VVT Hub

marcus · Post by **marcus** » 03 Feb 2018, 07:05

Hello,

I have oil leak on a right side of the engine. Hard to tell where.

I have just taken out the plug from the VVT wheel and found out there is a lot of oil. Is it normal that there is oil or it is indicating that the hub is leaking?

Post by **oragex** » 03 Feb 2018, 07:59

Oil at the cam gears may meant damaged seal from clogged PCV box

How many miles on it? Have you owned it for long time?

Post by **abscate** » 03 Feb 2018, 10:20

Lots of oil Inside a CVVT hub, it’s oil pressure that moves the hub relative to cam

Post by **jonesg** » 03 Feb 2018, 10:55

marcus wrote: ↑03 Feb 2018, 07:05 Hello,

I have oil leak on a right side of the engine. Hard to tell where.

I have just taken out the plug from the VVT wheel and found out there is a lot of oil. Is it normal that there is oil or it is indicating that the hub is leaking?

The cam seals can leak if crankcase has pos pressure instead of vac. Do the glove test over the oil fill csp, see youtube vids if you dont know how.
If it has good vac then it's likely the cvvt hub is leaking.

To delve further I think you need the camshaft locking tool. I only watched part of this video. It gives a general idea.

Post by **SuperHerman** » 04 Feb 2018, 11:10

Oil there is totally normal. If I recall the shop manual even says to get a rag ready.

How many miles? Your cam seal may be tired and due for a replacement. May want to do all four while you are at it.

marcus · Post by **marcus** » 05 Feb 2018, 01:53

370k miles. I own it since 2005. So It is oryginal equipment most likly.

marcus · Post by **marcus** » 05 Feb 2018, 01:59

I was doing the cylinder head gasket recently. I found that on the exhaust shaft there was no seal on the other side to timing belt. Is it normal? The car was only once before at the shope for work realated to the head when the bolts on the VVT went loose. During the cylinder head assembly I installed the seal. Was I correct?

Post by **jonesg** » 05 Feb 2018, 21:06

marcus wrote: ↑05 Feb 2018, 01:59 I was doing the cylinder head gasket recently. I found that on the exhaust shaft there was no seal on the other side to timing belt. Is it normal? The car was only once before at the shope for work realated to the head when the bolts on the VVT went loose. During the cylinder head assembly I installed the seal. Was I correct?

Some of them don't use cam seals, don't know which yrs but if you didn't have a problem with no seal I'd keep it that way.

marcus · Post by **marcus** » 06 Feb 2018, 01:02

jonesg wrote: ↑05 Feb 2018, 21:06
marcus wrote: ↑05 Feb 2018, 01:59 I was doing the cylinder head gasket recently. I found that on the exhaust shaft there was no seal on the other side to timing belt. Is it normal? The car was only once before at the shope for work realated to the head when the bolts on the VVT went loose. During the cylinder head assembly I installed the seal. Was I correct?
Some of them don't use cam seals, don't know which yrs but if you didn't have a problem with no seal I'd keep it that way.

It could be my case. The head had rubbered cup which actually had some leak. But the head has drains in the casing the same way as by the other seals. I do not think he seal will create problem.

marcus · Post by **marcus** » 06 Feb 2018, 01:06

jonesg wrote: ↑03 Feb 2018, 10:55
marcus wrote: ↑03 Feb 2018, 07:05 Hello,

I have oil leak on a right side of the engine. Hard to tell where.

I have just taken out the plug from the VVT wheel and found out there is a lot of oil. Is it normal that there is oil or it is indicating that the hub is leaking?
The cam seals can leak if crankcase has pos pressure instead of vac. Do the glove test over the oil fill csp, see youtube vids if you dont know how.
If it has good vac then it's likely the cvvt hub is leaking.

To delve further I think you need the camshaft locking tool. I only watched part of this video. It gives a general idea.

I did the glove test and it was ok. I think that the VVT is leaking.