Injection pump problems

Injection pump: It can only be found in Diesel cars. It pumps fuel at a high pressure into the injectors.
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Starting when cold

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.
johnjohnny from United States 8 years ago  
JO
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