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[3.2 paisley wagon]

Plugs have not been changed since 2007 as  vaux recommend 8yrs or 80,000 miles.  Could a loose plug cause a ticking noise?

[3.2 paisley wagon]

proper GM oil labelled as AC delco

[feeutfo]

Hmmm, I hate diagnosing noises through a key board.

Can you post a video with sound...? Needs a hands on really. Somethings not right obviously.

[ffcgary1]

OK, take your car to the dealer and ask him to sort it out and dont be suprised at the bill you get, then if all else fails, take some of the advice from the members on here, who between us do have some knowledge on the v6 engines.
I have seen for myself vx mechanics reuse manifold gaskets when fitting replacment engines to cars, to which i commented on, the answers proberbly wont be of suprise to anyone.Do the easy cheap  things yourself first then post back on here if no improvment.

[3.2 paisley wagon]

can a leaky oil pressure switch cause any problems??

[albitz]

A loose plug could cause a ticking noise imo. It would sound similar to a slightly leaking exhaust gasket  - gasses being forced out under pressure. might be worth spraying some carb cleaner around the vacuum connections in that area as well.
If you do this and notice a rise in revs, then you have pinpointed a vacuum leak. :-/

[3.2 paisley wagon]

ffcgary1, i am asking here so i dont have to remortgage my house to pay my local rip off vaux dealer

[Andy B]

Plugs have not been changed since 2007 as  vaux recommend 8yrs or 80,000 miles.  ......

but don't be surprised if they're goosed miles before 80 000 miles. I had them in my car & removed them when I was working on the cam covers, even they'd done nothing like 80k in about 4 years, they were well past their best. 

[3.2 paisley wagon]

would a vacum leak cause a tick and engine vibration.  noticed when i lean my leg against the door panel when at idle i feel it smooth then a slight vibration from time to time coming and going.  Rev counter steady though at just over 500rpm

[Kevin Wood]

As said, if it's had regular changes with GM 5w30 the oil is not an issue. Does the ticking noise stop when the engine speed is raised above idle or just become less noticeable? Worth having an assistant operate the throttle while you listen?

Could indeed be manifold gasket or a loose spark plug so worth checking these.

Might be worth having a garage put an oil pressure gauge on it and checking that the oil pressure is not decaying at idle. Could be a sticking pressure relief valve, perhaps?

It is indeed very difficult to diagnose dodgy noises remotely, though. :-/

Kevin

[albitz]

I thinbk the point Gary is making is that you dont need to go to the expense of fully synthetic oil. Semi synth 10-40 is fine in the v6 engine, but its advisable to change it a bit more often.
Its approx. a bit less than a tenner for 5 litres on trade club.
I would add, its not always advisable to take notice of VX service intervals. They quote stupidly long intervals on some items to remain competitive with their rivals (who also do the same thing) and attract fleet buyers.
General opinion on here is oil/filter change at 4-5,000 miles and afaik plugs at a max. of 40,000.
And of course, cambelt/ tensioners at 40,000 or 4 years whichever is soonest.

[Andy B]

ffcgary1, i am asking here so i dont have to remortgage my house to pay my local rip off vaux dealer

You need to visit a local member who has a bit of mechanical nouse. I'm guessing you're in/near Paisley, Glasgow. 

[3.2 paisley wagon]

no Northern Ireland

[3.2 paisley wagon]

Albs i pay £18 for 6ltrs of 5w30 ac delco which is made by vauxhall

[Andy B]

Albs i pay £18 for 6ltrs of 5w30 ac delco which is made by vauxhall

Assuming Vauxhall Trade Club operates in NI then it'd be about £43 for 20 litres of semi-skimmed