Rattle on starting from cold
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Drummerman
- 2nd Gear
- Posts: 128
- Joined: Fri Feb 10, 2012 8:35 pm
Rattle on starting from cold
I'm sure I haven't heard it before, but the last few days when starting first thing in the morning there is a nasty rattle from the engine for a couple of seconds. For the rest of the day it starts without the noise. Have I bought a rogue ( what with the gearbox problems) or is it not as bad as I think (big ends). Any ideas??
Re: Rattle on starting from cold
Sounds like the cam chain tensioner / variable valve timing piston.
You can log the variable valve timing to see if it's that.
You can log the variable valve timing to see if it's that.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
Re: Rattle on starting from cold
Mine does this - "rattles" for 2 seconds or so then good as gold and only from cold. Have heard other members with the same issue and no problems with the car - I believe a warranty engineer raised it on a warranty report that caused a problem when renewing but think it was sorted easily in the end
Re: Rattle on starting from cold
The tensioner is also what provides your variable valve timing. What makes the noise is the piston not holding oil pressure so it slacks off and until it fills again what you are hearing is the chain flapping around. No biggy as long as the car can still vary the valve timing enough. Does point to wear though, and you should plan on changing it next time yoru rocker covers come off.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
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Mr Footlong
- Cruising
- Posts: 4331
- Joined: Thu Nov 10, 2011 12:07 pm
Re: Rattle on starting from cold
Dingdingding. I have this exact thing too. Only tend to notice it when the car has ben left for a few days. Basically I hear it every time I start up due to only driving her once/twice a week. for a couple of seconds from the second she starts you here this metallic-like rattle but it goes away after that. I knew it was bothering me for a reason......
/Edit - Good god I am typing gibberish today.....
/Edit - Good god I am typing gibberish today.....
Last edited by Mr Footlong on Fri Feb 17, 2012 3:46 pm, edited 1 time in total.
Current:
23' C8 RS6 Vorsprung - 23' RS E-Tron GT Carbon Vorsprung
Gone:
"Brutus"- C5 RS6 Avant - MRC stage 2 - Milltek non-res + 100 cell cats - Wagner ICs - PSS9 - H&R ARBs - OZ Superturismo LM - C6 Custom brakes - HD RNS-E - Various other bits - 555PS/832Nm
"Taz"- C7 RS6 - MRC stage 2 745PS/1095Nm
12' Cayenne Turbo, B7 RS4, S3, Cupra R, XJR, EVO VII, STI8,5,2&WRX, 106 GTI&XSI, other crap.
23' C8 RS6 Vorsprung - 23' RS E-Tron GT Carbon Vorsprung
Gone:
"Brutus"- C5 RS6 Avant - MRC stage 2 - Milltek non-res + 100 cell cats - Wagner ICs - PSS9 - H&R ARBs - OZ Superturismo LM - C6 Custom brakes - HD RNS-E - Various other bits - 555PS/832Nm
"Taz"- C7 RS6 - MRC stage 2 745PS/1095Nm
12' Cayenne Turbo, B7 RS4, S3, Cupra R, XJR, EVO VII, STI8,5,2&WRX, 106 GTI&XSI, other crap.
Re: Rattle on starting from cold
Like I said, you can check that the variable valve timing is still dephasing the inlet cams withthe Vagcom. IIRC you can get up to 46° dephasing.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
-
Mr Footlong
- Cruising
- Posts: 4331
- Joined: Thu Nov 10, 2011 12:07 pm
Re: Rattle on starting from cold
Sounds too complicated for my noggin so I will ask the guys while she is still up there.Shoppinit wrote:Like I said, you can check that the variable valve timing is still dephasing the inlet cams withthe vagcom. IIRC you can get up to 46° dephasing.
Current:
23' C8 RS6 Vorsprung - 23' RS E-Tron GT Carbon Vorsprung
Gone:
"Brutus"- C5 RS6 Avant - MRC stage 2 - Milltek non-res + 100 cell cats - Wagner ICs - PSS9 - H&R ARBs - OZ Superturismo LM - C6 Custom brakes - HD RNS-E - Various other bits - 555PS/832Nm
"Taz"- C7 RS6 - MRC stage 2 745PS/1095Nm
12' Cayenne Turbo, B7 RS4, S3, Cupra R, XJR, EVO VII, STI8,5,2&WRX, 106 GTI&XSI, other crap.
23' C8 RS6 Vorsprung - 23' RS E-Tron GT Carbon Vorsprung
Gone:
"Brutus"- C5 RS6 Avant - MRC stage 2 - Milltek non-res + 100 cell cats - Wagner ICs - PSS9 - H&R ARBs - OZ Superturismo LM - C6 Custom brakes - HD RNS-E - Various other bits - 555PS/832Nm
"Taz"- C7 RS6 - MRC stage 2 745PS/1095Nm
12' Cayenne Turbo, B7 RS4, S3, Cupra R, XJR, EVO VII, STI8,5,2&WRX, 106 GTI&XSI, other crap.
Re: Rattle on starting from cold
Mine used to do it but I had them replaced 
950 nm torque!
Ohh running bridgestones because they are the best
Ohh running bridgestones because they are the best
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Drummerman
- 2nd Gear
- Posts: 128
- Joined: Fri Feb 10, 2012 8:35 pm
Re: Rattle on starting from cold
Thanks guys and Amanda for putting my mind at rest!! I am taking the car up to Unit 20 in a couple of weeks for them to look it over before I start my big fight with Warranty Direct over the gearbox, so it is one more thing on my list!! I think I'll be spending a bit of money again shortly. Just had to have 4 new Michelins as whoever had the car before me had put Kumhos on it and they hard worn to the wire on the inside at the front (knobbly bits??).
Re: Rattle on starting from cold
amanda1 wrote:Mine used to do it but I had them replaced
Me to
Avus Avant, RNS-E mk2 with sds and Bluetooth, Milltek, Hotchkis, Bilstein, Forge, ITG, A.C.E, Wagner, FBMFSW, MTM.
Re: Rattle on starting from cold
Warranty Direct refused to cover my engine due to the rattle and demanded a full engine health check including oil pressure and compression checks. I got the checks done and they still refused cover, with hindsight probably a good thing.marv8 wrote:Mine does this - "rattles" for 2 seconds or so then good as gold and only from cold. Have heard other members with the same issue and no problems with the car - I believe a warranty engineer raised it on a warranty report that caused a problem when renewing but think it was sorted easily in the end
Avus Avant, RNS-E mk2 with sds and Bluetooth, Milltek, Hotchkis, Bilstein, Forge, ITG, A.C.E, Wagner, FBMFSW, MTM.
Re: Rattle on starting from cold
Depends if it's a rattle or ticking. They all tick from cold for a while.
I started mine up for the first time in 3 months at the weekend. It ticked for a while then stopped. I then just stood there dribbling at the smooth sound of the v8! It has been tooo long!! My wife came out the house and looked at me really strange almost the same look when you are caught glancing at another woman! Lol
I started mine up for the first time in 3 months at the weekend. It ticked for a while then stopped. I then just stood there dribbling at the smooth sound of the v8! It has been tooo long!! My wife came out the house and looked at me really strange almost the same look when you are caught glancing at another woman! Lol
Re: Rattle on starting from cold
Ticking is normal and is even mentioned in the owners manual.GarethRS wrote:Depends if it's a rattle or ticking. They all tick from cold for a while.
I started mine up for the first time in 3 months at the weekend. It ticked for a while then stopped. I then just stood there dribbling at the smooth sound of the v8! It has been tooo long!! My wife came out the house and looked at me really strange almost the same look when you are caught glancing at another woman! Lol
These rattles / ticking noises must be a Cosworth thing, my old RS500 used to rattle it's nuts off first thing although that was piston slap
Avus Avant, RNS-E mk2 with sds and Bluetooth, Milltek, Hotchkis, Bilstein, Forge, ITG, A.C.E, Wagner, FBMFSW, MTM.
Re: Rattle on starting from cold
Bet you wish you'd kept it though, eh?
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
Re: Rattle on starting from cold
Yes i do 
but at the time 11 years ago now, 7 mpg and new additions to the family mean't i couldn't
but at the time 11 years ago now, 7 mpg and new additions to the family mean't i couldn'tAvus Avant, RNS-E mk2 with sds and Bluetooth, Milltek, Hotchkis, Bilstein, Forge, ITG, A.C.E, Wagner, FBMFSW, MTM.