Rattle under load when engine is hot

[jmystaki]

Hi,

I have a 1997 Golf 2.0 8v - with 104k kms.

When the engine is hot I get a rattle between 1.5k rpm to 2.5k rpm under load/acceleration.

Troubleshooting:

1. replaced the spark plugs
2. decarbonised the head and intake with a spray kit
3. running premium 98 octane
4. no noises when revving the engine at a standstill
5. no obvious loose items under the hood
6. does not rattle when the engine is cold
7. no engine light to signify pinging
8. compression test - pass
9. fuel economy good
10. no faults from the computer

any suggestions/help or similar experience would be appreciated.

Cheers