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dan_c4rsa

Member

Registered: 12th Dec 06
Location: North Yorks Drives: MK3 Seat Cupra
User status: Offline

12th Dec 07 at 15:10

got the car back and fitted lambda makes no difference.

the cars really really boggy spluttery when starrt but when it hits 3000 revs its fine.

could the cams on standard timing just be overfuelling the engine way too much so when cold the engine wont spark it properly?

cheers

[Edited on 12-12-2007 by dan_c4rsa]

Simon_16v

Member

Registered: 14th Aug 06
Location: Yorkshire
User status: Offline

12th Dec 07 at 15:22

I would imagine that cams have nothin to do with fuelling. Just duration of valves etc.

Unless the cams are really wild

jimmy 2.1

Member

Registered: 17th Oct 05
Location: Shipley, West Yorkshire
User status: Offline

12th Dec 07 at 15:23

I've got cams in mine aswell as chipped ECU, and a 3 bar fuel regulator. I know mines over fuelling as i can smell it and have been told it blasts out a little soot when being driven hard. I've noticed on cold mornings mine runs as rough as hell! As in like its firing on 2 cylinders till it "clears its throat" kind of thing. I'm going to be changing my fpr for a standard 2.5 bar item to see if that helps.

dan_c4rsa

Member

Registered: 12th Dec 06
Location: North Yorks Drives: MK3 Seat Cupra
User status: Offline

12th Dec 07 at 17:13

yeh thats like mine when its cold. runs rough as HELL!!!!!

Am saving up to dial in cams and remappable ecu

Dave A

USER UNDER INVESTIGATION - DO NOT TRADE

Registered: 10th Dec 03
Location: County Durham
User status: Offline

12th Dec 07 at 18:14

in short, no they wont cause it to excessively overfuel as the duartion the injector is open for is controlled by the ecu and the pressure of the fuel is controlled by the standard FPR

dan_c4rsa

Member

Registered: 12th Dec 06
Location: North Yorks Drives: MK3 Seat Cupra
User status: Offline

12th Dec 07 at 18:25

i just dont get it then

taken some videos. you can hear the exhaust spitting

first is when its been left for half an hour

second is after a 20 mile drive or so.

http://s61.photobucket.com/albums/h61/Nailbed/?action=view&current=MOV01832.flv

http://s61.photobucket.com/albums/h61/Nailbed/?action=view&current=MOV01834.flv

edit - there is no misfire in the leads or anything though...

[Edited on 12-12-2007 by dan_c4rsa]

jimmy 2.1

Member

Registered: 17th Oct 05
Location: Shipley, West Yorkshire
User status: Offline

12th Dec 07 at 20:22

Mine sounds like the second vid when its first started up on a cold morning. It clears after 100 yards of driving down the street. I've an idea what mine is but not on yours unfortunately

dan_c4rsa

Member

Registered: 12th Dec 06
Location: North Yorks Drives: MK3 Seat Cupra
User status: Offline

12th Dec 07 at 20:38

well just been out to go for a drive to calm the nerves lol and the car hardly even satarts just like before unless i keep my foot down for five minutes. back to square one again.

found these two wires (red and black) coming from the ecu in a thick shielding.
ideas?