Hey Ste
Ive the same prob, ive a renault megane dynamique, terrible issues starting it up. Only starts when it wants to starts otherwise ive to have my foot on the gas to get it goin, can actually hear the engine struggling and ofcourse not even renault can sort the problem! The revs go up when starting an it slowly trys to keep goin and then gives up! anyhting simular to yourself?
CLaw, August 2009