Colleagues, does anyone have a problem with starting the diesel engine the day after a long journey? (The engine is 1.6L.)

Mainly, after a long journey, the engine takes 2-3 seconds of cranking before starting the next day. The battery is in good condition.

If, before starting the engine with the starter, I turn the key from off to first level key twice in a row - back to off and again to fırst level key and ignitaon position - the engine starts quickly.

In other words, if the fuel pump initially operates twice, filling the fuel line, the engine starts quickly.

I changed the fuel filter 10,000 km ago, so I don't think it's the filter.

It seems that after a long journey, when the engine shuts off, air is entering the fuel supply line or some of the fuel is returning to the tank.

Any ideas?

Any comment ? 

 

1 hour ago, Levcho2 said:

Any comment ?

Excess fuel is returned to the tank during and after short journeys too.

4 hours ago, Paws4Thot said:

Excess fuel is returned to the tank during and after short journeys too.

What is the solution?

45 minutes ago, Levcho2 said:

What is the solution?

Find out what the problem actually is instead of wasting bandwidth describing normal function of the vehicle.

Could you give more concrete guidance please. Which part should I check?

Thank you so much for commnets.

On 05/06/2023 at 14:09, Levcho2 said:

Any ideas?

 

16 hours ago, Paws4Thot said:

normal function of the vehicle.

 

A few years since I had a diesel Octavia, which was a 1.9pd, but I think I remember it had a similar feature to my existing 1.4tsi Octavia

 

When I unlock the car and open the driver's door I will hear the sound of what I think is the fuel pump priming itself for nearly 2 seconds.

Does yours do this? IF not then the action of turning on the ignition twice might be replacing the 'missing' priming pump.

 

If you do hear the pump sound opening the door then I've got nothing else to offer.

 

When reporting a problem it is useful for others if you give as much detail as possible eg, year of car, mileage, when did the problem start occurring, was there any coincident event such as changing the fuel filter or a regular service, do you do your own servicing or use an independant specialist mechanic or dealer, have you raised the problem with a dealer if still in warranty and their response, what's your long drive distance, what's your short drive distance etc etc.

Edited 12 June, 20232 yr by Gerrycan

35 minutes ago, Gerrycan said:

A few years since I had a diesel Octavia, which was a 1.9pd, but I think I remember it had a similar feature to my existing 1.4tsi Octavia

 

When I unlock the car and open the driver's door I will hear the sound of what I think is the fuel pump priming itself for nearly 2 seconds.

Does yours do this? IF not then the action of turning on the ignition twice might be replacing the 'missing' priming pump.

 

If you do hear the pump sound opening the door then I've got nothing else to offer.

 

When reporting a problem it is useful for others if you give as much detail as possible eg, year of car, mileage, when did the problem start occurring, was there any coincident event such as changing the fuel filter or a regular service, do you do your own servicing or use an independant specialist mechanic or dealer, have you raised the problem with a dealer if still in warranty and their response, what's your long drive distance, what's your short drive distance etc etc.

You are right.
This error started 3 ago.
The car has passed 50000 km. I am the first owner. The car was purchased new in 2013.
When the door is unlocked->opened, there is no pump sound or any other sound. There had never been such a sound before.
I changed the fuel filter myself, 10k km ago. Filter brand Bosch.

1 hour ago, Levcho2 said:

This error started 3 ago.

I changed the fuel filter myself, 10k km ago.

 

3 years ago?

2 hours ago, Levcho2 said:

You are right.
This error started 3 ago.
The car has passed 50000 km. I am the first owner. The car was purchased new in 2013.
When the door is unlocked->opened, there is no pump sound or any other sound. There had never been such a sound before.
I changed the fuel filter myself, 10k km ago. Filter brand Bosch.

I also do not hear any pump noise when unlocking.

Guys any comment?