406 HPI

[runnicker]

I have a 406 hpi 51 plate with 60000 on the clock it has recently had a nwe valve setting hub and a cambelt fitted. The problem i have is that as the engine warms up from start it surges between 1000/500 revs it will then settle down and run normally . the main dealer cannot find the fault anybody got any ideas. runnicker

[mjb]

Try having a read of this: viewtopic.php?f=1&t=3489