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Post by xpeterpx on May 20, 2018 18:57:37 GMT 1
Was asked by a neighbour today who has a 3 cylinder Corsa d 08 petrol with a slightly noisy timing chain if there is any way to quieten it down without changing it?
I think its prob down to neglected oil changes in the past
Only thing I can think of is a slightly thicker grade oil change?
Got slightly stumped on this one so thought i would run this by you lot.
Also anyone confirm what i am thinking that the Corsa should be using a unique oil filer with the return valve built in. I seem to remember something about these for Vauxhalls?
Cheers
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Post by Anna Rack on May 20, 2018 19:29:37 GMT 1
I've changed a couple of rattly Corsa chains and found they tend to stretch, meaning the tensioner is on its limit.
I'm not sure thicker oil will help, it may quieten the chain down a bit but it won't do the hydraulic tappets much good.
It's a paper element oil filter, so I think the non-return valve is built into the housing. If in doubt go for a genuine item.
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Post by xpeterpx on May 20, 2018 19:47:23 GMT 1
I've changed a couple of rattly Corsa chains and found they tend to stretch, meaning the tensioner is on its limit. I'm not sure thicker oil will help, it may quieten the chain down a bit but it won't do the hydraulic tappets much good. It's a paper element oil filter, so I think the non-return valve is built into the housing. If in doubt go for a genuine item. Thanks. Out of interest whats involved in changing the chain and any ideas on cost please? |
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Post by Anna Rack on May 20, 2018 21:08:18 GMT 1
It's quite an involved job. Others will be more knowledgable but I would have thought at least £300+ at a garage and it's good practice to replace the water pump and thermostat etc at the same time.
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Deleted
Deleted Member
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Post by Deleted on May 20, 2018 21:21:13 GMT 1
Is the timing chain noisy all the time or just at initial start up?
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Post by chippie on May 20, 2018 22:19:27 GMT 1
Imho, Corsa timing chain swap is fairly straight forward, although you do need a couple of special tools....for setting the camshaft timing.
If the chain is allowed to run continually 'slack' there is a chance of it wearing through the cover...
RPM did a chain replacement quite recently....Ask him...
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Post by xpeterpx on May 20, 2018 22:36:23 GMT 1
Imho, Corsa timing chain swap is fairly straight forward, although you do need a couple of special tools....for setting the camshaft timing. If the chain is allowed to run continually 'slack' there is a chance of it wearing through the cover... RPM did a chain replacement quite recently....Ask him... Noisier for a couple seconds on start up bit stays quite noisy like tappity on warm idle |
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Post by chippie on May 20, 2018 22:40:41 GMT 1
Imho, Corsa timing chain swap is fairly straight forward, although you do need a couple of special tools....for setting the camshaft timing. If the chain is allowed to run continually 'slack' there is a chance of it wearing through the cover... RPM did a chain replacement quite recently....Ask him... Noisier for a couple seconds on start up bit stays quite noisy like tappity on warm idle What sort of mileage has the car done? Could be a worn oil pump What is the oil pressure like? Had a recent oil change/filter.... |
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Post by spannermonkey on May 21, 2018 8:17:51 GMT 1
Make sure it's the chain as i got one changed and noise was still there,it was the tappets/lifters.
Was also told never run an engine flush through these
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rpm
Apprentice
Posts: 1,504
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Post by rpm on May 21, 2018 15:24:38 GMT 1
Was asked by a neighbour today who has a 3 cylinder Corsa d 08 petrol with a slightly noisy timing chain if there is any way to quieten it down without changing it? I think its prob down to neglected oil changes in the past Only thing I can think of is a slightly thicker grade oil change? Got slightly stumped on this one so thought i would run this by you lot. Also anyone confirm what i am thinking that the Corsa should be using a unique oil filer with the return valve built in. I seem to remember something about these for Vauxhalls? Cheers Don't go down the thicker oil route, it will cause more issues than it (possibly) solves. Oil quality, viscosity and age is so important on these engines. Regular oil changes will prolong the life of the engine and setup. The chain stretches but is kept tight by the tensioner. lack of oil, or wrong viscosity and/or pressure will have a profound effect. When timing cover is removed, look at how far the tensioner piston is protuding. If it is long way out the chain and tensioner need replacing, no other cure. If it is not protuding much then possibly just a tensioner might be all that is needed. But if you have stripped it all down to get to it, why not replace everything, including the chain, guide rails and sprockets. Very little more relative cost involved. It is quite an involved job, but not horrendous, there is actually quite a bit of room to move and work, but you do need access to a timing/locking kit. Its remove rocker cover to line up the cams and lock them, remove engine mount, water pump, alternator and timing cover (note the 4 bolts into the sump from underneath). Lock the crank in place with the push in bar. Remove the tensioner, guide rails and sprockets to remove the timing cover gasket. Then reverse procedure to reassemble. Make sure you pull the pin out from the tensioner and wind the engine over by hand before putting everything back together. Spin the engine over on the starter with coil disabled to pressure the new tensioner. |
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Post by xpeterpx on May 22, 2018 7:45:58 GMT 1
Thank you for all your advice
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