Engine Valve

coxmattycox

coxmattycox

coxmattycox

Associate
Joined
10 May 2007
Posts
308
Hi all,

Quick question please.

When changing a exaust valve in a engine, does the oil need draining/replacing?

Garage has replaced one in my engine and it has had an oil leak a day after?
 
Call them, they've worked on the engine and it now has an oil leak, if they're a half decent garage they'll be happy to have a look and see what's wrong.
 
To change a valve the cylinder head has to be removed. When you do this the coolant will get into the oil as a matter of course, so yes the oil would be changed, or at least it certainly should be.
 
Yes, it's quite easy for an engine to develop an oil leak after changing a valve - as that entails removing the cylinder head and a lot of other parts. As mentioned above by Zack, the oil usually gets contaminated so it needs changing as well.

Can you see where the leak is coming from? It might just be a loose filter or sump plug.
 
OK thanks,

I wanted to check this is something they could have touched before ringing them.

To say I am not happy is an understatement.

They had the car for over a week (2 days diagnosing a misfire) then they kept having confusion with part numbers, meaning things constantly got delayed. They're communication was terrible, I had to arrange lifts for a week and they only ever called me once, I had to always ring them even though they knew I had to arrange transport everyday.

And now this... there is an oil spill up the street for as long as the eye can see. (worried about bikes etc)

Do you think I am being harsh by potentially expecting some kind of warranty on the engine? I'm worried this could have caused future problems.
 
2 days to find a misfire? Not exactly top notch technicians then.

That must be some hell of a leak, I would contact them and get them to recover it, you could cause more damage by driving it.
 
It wasn't my usual garage. I had recently moved jobs and this garage was just up the road so I thought I would give them ago. Never again.

When they did diagnose the problem, they kept getting the wrong valve. Originally blamed the parts supplier, then started having issue with the size of the valve's. Apparently my mk5 common as muck Fiesta was on a change over period?
 
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OOh that's quite a drip :D That ain't no loose sump plug.

Top it up, start it up and try and see where it's leaking from. Jack it up if necessary.

If you just pass it back to the garage without taking a look yourself first they will more than likely say something they didn't touch has failed and you'll have to pay for it.
If you can confirm it's a part they have had to remove in changing your valve/removing your cylinder head and then buggered it in the process, they should be bearing the costs. IMO
 
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Unfortunately I am away all weekend. So they are picking it up tommorow, my mum's now having to stay in. All in all a complete joke. I'm worried about any other damage they've caused
 
Just an update...

Sounds like the head gasget leaked.

But, they said they couldn't get it to fit again correctly. So they've either right borked it up or attempted to fit the wrong one in the first place!

So a new one ordered
 
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