
Originally Posted by
mmd78
Gents
I need your help again.
Car: C2 VTS 210.000 km on the clock, not mapped.
Issue: after leaving the car parked for 8-9 hours, next start is difficult, engine stumble stall, and trying to accelerate sounds like a flooed engine.
after 1 minute in idle problem disappear
accelerating for 5-10 seconds rpm barely reach 2000-2500 rpm
Actions:
1) check manifold for snapped bolts-> is ok
2) checked hoses for air leaks (vacuum line to brake booster, canister valve)-> all good
3) measured the injector leaks on bench, all good spray equally, leakage at high pressure within limits
4) Ultrasonic cleaning (from a professional), re tested on injector bench, small improvement in spray and little less leaking
5) replaced injector o-rings -> problem still there
6) replaced: coolant temperature, engine speed sensor -> problem still there
7) swapped coil pack from another car-> problem still there
Any other suggestions?
Is there any pressure regulator for the fuel pressure somewhere on the fuel line or any non return valve than may check?
Thanks
M.