Stuttering at Spa?

**cantfind1** · 15-10-2010, 02:19 PM

Question for all of you that have done Spa.

Coming out of Stavelot and running along Courbe Paul Frere towards blanchimont in 4th gear foot flat to the floor the car is stuttering, change into 5th foot flat to floor and it will then hesitate again.

Only doing it on this particular stretch?

I was thinking fuel starvation but with just under half a tank i was still getting it to occur occasionally.

Any thoughts?? anyone else experienced this?

_Nathan_ · 15-10-2010, 02:56 PM

I got that in exactly that place, assume was fuel starvation, with me went away if I filled up.

**shimmy** · 15-10-2010, 04:39 PM

Quote:

Originally Posted by _Nathan_

I got that in exactly that place, assume was fuel starvation, with me went away if I filled up.

had it once there (but only when car was older)

also at Sears (Snetterton) and Coppice (Donny) but once again only when car was over 50k miles

_Nathan_ · 15-10-2010, 05:11 PM

My lovely motor car only has 41k on it now :-)

**cantfind1** · 15-10-2010, 05:24 PM

Ah good to know, well not good, but at least its a common fault.

I have already replaced my fuel pump, filter and pressure regulator, so I think it s time to look for some sort of upgraded pump.

Seems the OEM one, even when new, is not up to the job, must be something to do with long sweeping turns?

**shimmy** · 15-10-2010, 05:36 PM

Quote:

Originally Posted by _Nathan_

My lovely motor car only has 41k on it now :-)

ill tel you what "my motor" has on Tuesday

_Nathan_ · 15-10-2010, 05:46 PM

Cantfind1 - consider using the oem as a riser to a litre swirl pot then a proper pump from there.

You clocking it then shim

83SY · 10-02-2013, 01:52 PM

Quote:

Originally Posted by _Nathan_

I got that in exactly that place, assume was fuel starvation, with me went away if I filled up.

+1 keep it min 3/4 tank

ac427 · 13-08-2020, 11:00 PM

What is the recommended pump these days?

Has anyone used an HRC fuel pump?

Is the Bosch 044 too large to fit?

**Mike R** · 17-08-2020, 10:16 AM

Quote:

Originally Posted by ac427

What is the recommended pump these days?

Has anyone used an HRC fuel pump?

Is the Bosch 044 too large to fit?

The 044 is an external pump, the CSL uses an internal pump.

You would have to make a "surge tank" that the OEM pump feeds to and the the 044 takes the fuel from the surge tank to the fuel rail.....

15-10-2010, 02:19 PM	#1
cantfind1 S5, Sport Off, DSC M-track Join Date: Oct 2009 Location: Sydney Australia Posts: 675 Casino cash: $6490	Stuttering at Spa? Question for all of you that have done Spa. Coming out of Stavelot and running along Courbe Paul Frere towards blanchimont in 4th gear foot flat to the floor the car is stuttering, change into 5th foot flat to floor and it will then hesitate again. Only doing it on this particular stretch? I was thinking fuel starvation but with just under half a tank i was still getting it to occur occasionally. Any thoughts?? anyone else experienced this?

15-10-2010, 02:56 PM	#2
_Nathan_ Driving it like I nicked it Join Date: Sep 2008 Posts: 2,099 Casino cash: $13060	I got that in exactly that place, assume was fuel starvation, with me went away if I filled up. __________________ Nathan

15-10-2010, 05:11 PM	#4
_Nathan_ Driving it like I nicked it Join Date: Sep 2008 Posts: 2,099 Casino cash: $13060	My lovely motor car only has 41k on it now :-) __________________ Nathan

15-10-2010, 05:46 PM	#7
_Nathan_ Driving it like I nicked it Join Date: Sep 2008 Posts: 2,099 Casino cash: $13060	Cantfind1 - consider using the oem as a riser to a litre swirl pot then a proper pump from there. You clocking it then shim __________________ Nathan

15-10-2010, 05:24 PM	#5
cantfind1 S5, Sport Off, DSC M-track Join Date: Oct 2009 Location: Sydney Australia Posts: 675 Casino cash: $6490	Ah good to know, well not good, but at least its a common fault. I have already replaced my fuel pump, filter and pressure regulator, so I think it s time to look for some sort of upgraded pump. Seems the OEM one, even when new, is not up to the job, must be something to do with long sweeping turns?

13-08-2020, 11:00 PM	#9
ac427 S2 - Picking it up Join Date: Feb 2011 Posts: 71 Casino cash: $977	What is the recommended pump these days? Has anyone used an HRC fuel pump? Is the Bosch 044 too large to fit?