, could this cause an oil pressure when cold issue?
 
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