New To The Family- Ticking Noise. Help Appreciated.

[Esartwente.]

Hey guys, recently purchased myself a series 2 Stagea RB25DET Neo and the other day taking it on a long drive and after arriving home i could hear a almost knocking noise from the engine (barley noticeable but bad enough to make me concerned) so i popped the hood and had a listen.- the noise is worse when hot, cant be heard off of idle, isn't hearable at idle when cold and using the screw driver trick the noise can be hear from the front (near runners 1,2) of the intake manifold but the noise can also be heard from the RH rear rocker cover... Just wondering if anyone has had any similar experiences.

Thinking it could be one of the rear cam/shim clearance.-noise at the back of the rocker cover makes me think that.

Any advice/experiences would be greatly appreciated.

Some photos of the Joy.

Thanks.

[GoldZilla]

Firstly, congratulations on your purchase and welcome to SAU.

Is it only audible with the engine off and after a long drive, when the engine has had a chance to reach full operating temps? If it's a ticking noise with the engine off, it's most likely only the regular sound of the engine cooling down.

Because there are different metals used for different parts of the engine, they all cool at different rates, and the stretching and contracting of those metals at different rates is what causes that noise.

[kidafa]

Another SA stag

[Esartwente.]

Thanks mate.

Nah i know that noise, the noise Im hearing is always at idle when hot and its more of a knock then a tick (sorry about the title description).

Yeah looking forward too a couple of Stagea cruises.

and too take some more photos.

[fat-lad]

noise from the intake would more than likley be injector tap or worse an air leak (you would notice sh***y running though), my s1 injectors are quite loud but they have been reco'd, use you screwdriver trick on the injectors and you will see what im talking about, to listen for an air leak, i use a piece of vacum hose stuck in my ear one end and point it around the intake gasket you will be suprised at what you can hear doing this, the noise at the back of the tapper cover could be a sticky lifter maybe, run some nulon lifter free through it next oil change and see how it goes!!

Edited October 27, 2009 by fat-lad

[Esartwente.]

Thanks fat-lad, ill be giving the lifter free try today as i only just changed the oil recently. Ill let you know .

Thanks again.

[66yostagea]

On page 4 there is a long discussion with DaveB on a similar problem. Check it out.

[SLEEPR85]

noise from the intake would more than likley be injector tap or worse an air leak (you would notice sh***y running though), my s1 injectors are quite loud but they have been reco'd, use you screwdriver trick on the injectors and you will see what im talking about, to listen for an air leak, i use a piece of vacum hose stuck in my ear one end and point it around the intake gasket you will be suprised at what you can hear doing this, the noise at the back of the tapper cover could be a sticky lifter maybe, run some nulon lifter free through it next oil change and see how it goes!!

lol, can we get a vid of you doing this?

[Esartwente.]

Cheers for the input fellas. Okay so today i grabbed some of that Wynns engine flush and put it in the car and then drove the car to trade school ( wynns man said it was okay to leave it in over night). Got too trade school noise was still there a couple of the blokes had a listen and said bottom end. But bottom end is more under load and higher up in revs. So after trade school i drove it too work (I'm an apprentice mechanic)-And let the other mechanics have a listen all of them couldn't distinguish where or what it was possibly shims/lifters. (unsure if series 2 are hydraulic or not).

But the noise is that quite when they were trying to listen too it they said don't worry about it and wait a little bit and see if it gets worse.

So i drained the engine oil etc. ran it again, drained it again. Put some 10w40 in and started her up, drove the car home and the noise was still there.

So im at the point where i am waiting and hoping that it doesn't get worse. (and ill be keeping a close ear out for any change what so ever)

Thanks again.

[fat-lad]

lol, can we get a vid of you doing this?

hahahahhahaaha

[fat-lad]

did you try puttin lifter free in there with the new oil???

[pixel8r]

My previous s2 used to make a faint knocking noise when idling. Wasn't loud or anything and didn't sound that bad. It never got any worse so I never did anything about it. Pretty sure I was told it was likely the lifters...so my guess is that its fairly normal on the NEO engines.

I owned the car for 2 years and never had any issues from the engine. The RB25's are pretty solid. Not the smoothest idle i've heard but it was always a strong performer.

[66yostagea]

RB engines can smooth idle.Ghostrider sent me a pic of his 1UZ Cressida that had a 50c piece standing up with motor running. LOL. I sent a pic back of my S1 with the 50c standing, so they can idle smooth. I must admit though that had just give it a major service and changed all the belts.

[Esartwente.]

Nah i havent put any of that Nulon Lifter free in. Haven't had time to go too the shops yet.

Yeah- the knocking isn't that loud i just wanted to catch it before it got worse if there was anything i could do.

thanks guys.

[wolverine]

Solid lifters on S2 stageas BTW.

[3intheBack]

On the S2, at the back of the tappet cover is a polution control solenoid. It tickers away at idle and goes away as soon as you put some revs in.

Mazda V6's used to have the same problem and the factory solution was to rubber mount the solenoid.

Either way, the NEO is a solid motor, thrash it till blows!

[BensDR30]

Drop in at the Stag dyno day next fortnight - there will be plenty of set of ears that can offer opinions (I won't say advice!)

[kidafa]

Yeah come to the dyno day.... So you can meet some of the SA stag crew and chuck it on the rollers to see if its running as it should and then you will have a base figure before mods

Looking forward to catching up with you all.

[Esartwente.]

Yeah sounds like ill have to come along and meet up with some Stag owners. - Where/When is it held at?

[BensDR30]

http://www.skylinesaustralia.com/forums/in...t&p=4831664

http://www.skylinesaustralia.com/forums/in...t&p=4798712