Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[SMD]

Chrisgixer, I thought I was the only one to have oil sitting on the top of the sump pan. My CC gaskets has never leaked but were changed and sump has been resealed so where does this oil come from? I also get a faint whiff of oil when I'm out of the car or have the window open when stationary

[amba]

Remeber its an Omega built by Vauxhall and they are incontinent when it comes to holding any forms of fluid..oil/coolant etc

[Marks DTM Calib]

Got the same happening on mine . No apparent leaks and only oily smell when pulling up after running 

I've yet to see a v engine with no oil leak, of some kind or other. So your not looking/trying hard enough.

Obviously if your smelling oil, then it's getting hot, so exhaust is a good place to start.

Should have seen my facelift then, dry as a bone when sold and always was

[chrisgixer]

Chrisgixer, I thought I was the only one to have oil sitting on the top of the sump pan. My CC gaskets has never leaked but were changed and sump has been resealed so where does this oil come from? I also get a faint whiff of oil when I'm out of the car or have the window open when stationary

Where to start... There's an exploded view of the crank cases in the web but I'm buggered if I can find it.
There's two sump seals, the steal sump has a sensor in at the base screws to an alloy casting, this casting can leak on its seal to the block and the subframe fouls removal. Then there's the various apertures in the block itself, oil pump as mentioned earlier, dip stick tube seal, oil pressure switch, front crank seal.
Then at the top there's the cam seals and obviously the cam cover seals.

All of these can leak down, it all ends up on top of the sump. Very difficult to spot due to surrounding parts, cam belt covers, auxiliary parts, exhaust heat shields etc.

Rear crank seal leaks into the bell housing. Only seen one of these though, and it had had gear box work prior to, which coincided with the start of the leak.

[Andy B]

.....
Rear crank seal leaks into the bell housing. Only seen one of these though, and it had had gear box work prior to, which coincided with the start of the leak.

Mine leaked from the rear crank seal ..... no work on either engine or gearbox. 

I chickened out & paid someone else to fit the GM supplied seal (£30-odd IIRC  ) but later had to fit down pipe to manifold exhaust seals instead of the exhaust paste they'd used and clip the lambda sensor wires to the gearbox rather than let them flap about in the breeze. 

[omega3000]

Chrisgixer, I thought I was the only one to have oil sitting on the top of the sump pan. My CC gaskets has never leaked but were changed and sump has been resealed so where does this oil come from? I also get a faint whiff of oil when I'm out of the car or have the window open when stationary

Where to start... There's an exploded view of the crank cases in the web but I'm buggered if I can find it.
There's two sump seals, the steal sump has a sensor in at the base screws to an alloy casting, this casting can leak on its seal to the block and the subframe fouls removal. Then there's the various apertures in the block itself, oil pump as mentioned earlier, dip stick tube seal, oil pressure switch, front crank seal.
Then at the top there's the cam seals and obviously the cam cover seals.

All of these can leak down, it all ends up on top of the sump. Very difficult to spot due to surrounding parts, cam belt covers, auxiliary parts, exhaust heat shields etc.

Rear crank seal leaks into the bell housing. Only seen one of these though, and it had had gear box work prior to, which coincided with the start of the leak.

My first 2.5 had a weeping rear crank seal  Hope its not that  Although i noticed a wiff off oil when it was started from cold yesterday 

[SMD]

Chrisgixer,  can any of those lead to a major oil leak?  Or can I put my mind at rest with the knowledge that It's a vauxhall and they all do this 

[martin42]

oil pump o ring for pressure switch just below cam covers is a favourite place for leaks on my 2.6 then got blown back onto sump & further back worth a look.

Worth a look 

So we all have oil burners 

Ps. Where about's , what side is oil pump oring pressure switch 

Some have more then 1 dont they 

[ianu]

Going back to the original post. As you've had an oil change, you sure you haven't spilt a small amount of oil down the filler pipe onto the manifold and it's just burning off.
I know it can be a bit tricky getting that first spout of oil in the neck if you're not using a funnel 

[Shackeng]

Remeber its an Omega built by Vauxhall and they are incontinent when it comes to holding any forms of fluid..oil/coolant etc

You've got one of the cheap ones then, mine were built by Opel.

[chrisgixer]

Chrisgixer,  can any of those lead to a major oil leak?  Or can I put my mind at rest with the knowledge that It's a vauxhall and they all do this 

That's my way of thinking, it has to be said just turn the Radio up, it'll be fine.

[Radar]

Might be off the mark but have you checked to see if any of the cam cover bolts are loose?

[chrisgixer]

Might be off the mark but have you checked to see if any of the cam cover bolts are loose?

Yep, always worth a look they do come loose.

[The Waynester]

Guys

Picking my rocker cover gaskets from VX tomorrow
what is the part number for the sealant i need to get while I'm there

Before when my gaskets went, I had the common "steam" coming from the bonnet
But this time nothing.. Still smelling of oil
Going to see Symes this Sunday for him to check all possibilities