I had a similar fault on a Renault Megane people carrier
But didn't find it until , I had someone else sitting in turning it over, whilst I looked in the engine compartment.
Fuel pipes to the injectors, the inner pipes were punctured fuel under pressure was flowing between inner and outer pipes and ballooning .
I had bought it from new and had it about 3 years
Renewed pipes.
All ok after that.
I had a Citroen relay to,medium wheel base high roof
jumped in one morning, turned the key nothing, battery was ok.
Found the problem the Bonding braid from the engine to body at the front is clamped between a manufacturers washer and bolt, this set up had created a high resistance from rust.
Take the washer off(bin it) clean rust off body and bolt clean braid replace without washer cover with copper grease , back on the road.
scotty dog, March 2013