Technical Ducato x224 2,8 jtd engine dies after 5-10 seconds. first start of day.Start perfectly after.

[Mickerorsvik]

Hi, I have a problem with my motorhome. The engine dies after 5-10 seconds, sometimes longer. This occurs after standing overnight or for a couple of hours.
Today, I need to have two tries, having been standing for 14 days. The problem is getting worse. Today I cleaned the fuel filter, a minimal amount of water and dirt.
Does anybody have an idea what to look at or try?

Br Micke

 

[ceecff]

May be electrical or air leak.

 

[diego74]

This can be due to many reasons, something you can test by yourself is when you turn the key to the ON possition you should hear the fuel pump working under the drivers' seat (there is a pannel you can remove and see the low pressure pump), turn it off, wait a couple of seconds (30 maybe) and turn the key to the ON possition again and see if you hear it working again, by doing this you are increasing the diesel pressure in the low-pressure channel in case that the initial pump is not enough to reach the expected 5 bars, perhaps the low pressure pump is not working as expected. If this does not help perhaps a scanner to check the realtime values when the issue occurs can be of help, I use a cheap ELM327 BT interface and the AlfaOBD app in my cellphone.

Hope this helps,
Diego.

 

[Communicator]

Hi, I have a problem with my motorhome. The engine dies after 5-10 seconds, sometimes longer. This occurs after standing overnight or for a couple of hours.
Today, I need to have two tries, having been standing for 14 days. The problem is getting worse. Today I cleaned the fuel filter, a minimal amount of water and dirt.
Does anybody have an idea what to look at or try?

Br Micke

Does the engine only fail immediately after starting, or does it stop other times?

Have you checked for fault codes?

On the fuel supply side, is the strainer on the in tank fuel lift pump clean.

I was wondering about fuel rail pressure, or pressure sensor. As engine starts, it can't be the camshaft sensor, and crankshaft sensor is more likely to fail when hot.

Do inspect all main electrical connections, including chassis earth near RHS engine mounting, and the engine earth at starter stud on clutch housing.

@jackwhoo Any thoughts?

 

[jackwhoo]

Which fuel filter "cleaned"?

Possibly air in fuel?

Suggest renew replaceable fuel filter and it's seal rings with good brand and check in tank fuel pick up strainer.