1FZ Oil Pressure? Cam chain Noisey on Idle

[ozfjz80]

Hi Guys
I am at my whits end here trying to figure this out. Have searched numerous threads with no word of this.

Trying to keep this short. Sounds like cam chain is going off its head slapping around at idle and up to around 1000~1100rpm. This ONLY happens when the vehicle is at full running temp (Not coolant temp, I mean when the oil and all metal components are at temp after around 10-15mins of driving) Factory oil gauge reads well and increases as it should with revs.

Coincidence or not this started suddenly right after an oil/filter change
K&N HP-3001 20/50w oil, have run both forever at 3000mi intervals.

Changed oil and filter straight away, Have shimmed both the relief valve springs with no change. Too scared to take out the tensioner incase something falls into the timing cover, will it come out or does it have some sort of clip to the slider?

Please help I can't handle driving around with the idle set at 1200rpm anymore! and I am going to buy a mechanical pressure guage today.

 

[Clint79]

Are you sure its the cam chain and not the tention cog on the cam its self
https://forum.ih8mud.com/80-series-tech/285918-piston-slap-timing-chain-noise.html

 

[landtank]

the fact that it's a 92 and an 1FZ-FE is kind of throwing me a little. But the early 1FZ-FEs here in the states (93-94) had a problem with the chain tensioner where Toyota redesigned it. They would fail and cause symptoms as you state.

Not the nicest job to do either

 

[ozfjz80]

Thanks for your advice guys, I had ruled out the slider plastic being cracked only due to the noise not being there for the first 10-15 min of driving. However I was not aware of the cam gear issue. I guess I will have to pull off the cam cover and have a look. Not that i think I will see much. Maybe due to the engine being at 430k my best option may be a low klm motor from a wrecker. Either way it sounds to be a 30+ hour job.

Any other advice is greatly appreciated.