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New Member
z18xer fitted new pullies and solenoids still rattling?
Hi guys so I recently fitted brand new GM cam phaser pullies both intake and exhaust and also fitted 2 new solenoids but I am still getting the rattle on startup which goes away in like 3 seconds. You can still here the intake pulley very faintly rattling once it's warmed up.
Does anyone know if this is normal because am really not sure what to do now as I have replaced every component from the vvt system and I am 100 percent sure its still coming from the intake pulley because if you pull the plug to the intake solenoid when the engine is running it gets louder so its decently coming from the intake pully.
I have also recently changed oil and filter and I am using dexous 2 0w40 engine oil.
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1st August 2020, 10:21
#2
Regular Member
I've found the rattle reduces, if you give it a few seconds - following ignition on, until you engage the starter motor - say the time it takes to put your seat belt on.
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4th August 2020, 11:21
#3
I looked into this when i had mine and i think it is caused by wear in a non return valve which allows oil to drain overnight.
https://vauxhall.7zap.com/en/car/z02/e/4/30-0/
Number 8
Last edited by troutybrown; 4th August 2020 at 11:24.
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4th August 2020, 15:36
#4
I have new vvt pulleys and new solenoids and belt etc and mine was doing what yours is doing diesel type tick for about 2 seconds on start when motor is cold,I switched out the oil from from Genuine GM Dexos2 5/30 to FUCHS Titan GM Dexos2 5/30 and a Halfords/crossland oil filter this time choosing a filter without a non return valve and the noise is gone,hope that helps you.
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4th August 2020, 17:21
#5
As above, I've fitted lots of these.
You won't get rid of the "tick" until a new non return valve has been fitted.
Did you remember to remove the small filters from the new phasers???
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7th August 2020, 20:59
#6
New Member
A lot of useful info in this thread. I bought a timing kit 3 years ago to do the belt and pulleys for the 100k and/or 10 years but before I did I developed the diesel racket. I told my daughter just to drive it we'll take from there. I learned a bit about the system and after she returned the car to me as excess to requirements I thought I'd start by checking the solenoids as the rattle was intermittent. A daisy fault. Days it did it and days it didn't .I decided to check the inlet solenoid. You know. The one that just slides out and in easily. WELL it didn't go like Ed China or every other Haynes Manual. IE Now pull sprocket from shaft. Boy did it not want to move. With a lot of brute force and ignorance I got it out deforming the bracket on the solenoid in the process. I had seen somewhere that the OFFICAL VX resolve was to remove the filters. So I did this and tried to get it back in. I thought that I had but a trail of oil said otherwise. I removed it and this time it slotted right into position. With hindsight I should have checked the channel for debris. So I ordered 2 new solenoids. When they arrived I replaced the old with the new but this made no difference. As the rattle came and went I suspected the oil pressure may be varying so I purchased an oil pressure gauge with the intention of removing the oil pressure switch and substituting the gauge and noting any variation. But unlike the Astra where the oil pressure switch is right under your nose I 've still to find the switch.
Troutybrown's link shows the oil pump behind the rear timing belt cover and am now wondering whether to change oil pump when doing the belt and variators.
I'll fit oil pressure gauge first as if its OK there's no point in changing it.
Following this thread with great interest.
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7th August 2020, 22:53
#7
New Member
This makes good reading
https://www.vectra-c.com/forum/1843029
I guess I was not the only one with the difficulty getting the inlet solenoid out
https://www.vectra-c.com/forum/showt...=1#post1843029
Last edited by Pomeo; 7th August 2020 at 22:59.
Reason: linking
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24th August 2020, 20:45
#8
New Member
Originally Posted by
troutybrown
This is exactly the information I was looking for! It was the only logical thing in my mind with regards to startup. The NRV clearly isn’t retaining the oil needed at startup. The next question is how do you replace this? Has anyone done it?
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24th August 2020, 21:25
#9
Originally Posted by
mx_rab
This is exactly the information I was looking for! It was the only logical thing in my mind with regards to startup. The NRV clearly isn’t retaining the oil needed at startup. The next question is how do you replace this? Has anyone done it?
I believe the aircon compressor needs to be moved then there is a plug to undo and NRV sits behind.
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Post Thanks / Like - 0 Thanks, 1 Likes
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24th August 2020, 21:38
#10
New Member
Going to give vx a shout tomorrow for price and availability on that part No.8.
The rattle on mine is intermittent at startup but Iv been thinking for a while that its dependant on which way the ground is sloping. Either helping the gears to maintain their prime or allowing them to drain easier.
My theory is that after an extended period of time (with rattle) the cam gear internals start to wear due to lack of prime being maintained at startup. Thus causing cam gear failure.
Just hope I have caught mine early enough.
Thanks again
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