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[JamesV6CDX]

It's no drama if the cambelt has to be popped off

[Marks DTM Calib]

Its not easy to do with the belt and water pump in palce (easier with them removed) as the bolt is bloody tight!

[Omegatoy]

Yeah, used some tecsol that Omegatoy gave me years ago, strong stuff. No effect.

lol you said earlier oil now stays clean, but it wont disolve a lump of something other than lumpy oil,
my bet is the relief valve has a score in the bore and is sticking, flush wont solve that!! needs to be removed and ball and bore polished till it runs smooth again!!

Is that an offer? When you back in the UK?

WAS SUPPOSED TO BE  IN UK end of feb beginning of march, dont look like its gonna happen now with the situation here but its a fairly easy job to do, let you know if i can get back!! but it could be a fair time yet!!

[tunnie]

Thanks Everyone 

Got next job to do, just finding a time when one of the experts are available 

[bootie]

WAS SUPPOSED TO BE  IN UK end of feb beginning of march, dont look like its gonna happen now with the situation here but its a fairly easy job to do, let you know if i can get back!! but it could be a fair time yet!!

Aah, so, good for me then, going to be popping over to see you once the Omega A is in the garage. We'll be in the camper!

Jon

[Omegatoy]

WAS SUPPOSED TO BE  IN UK end of feb beginning of march, dont look like its gonna happen now with the situation here but its a fairly easy job to do, let you know if i can get back!! but it could be a fair time yet!!

Aah, so, good for me then, going to be popping over to see you once the Omega A is in the garage. We'll be in the camper!

Jon

LOOK FORWARD TO IT jON

[bootie]

Surely your not that excited by my impending visit that you have to shout???

[JamesV6CDX]

Tunnie... where in London are you? Rail/Tube nearby?

Sort out my (cheap advance) train ticket and plentiful supply of beer, and we can soon pop the cambelt kit off ... (I wouldn't bother renewing it, let's see if it fixes the issue first)...

[TheBoy]

Wondering if pulling out the relief valve if its worth just replacing it. No idea how much they are though...

[JamesV6CDX]

Wondering if pulling out the relief valve if its worth just replacing it. No idea how much they are though...

Used known goood?

[TheBoy]

Wondering if pulling out the relief valve if its worth just replacing it. No idea how much they are though...

Used known goood?

If a new one is cheap, why faff around...

[JamesV6CDX]

Wondering if pulling out the relief valve if its worth just replacing it. No idea how much they are though...

Used known goood?

If a new one is cheap, why faff around...

Totally agree

My reply was more geared at your comment about not knowing how much they'd be - so what I meant was, if they're a lot of money, and they're generally reliable, then a known good item is an option

[Kevin Wood]

Wondering if pulling out the relief valve if its worth just replacing it. No idea how much they are though...

Used known goood?

If a new one is cheap, why faff around...

Totally agree

My reply was more geared at your comment about not knowing how much they'd be - so what I meant was, if they're a lot of money, and they're generally reliable, then a known good item is an option

The likely issue is that the old one is stuck in its' bore, though, which is probably a combination of burring on the bore and the valve. You can pop a new valve in but if the bore is still scored it will do exactly the same thing.

Better to take the old one out and inspect it and the bore first, then deburr both with a scotchpad or similar.

A new valve wouldn't be a bad idea if they are pennies in case the old one is so stuck you have to damage it to remove it.

Having said that, I know this is a common problem with the C20XE and SBD make a nylon replacement relief valve that is supposed to cure it once and for all. Not sure if the same valve is used on the V6. Might be worth an inquiry.. IIRC it was not cheap, though.

Either way, if the bore is not perfectly smooth any replacement valve will stick.

[tunnie]

What about replacing the whole pump? If its been stripped down that far, is it worth just swapping it out for a known good one? 

Tunnie... where in London are you? Rail/Tube nearby?

Sort out my (cheap advance) train ticket and plentiful supply of beer, and we can soon pop the cambelt kit off ... (I wouldn't bother renewing it, let's see if it fixes the issue first)...

Thanks for the offer, but here in London is not the ideal place to work on cars. I have zero tools here 

Its only an hour for my to drive home & have the garage available, I'd much prefer to do it there. 

Just have to source a time & possible replacement parts 

[TheBoy]

The likely issue is that the old one is stuck in its' bore, though, which is probably a combination of burring on the bore and the valve. You can pop a new valve in but if the bore is still scored it will do exactly the same thing.

Better to take the old one out and inspect it and the bore first, then deburr both with a scotchpad or similar.

A new valve wouldn't be a bad idea if they are pennies in case the old one is so stuck you have to damage it to remove it.

Having said that, I know this is a common problem with the C20XE and SBD make a nylon replacement relief valve that is supposed to cure it once and for all. Not sure if the same valve is used on the V6. Might be worth an inquiry.. IIRC it was not cheap, though.

Either way, if the bore is not perfectly smooth any replacement valve will stick.

Lack of me knowing that the valve isn't a complete unit, presumably its just the the insert that unscrews then?  Is the outside/bore part of the pump casting?