My 2007 X-Type just stopped starting. It cranks well but will not fire, not even a sputter. The check engine light is on but the only code is P1111.
(P1111 means all is OK.) The tank is full. The day before it ran OK. What could be wrong? Where should I start looking? I am using an
Autel Autolink AL519 to read the codes.

Thanks for any help.

 

With the ignition ON, what is the fuel pressure before engaging the starter motor? It should be around 3 bar.

 

I will check that.

Thanks.

 

There are many things it could be, I personally suggest Chrisfixes video,
https://youtu.be/PNhuDCVIydwGood luck-Andrew

 

That video is great! While looking around I found evidence of mice nests. One place is near the wires that connect to the
sensor on the intake manifold at the back about 4 inches to the left of the vacuum tap for the power break unit. The wires don't
appear to be eaten through but there is some teeth damage to the insulation.

Does the check engine light go out before the engine starts? I can't remember and now I can't check.

Thanks.

 

I pulled a plug and checked for spark and that looks OK.

Checking the fuel pressure seems to be a problem. On earlier models there was a Schrader valve
that could be used with a pressure gauge but not on my 2007. How is that done on the later models?

I see that the fuel line connection to the fuel rail uses a curious connector that engages with a coil
spring in a ring. I think that if I can force the spring back I can disconnect the fuel line or the
fuel pressure sensor. What is the trick to this connection? These two connectors are on the
left end of the fuel rail when facing the engine.

 

The fuel rail connector requires a special tool to release the quick connection spring lock such as this listing on eBay:

https://www.ebay.com/itm/3pc-Quick-D...UAAOSw~y9ZJ9jC

Another way to check the fuel pressure on a later X400 is to use a smart phone with the Torque app to communicate directly with the vehicle PCM through the OBD port via a Bluetooth adapter.

The fuel pressure with the ignition in the ON position prior to engaging the starter motor should be around 3 bar.

 

Thanks, those tools would do it. What I did was kluge something up. I found a plastic pipe with 1/2 inch inner diameter.
I cut off a 3/4 inch section and split it into 2 pieces. I could press the 2 pieces into the connection and force the spring
back. Then the connection pulled apart.

I first pulled the fuel temperature sensor thinking that I could get fuel from that port but it does not connect into the
actual fuel flow. Next I separated the fuel line from the rail and put the fuel line in a can. When I tried the engine
gas flowed into the can. But curiously, the engine sputtered. It had previously not done that!

I connected the fuel line back and the engine started and ran normally.

This is a deeply unsatisfying outcome: the car runs but I did not find the problem. Now I will worry that it will come back.

 

It appears to have a failing fuel pump.

Has the fuel filter been replaced? A clogged filter can also cause erratic fuel supply.

 

I am going to replace the fuel filter and hope that it is not the fuel pump.
The car has 93K miles and it should not be worn out.