Oil leaking from front of V6. - Alfa Romeo Forum
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(Post Link) post #1 of 15 Old 22-10-18 Thread Starter
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My v6 is leaking oil. I got a burning smell as it was dripping down onto the manifold cover. There was no oil there at all before and now there is quite a lot. I had to trailer it home. It's very hard to see exactly where it's coming from because of the slam panel for the bonnet. But to me it looks like it is dripping from the base of the dipstick.

Any ideas?

Edit: it seems to be above the dipstick. I think it's possibly from the rocker cover gasket. It's new and has driven for about 400 miles since installation with no leaks. I'm thinking it might be pinched or something?
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Last edited by samsemtex; 22-10-18 at 21:11.
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Quite an easy fix if it is the rocker cover gasket. Was it a genuine gasket fitted?
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(Post Link) post #3 of 15 Old 23-10-18 Thread Starter
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Quite an easy fix if it is the rocker cover gasket. Was it a genuine gasket fitted?
I couldn't tell you. It was my supposed renowned Alfa specialist who claimed he fitted it. I wouldn't be surprised if he didn't change it at all to be honest. The lesson i have learned is that mechanics who get recommended on internet forums tend to be a bit crap, and if a guys work yard looks like a scrap yard then it's a good idea to avoid him.

I can't believe some of the mechanics that get good recommendations from people.

But aside from that rant, yeah it's an easy fix so I'll do it myself. Luckily I've been able to reschedule my NCT without incurring a fee.
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Might be worth re-torquing the bolts on the rocker cover, in the correct order. Check none of them are not just spinning, sometimes the threads go on the one that also doubles up to hold the mount for the dipstick on.
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(Post Link) post #5 of 15 Old 23-10-18 Thread Starter
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Might be worth re-torquing the bolts on the rocker cover, in the correct order. Check none of them are not just spinning, sometimes the threads go on the one that also doubles up to hold the mount for the dipstick on.
Thanks, I haven't taken it off fully but I can feel one of the "tabs" that protrudes from the gasket is damaged and almost ripped off. So at this stage I'm assuming it's damaged. It's only €27 for an Elrich gasket and I've heard they are OEM quality so I might as well just change it.

Also, what is the correct order for tightening them?
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This is the gasket that was fitted to my car...what a ****ing imbecile.
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Might be worth re-torquing the bolts on the rocker cover, in the correct order. Check none of them are not just spinning, sometimes the threads go on the one that also doubles up to hold the mount for the dipstick on.
Iíve got the same job to do on my 166. What are the torque settings/tightening sequence for the rocker cover???
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(Post Link) post #8 of 15 Old 12-01-19 Thread Starter
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Quote:
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Might be worth re-torquing the bolts on the rocker cover, in the correct order. Check none of them are not just spinning, sometimes the threads go on the one that also doubles up to hold the mount for the dipstick on.
I’ve got the same job to do on my 166. What are the torque settings/tightening sequence for the rocker cover???
I just used a guide I found online for a generic valve cover. I don't think the Busso is anything special in terms of tightening sequence or torque.
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Iíve got the same job to do on my 166. What are the torque settings/tightening sequence for the rocker cover???

tighten from the middle outwards.. around 6 to 8nm ... just hand tight and a quarter turn ish
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After a bit of digging around I found the following settings from an Alfa workshop manual:

Cam cover bolts: 10-13 Nm

and

Front engine cover bolts: 8-9 Nm
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After a bit of digging around I found the following settings from an Alfa workshop manual:

Cam cover bolts: 10-13 Nm

and

Front engine cover bolts: 8-9 Nm
One final question on this procedure - to change the cam cover gasket (or rather, to remove the cam cover), eLearn details a lengthy removal procedure which includes removing the aux belt and cam belt covers... presumably to fully remove the small bracket for the cam belt cover?

Can anyone confirm if this is really necessary???

I guess I'm hoping all I need to do is remove the coil pack cover, remove the coil packs plus associated wiring, then unbolt the cam cover and remove it...
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(Post Link) post #12 of 15 Old 21-01-19 Thread Starter
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Quote:
Originally Posted by JeremyG View Post
After a bit of digging around I found the following settings from an Alfa workshop manual:

Cam cover bolts: 10-13 Nm

and

Front engine cover bolts: 8-9 Nm
One final question on this procedure - to change the cam cover gasket (or rather, to remove the cam cover), eLearn details a lengthy removal procedure which includes removing the aux belt and cam belt covers... presumably to fully remove the small bracket for the cam belt cover?

Can anyone confirm if this is really necessary???

I guess I'm hoping all I need to do is remove the coil pack cover, remove the coil packs plus associated wiring, then unbolt the cam cover and remove it...
Unfortunately you will have to remove the timing belt cover. It's not a big job, takes about 10 mins extra. Just a few fiddly bolts to undo.
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Quote:
Originally Posted by JeremyG View Post
One final question on this procedure - to change the cam cover gasket (or rather, to remove the cam cover), eLearn details a lengthy removal procedure which includes removing the aux belt and cam belt covers... presumably to fully remove the small bracket for the cam belt cover?

Can anyone confirm if this is really necessary???

I guess I'm hoping all I need to do is remove the coil pack cover, remove the coil packs plus associated wiring, then unbolt the cam cover and remove it...
You have to remove the upper timing cover, 3 10m bolts, in order to remove the I believe 13mm nut thingy that serves as a bolt hole for one of the timing cover bolts and it must be removed in order to remove 1 valve cover bolt, if I remember correctly, weird design. Everything is straight forward just do not drop any bolts or anything down the timing cover, you will have a rough time then. Moving the dipstick is a pain.
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Originally Posted by frosty984 View Post
You have to remove the upper timing cover, 3 10m bolts, in order to remove the I believe 13mm nut thingy that serves as a bolt hole for one of the timing cover bolts and it must be removed in order to remove 1 valve cover bolt, if I remember correctly, weird design. Everything is straight forward just do not drop any bolts or anything down the timing cover, you will have a rough time then. Moving the dipstick is a pain.
Yes - I just did this job today. The timing cover does have to come off, as you say, to remove the little timing cover bracket on the left side of the front bank cam cover. The manual says to remove the power steering reservoir but I managed without doing this. My car is a 166 and it was easiest to remove the upper engine stay bracket in order to get access to the cambelt cover retaining bolt nearest the firewall.

Anyway, the whole job took me a few hours while I worked out how to do this - plus, I spent some time running compression checks on the front bank (all consistent at 190psi) and cleaning the oil that had been leaking down the front of the engine.

And now - new cam cover gasket and plug rubbers - and no oil leaks. Happy days.

Now I just need to do the rear bank... and I think I'll change the plugs at the same time...

Pic below is of the front bank with the cam cover off, before reinstalling with the new gasket and plug rubbers.
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Quote:
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Yes - I just did this job today. The timing cover does have to come off, as you say, to remove the little timing cover bracket on the left side of the front bank cam cover. The manual says to remove the power steering reservoir but I managed without doing this. My car is a 166 and it was easiest to remove the upper engine stay bracket in order to get access to the cambelt cover retaining bolt nearest the firewall.

Anyway, the whole job took me a few hours while I worked out how to do this - plus, I spent some time running compression checks on the front bank (all consistent at 190psi) and cleaning the oil that had been leaking down the front of the engine.

And now - new cam cover gasket and plug rubbers - and no oil leaks. Happy days.

Now I just need to do the rear bank... and I think I'll change the plugs at the same time...

Pic below is of the front bank with the cam cover off, before reinstalling with the new gasket and plug rubbers.
Very nice, that is a clean engine and good looking cam lobes. It took me a an hour or two with breaks when I did it for the first time also. As far as the rear bank, do not be scared of the intake plenum or the clips on the runners. All comes off in a matter of 20-30 minutes. Mine is a 156 though, but should be very similar. Good luck!
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