C4 cactus 1.2 automatic clogged gearbox

[wrsdz]

Hey everyone,

I'm hoping someone here might have an idea on how to solve an issue I'm having with my **2015 Citroën C4 Cactus 1.2 automatic**. Before diving in, here’s a quick list of the parts that have already been replaced:

- Complete timing (distribution) set
- Oil filter
- Air filter
- Spark plugs
- Gearbox
-clutch

The problem is that while accelerating (pressing the gas pedal), the engine feels like it’s getting clogged, almost as if not enough fuel or air is reaching the engine. What’s strange is that in **neutral**, the engine revs up without any issues, and it can reach very high RPMs with no problem at all.

We hooked up the car to a diagnostic tool, did a test drive, and the fuel injection appears to be working perfectly. However, it’s throwing up the following error code: C1651 86

Does anyone have any suggestions on what to check next? I’d really appreciate any inputs!

Ps. Where I can find fuel filter is this car ?

Thanks in advance!
**Greetings**

.

[HansH]

This might help: viewtopic.php?t=76170