**URGENT** XR8 engine knock

RG · 11-11-2006, 08:16 PM

Well it has **** itself again. This time it's an engine knock, i'll try to explain it as best as possible. It is a mettalic sound that is at half engine speed, I can't tell exactly where it is coming from but it does increase with revs. The car also now has a miss and is really running like a dog. Also does anyone know if there are any mechanics or anyone able to help me with this tomorrow as I am at my better halfs parents place in Hampton Park and I need to be able to get home. If anyone on here is able to help there will be something in it for you ( I hate to have to ask but i'm desperate).

Cheers,
Russ.

xr8ute · 11-11-2006, 08:29 PM

Pop the valve covers off and have a good look. Sounds like maybe a busted rocker/pushrod/valvespring...

Dont run or drive the engine any further (if at all possible) before having a good look.

RG · 11-11-2006, 08:34 PM

Quote:

Originally Posted by xr8ute

Pop the valve covers off and have a good look. Sounds like maybe a busted rocker/pushrod/valvespring...

Dont run or drive the engine any further (if at all possible) before having a good look.

I would do that but atm I am without any tools. I have had to drive it about 30k today (from lilydale to Hampton Park) and it hasn't gotten any worse.

mik · 11-11-2006, 08:43 PM

you could find which cylander is a dud by removing 1 spark plug lead at a time when it stops missing that is your cylander, you can doit with the engine running if your careful....... but its probably easier to pull 1 lead off at a time then start the motor, if you zapped you will feel it, you will know what cylander too look at for investigation, just be carefull getting leads off.

RG · 11-11-2006, 10:38 PM

Quote:

Originally Posted by mik

you could find which cylander is a dud by removing 1 spark plug lead at a time when it stops missing that is your cylander, you can doit with the engine running if your careful....... but its probably easier to pull 1 lead off at a time then start the motor, if you zapped you will feel it, you will know what cylander too look at for investigation, just be carefull getting leads off.

That won't find the knocking though.

mik · 11-11-2006, 10:50 PM

you did say you werent sure where it was coming from, if it was valve gear oriented it might help pin point it.

RG · 11-11-2006, 11:41 PM

Quote:

Originally Posted by mik

you did say you werent sure where it was coming from, if it was valve gear oriented it might help pin point it.

I'll give it a go in the morning, thanks.

Pinkbits · 12-11-2006, 03:17 AM

Have tools, will travel.
phone no has been p.m'd to you.

Pinkbits · 12-11-2006, 03:21 AM

Whoosha had the same sounding problem early this year, turns out it was a broken valve spring, fingers crossed.

**Whoosha** · 12-11-2006, 11:30 AM

Quote:

Originally Posted by REDXR8BLOKE

Whoosha had the same sounding problem early this year, turns out it was a broken valve spring, fingers crossed.

Does sound very simular dont it "Bloke" :gren: give us a yell if we"re going for a drive ( I no just ware to look)... :lookedat:

RG · 12-11-2006, 01:06 PM

Just had a quick listen to it and i'm pretty sure it is coming from the r/h rocker cover.

xr8ute · 12-11-2006, 01:15 PM

Time to pull the rocker off man, check the damage.

RG · 12-11-2006, 01:17 PM

Quote:

Originally Posted by xr8ute

Time to pull the rocker off man, check the damage.

Just waiting on Bloke and Whoosha to come over and give me a hand.

JC · 12-11-2006, 01:19 PM

Quick way to get rid of the noise is to take the rocker cover off, find which valve/spring is busted, and take the rocker off, & remove the pushrod. Then put it all back together and remove the spark plug lead to that cylinder at the coil pack end. Hope it all works out. Bloke and Woosha are legends for answering your call to arms!

xr8ute · 12-11-2006, 01:56 PM

Cool, let us know how it goes...fingers crossed its nothing too drastic.

RG · 12-11-2006, 02:08 PM

Well they've been and gone, thanks again to bloke and whoosha, and yes it is a valve spring on 7 it would seem. So i'm off to G&D in the morning. I wonder what else I can do while i'm there...

dansedgli · 12-11-2006, 02:10 PM

Stroker kit, blower, diff gears :P

xr8ute · 12-11-2006, 02:53 PM

Was the valve OK, or was it stuck in the guide?

RG · 12-11-2006, 03:05 PM

Quote:

Originally Posted by xr8ute

Was the valve OK, or was it stuck in the guide?

Didn't pull the rocker cover as it could be heard with a piece of hose. It's off to G&D on a tow truck tomorrow (simply because that is the only way I can get it over there). If anyone knows of a good tow truck let me know A.S.A.P.

peterban · 12-11-2006, 05:05 PM

What damage would it do if you drove it from Hampton park to Cranny?

rag top · 12-11-2006, 05:42 PM

Quote:

Originally Posted by RedXR8220

If anyone knows of a good tow truck let me know A.S.A.P.

Casper was impressed with the guy who rescued his XR6 on the weekend. I think he mentioned it was Associated Towing, or something similar.

**Whoosha** · 12-11-2006, 06:48 PM

All good now the red rocket is resting comfortabley in down town cranbourne
in my drive way :Reverend: any one need some cheap bits :thebirds:

RspecAU · 12-11-2006, 07:19 PM

Quote:

Originally Posted by Whoosha

All good now the red rocket is resting comfortabley in down town cranbourne
in my drive way :Reverend: any one need some cheap bits :thebirds:

Thanks Whoosha that Herrod intake for $50 was a great deal

:

JC · 12-11-2006, 07:24 PM

Quote:

Originally Posted by Whoosha

All good now the red rocket is resting comfortabley in down town cranbourne
in my drive way :Reverend: any one need some cheap bits :thebirds:

70mm TB would be great, and the MAF too. How much for postage?

Pinkbits · 12-11-2006, 08:01 PM

Quote:

Originally Posted by JC

70mm TB would be great, and the MAF too. How much for postage?

Too late, just washing hands and putting tools away whilst Tracey is loading the Econovan with my garage sale specials.

70m throttle body, BA 18's and Herrod headers.
Thanks Whoosha, you are a good bloke!

NeishaXR8_347 · 12-11-2006, 08:39 PM

Ill take the GT40 upper intake manifold.
Do you do postage to 3023?

galaxy xr8 · 12-11-2006, 08:46 PM

Great to see some forum member's helping out another in time's off need, these valve springs seem to be a comon problem with the AU XR8's.

RG · 12-11-2006, 08:51 PM

What, doesn't anyone want the Herrod cats, catback system or the Unichip?

Seriously though thanks again Whoosha for helping me out.

**Whoosha** · 12-11-2006, 08:53 PM

Quote:

Originally Posted by galaxy xr8

Great to see some forum member's helping out another in time's off need, these valve springs seem to be a comon problem with the AU XR8's.

Can do a special deal on the heads the one with the dud spring in it is a little cheaper.... :evil_laug
Only diff & a few panels left now Be quick ... the red XR8220 owner will be back in Ballarrat soon, Log on and see what I"ve been up too

:

RG · 12-11-2006, 09:00 PM

Quote:

Originally Posted by Whoosha

Can do a special deal on the heads the one with the dud spring in it is a little cheaper.... :evil_laug
Only diff & a few panels left now Be quick ... the red XR8220 owner will be back in Ballarrat soon, Log on and see what I"ve been up too

:

I am officially back in Ballarat, brought here by a Magna

:
Should I call my insurance company now Whoosha or wait until all the parts are gone?

: