In cold start, the car starts without any problems however when the car is at operating temperature and I switch it off for about 30 mins and then start it again the engine stutters for 1 - 2 seconds, but does not stall. It also doesn't rev above 1000 rpm and then back to 600 as normal, it barely reaches 600 rpm. If I switch the engine off and on again straight away, everything is fine.
Spark plugs and ignition coils are 30,000 km / 2 years old, the high-pressure fuel-pump and fuel-pessure control valve are brandnew. Valve cover gasket and accordingly the crankcase ventilation is also new. The battery is also OK and supplies enough voltage. MAF and MAP sensors were inspected, cleaned and reinstalled.
The fault memory was read with Ista+, but there are no faults.
Here is a video where you can see or rather hear the strange starting behaviour. (Difficult to convey on a video)
I looked at the live data with Ista+ and found out that within 8 - 10 minutes the complete idle rail pressure drops from 9 mpA to almost 0. Does this indicate a leaking injector?
Can any of you help me further?
