1.3 Ford KA Engine BAA 2006

[wojtekowski]

Hi all.
I've been having issues with my KA for a year now, its a 2006 MK1 BAA engine... (All replacement parts in this car are OEM or German made, so nothing cheap).
The KA misfires cyl. 3 and sometimes cyl. 1 (when issue first started, not anymore) a lot in higher RPM. Spark plugs changed, new cables, new coil pack, compression test very good, leaky valve cove fixed, fuel filter replaced.
I'm loosing my mind! 6 months ago the issue developed so far that made the car just completely undrivable, loss of power etc.
Recently went to a garage, they said they replaced the MAP sensor and it actually worked smoothly for a (short) time.
Now the issue is back and I'm starting to look for new cars
...But with so much money invested into this rocket ship I think I want to try again , I have two more years to complete my master engineer degree so money is tight right now.
So I think I'm going to go all the way to fix this issue.

Anyone had any similar issues, experiences, maybe some solutions?

[P2KKA]

Move the injectors around between cylinders and see if the misfire codes follow. Compression test you've already done probably excludes the potental for stuck/broken exhaust valve.

Most of the other suggestions you have already done like coil/leads etc.

[Moribund]

Do you get the engine light come on at high speed?. We have a similar problem with our Ka but only since having the cam belt changed

[wojtekowski]

Hi all.

Thanks for the suggestions. I got a little upset with the car. Issue found. One of the connectors was corroded and caused the issue. I also took out the injectors, cleaned them, put them back in. Turns out the garage gave me some bull.. as the injectors were covered in very old dirt - so no one cleaned them except from me a while back. While I was at it I cleaned all possible connectors I've managed to get my hands on.

However... The car has developed a new fault (again for like the 3rd time), the screen washer pump has died/gone out and no longer working. Anyone had any similar experience ? I'm thinking of either going to the scrapyard to get the original same pump maybe it'll last longer or add some sort of protection fuse. I predict that the voltage going into the pump peaks too high essentially breaking the pump motor. I'll try to post an update maybe it'll help someone in the near future

[wojtekowski]

Moribund said:

Do you get the engine light come on at high speed?. We have a similar problem with our Ka but only since having the cam belt changed

Yeah I've had this also, but the engine light came on mostly at lower speeds - so when starting off traffic lights etc. My cam belt is fine, however during the next oil change I think i'll try to replace it. The car seemed to be spitting fuel from time to time and essentially loss of power was visible. Once it happened when I was going around 100km/h (60mp/h) but this car is like an animal - it'll still get you to your destination even if it has no legs, hands or eyes.