Opel Vectra 2000 201000 miles
When cold, the vehicle fails when starting the engine. It's been two years since I changed the injection pump and, due to the appearance of this failure, I have recently replaced the check or one-way valve, as well as bushings, injection joints and fuel filter. I've even installed a primer and I really do not know what else to do. When warm, the engine starts without a problem. If anyone can give me a hand, I will be really thankful.