Cayc not starting!!

vw754

vorsprung Durch Technik
Changedfuel filter, and now not starting, fault on snap on machine is low fuel pressure, ive loosen the bolts on the injectors, only a trickle of fuel nothing much.... Any ideas please?
 

desertstorm

Moderator
Staff member
Moderator
VCDS Map User
I think on some diesel cars you need to prime the system again to get the air out by running the in tank pump. Had a quick look on Elsa Win.


Bleeding fuel system
Vorsicht.jpg
Caution
If components of the fuel system between the fuel tank and the high-pressure fuel pump are removed or renewed, the basic setting “Checking fuel system pressurisation pump” must be performed to bleed the fuel system.
Proceed as follows to fill fuel system with fuel:
– Connect a vehicle diagnostic tester.
– Switch on ignition.
– Select “Engine electronics” in vehicle self-diagnosis.
– Then select “Basic setting”.
– Select “Checking fuel system pressurisation pump” from the list.
– Press “Start” key: The fuel pump will start running.
– The fuel pump must run for approx. 1 minute to ensure that the high-pressure pump is filled with sufficient fuel.
– Press “Stop” key.
hinweis.gif
Note
To repeat basic setting, switch ignition off and on once. Then start basic setting again.
– Start engine after filling fuel system.
– Run engine at moderate speed for several minutes and then switch off.
– Check fuel system for leaks.
– Erase event memory.
– After completing the repair, road-test the vehicle. Accelerate with full throttle at least once. Then check the high-pressure section of the fuel system again for leaks.
hinweis.gif
Note
If there is any air left in the fuel system, the engine may switch to the backup mode ('emergency running' mode) during the road test. Switch off the engine and erase the event memory. Then continue the road test.
– Interrogate event memory.
 

vw754

vorsprung Durch Technik
I think on some diesel cars you need to prime the system again to get the air out by running the in tank pump. Had a quick look on Elsa Win.


Bleeding fuel system
Vorsicht.jpg
Caution
If components of the fuel system between the fuel tank and the high-pressure fuel pump are removed or renewed, the basic setting “Checking fuel system pressurisation pump” must be performed to bleed the fuel system.
Proceed as follows to fill fuel system with fuel:
– Connect a vehicle diagnostic tester.
– Switch on ignition.
– Select “Engine electronics” in vehicle self-diagnosis.
– Then select “Basic setting”.
– Select “Checking fuel system pressurisation pump” from the list.
– Press “Start” key: The fuel pump will start running.
– The fuel pump must run for approx. 1 minute to ensure that the high-pressure pump is filled with sufficient fuel.
– Press “Stop” key.
hinweis.gif
Note
To repeat basic setting, switch ignition off and on once. Then start basic setting again.
– Start engine after filling fuel system.
– Run engine at moderate speed for several minutes and then switch off.
– Check fuel system for leaks.
– Erase event memory.
– After completing the repair, road-test the vehicle. Accelerate with full throttle at least once. Then check the high-pressure section of the fuel system again for leaks.
hinweis.gif
Note
If there is any air left in the fuel system, the engine may switch to the backup mode ('emergency running' mode) during the road test. Switch off the engine and erase the event memory. Then continue the road test.
– Interrogate event memory.
THANKS.
 

Pie-eyedpiper

Registered User
Did you fill the fuel filter with fuel before putting it in?
 
Top