Engine stumbles under acceleration as if missing?

2018 FORD ECOSPORT
39,000 MILES • 2.0L • 4 CYL • 4WD • AUTOMATIC
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MAXIE316
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Engine stumbles under acceleration as if missing.
I suspect high pressure fuel pump is low putting out245-290psi at idle 1100 at 2000rpm in park. What should the high and low pressures be. These numbers are from scan tool
Mar 1, 2026 at 10:35 AM
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STRAILER
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Hello

The Ford direct injection systems typically do not idle as low as 245-290 PSI. That is low. I would scan for codes to see if you have

P0087 (rail pressure too low)
P0088
P0191
P228C

Can you confirm the car has 39k on the odometer please? Also, can you tell me if you have replaced the spark plugs or ignition coils, these can fail and cause a stumble misfire. Lets start with the scan here is a video that can help

https://www.youtube.com/watch?v=LBCpCWEFnTg

Please let us know what happens.
Mar 2, 2026 at 8:50 AM
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MAXIE316
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No codes or check engine light. Plugs and coils were changed, yes only 39k miles. Going to get a fuel pressure gauge for the low pressure side. Hi pressure came from innova scan tool.
Mar 2, 2026 at 9:21 AM
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STRAILER
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Yup, this leaves the high pressure pump, a little premature failure but you never know, please let me know if that fixes it, Ken
Mar 3, 2026 at 9:12 AM
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MAXIE316
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Put a new high pressure pump on idle pressure now 500-600 psi.
Drives better. These pumps are expensive so be sure that's the problem.
Mar 10, 2026 at 2:55 PM
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STRAILER
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Yep they are, glad it fixed the problem, please use 2CarPros anytime we are here to help.
Mar 11, 2026 at 8:18 AM
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MAXIE316
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Thanks I will keep you in mind
Mar 11, 2026 at 2:25 PM