Fabiano

Hello, Maybe this video can help you (although the language is Portuguese): https://www.youtube.com/watch?v=HqBhNeGkyjc

How can this be verified? Besides measuring fuel pressure, is there something else about fuel pump that need to be checked?

Thanks for your reply! Yes, I tried that a couple of times, but it makes no difference, the slow start occurs anyway... Except, of course, in the first start of the day.

Hello all! I have a 2010 Ford Fusion SEL 3.0 AWD and I am just over three months with a slow start issue that is driving me crazy. The car was serviced in June/19 and had all of its fuel injectors replaced. It was experiencing both idle and normal driving ignition failures because one of the injectors was “dripping” fuel. The other injectors were also experiencing a small leak in the middle of the part. The important thing is that all misfires were resolved with this maintenance. However, shortly after that, the slow start issue began. The first start of the day occurs without any problem. Usually the car stays stationary for at least 12 hours overnight: https://youtu.be/FpNBqUAWUNg Let's say the car runs for a few kilometers and engine reaches normal operating temperature: if it is stopped and started immediately afterwards, it also starts without problems. But if it stays stationary for at least 40 minutes, the next start will be a slow one: https://youtu.be/Sa7Vjx0Xkng (<= here the car was driven for four kilometers and then stood stationary for an hour and fifty minutes) This problem can be repeated several times a day, as long as the car remains stationary for at least 40 minutes. Ambient temperature does not influence the result, the problem has already occurred under an ambient temperature range of 15 to 35 ° C (59 to 95 ° F): https://youtu.be/6F05L2Iw_Pc (<= here the car was driven for twenty-two kilometers and then stood stationary for five and a half hours) PCM has only one DTC: P0430 (Catalyst System Efficiency Below Threshold - Bank 2). I believe this error could be a consequence and not the cause of the issue… Last month the car battery died, it had less than two years of use. Its brand is a recognizably good quality brand here in Brazil, so I believe it died from excessive wear during the many slow engine starts. So, right now the car is in a second shop because the first one (which replaced the fuel injectors) could not diagnose the problem. The guys of current shop said they measured the pressure of the fuel pump and that it is reaching 4 bar even during the slow start. So we are running out of ideas… I apologize for the Portuguese audio in the videos, the important is how the engine sounds. Any help or tip would be appreciated! Thanks in advance.