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Seat Leon Ecomotive 1.6 CAYC 2010 - Hard starting when left over weekend - Fixed #

Posted by Liam Hall on October 11, 2013, 9:36 pm

Year of Manufacture *: 2010
Engine Size and Code *: 1.6 CAYC
( Optional ) Scanner Used: Solus Pro

Hi all,
Looking for some advice on this one.
This is my father in laws car and he has the following issue;
When leaving the car more than 24hrs, lets say over the weekend it is very difficult to start, it will fire and cough and splutter but not run properly.

I have looked at live data, and the rail pressure ramps up quickly on turnover but doesnt match desired.
I have looked at the low pressure supply, this has an in tank pump.
What I have noticed is that when running the pump with the scanner it seems to have reasonable flow, but I did pop off the return and only a dribble is coming back to the tank when running the pump with the scanner.
Does anyone know what pressure the in tank pump should put out?
I think it is struggling to pump the fuel through the filter, so cannot properly prime the system for a cold start.
The car starts easily if used every day.
There are no fault codes logged.

Thanks in advance.

Liam.

Re: Seat Leon Ecomotive 1.6 CAYC 2010 - Hard starting when left over weekend #

Posted by David Davies <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT5218' width='330' height='300' border=0 style='border:none;'> on October 12, 2013, 3:37 pm, in reply to "Seat Leon Ecomotive 1.6 CAYC 2010 - Hard starting when left over weekend #"
David Davies

The low pressure pump should deliver minimum 600ml in 30 seconds,measured at the input to the high pressure pump.If low check for restricted filter or crushed fuel lines or low voltage to LP pump.

Re: Seat Leon Ecomotive 1.6 CAYC 2010 - Hard starting when left over weekend #

Posted by Liam Hall <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3033' width='330' height='300' border=0 style='border:none;'> on October 14, 2013, 6:09 pm, in reply to "Re: Seat Leon Ecomotive 1.6 CAYC 2010 - Hard starting when left over weekend #"
Liam Hall

Thanks for the info.
I have popped off the pipe at the hp pump and ran the in tank pump, I get a tiny dribble over 60 seconds never mind 600ml!!

I took the pump out and bench tested it, it does pump diesel however one thing I noticed was if I restricted the outlet the pump would not labour but just created bubbles from around the pump body.
I think the pump is suspect.

One other question, if anyone has the answer;

the filter housing is UFI type, that takes a mahle KX220 or equivalent.
When you open up the filter housing (had a look in case of restriction) there appears to be some sort of pressure relief valve affair, does anyone know?
Just to clarify I am getting fuel at the filter but it doesnt make it to the hp pump.
I would expect the pump to be capable of pushing the fuel through the filter?

Kind regards,

Liam.

Re: Seat Leon Ecomotive 1.6 CAYC 2010 - Hard starting when left over weekend #

Posted by Mark Carter <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1428' width='330' height='300' border=0 style='border:none;'> on October 14, 2013, 6:29 pm, in reply to "Re: Seat Leon Ecomotive 1.6 CAYC 2010 - Hard starting when left over weekend #"
Mark Carter

So would I Liam, what system is the vehicle running?

Mark

Modern cars, Its all wizardry and witchcraft

Re: Seat Leon Ecomotive 1.6 CAYC 2010 - Hard starting when left over weekend #

Posted by Jon Morgan <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3190' width='330' height='300' border=0 style='border:none;'> on October 14, 2013, 9:20 pm, in reply to "Re: Seat Leon Ecomotive 1.6 CAYC 2010 - Hard starting when left over weekend #"
Jonathan Morgan

I think I may be right in thinking this is the Continental Teves / Simos PCR2 System.

Fixed #

Posted by Liam Hall on October 18, 2013, 9:55 pm, in reply to "Re: Seat Leon Ecomotive 1.6 CAYC 2010 - Hard starting when left over weekend #"
Edited by board administrator October 22, 2013, 2:30 pm

Hi all, Sorry for the delay in posting an update.

I am marking this as fixed, after various tests and cold starts etc I found the pipes from the filter on the wrong unions.
Very bizarre as this has done in excess of 15000 miles set up like this - no one but me has worked on the car and I have never removed the pipes before!

Another one put to bed!

Thanks for the input, all greatly appreciated.

Liam.

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