faulty parts??? - Page 2

jack1 · 09-08-11, 10:48 PM

well swapped them around tonight and car would not start at all so swapped them back and started first thing,,left it tickin over for 5/10 mins and then drove it around the block twice and when i gave it some welly it conked (very same as the night before) ,,,,when left for a while it will start again ,,,am i lookin in the wrong place or of it was the wrong pump for the car would this happen ,its a bosch and the part number ends with '125'

Phil Payne · 10-08-11, 05:15 AM

I'm just wondering if this is 'another one'. I've had three cars in the last two weeks with the cold start valve and control pressure regulator lines swapped.

Check the fuel line from the cold start valve. It should go to the 'piggy back' union on the metering head. I'm going to see a WR in the next couple of hours, so I'll photograph the lines and put the pciture up.

Micky · 10-08-11, 06:13 AM

Just check the part number on the pump is the right one .there are loads of pumps that will fit but different pressures and non return valves.

http://www.ebay.co.uk/itm/Injection-...item2c51c06c53

jack1 · 10-08-11, 10:21 PM

the code on the pump bosch 0580464125 ,,,, which i think is right for the car

jack1 · 11-08-11, 09:47 PM

from what i can see on the net the right pump is fitted,,,, as for the cold start it does go the union on the back of the metering head

jack1 · 12-08-11, 09:38 PM

have the car running but its idling to low ,,would the idle valve not working the german guy mentioned cause this to happen?? adjusting the air screw has no effect or adjusting the fuel does'nt either ,,, my exhaust is blowing in 2 places would it effect the idle?

missfire · 12-08-11, 11:52 PM

Quote:

Originally Posted by jack1

,,would the idle valve not working the german guy mentioned cause this to happen??

yes it would! you can test the effect on a good one by unplugging it, same kind of result if you pull the dipstick out.
the 'air screw' bit, just allows a little to bypass the throttle valve i think.

Phil Payne · 13-08-11, 12:09 AM

Quote:

Originally Posted by jack1

.. as for the cold start it does go the union on the back of the metering head

OK - here's a snap of a WR metering head I took yesterday for you. The cold start line is on the far left and goes to the 'piggy back' union on the metering head:

http://www.isham-research.co.uk/quat...ering-head.jpg

jack1 · 13-08-11, 09:05 PM

yep looks right ,noticed when i pull no 4 and 5 cap from the spark plugs theres no difference but if i pull 1,2 or 3 it will conk out

09-08-11, 10:48 PM	#11
jack1 4 ring whore! Classic Audi Club Member Join Date: Apr 2009 Posts: 2,319	well swapped them around tonight and car would not start at all so swapped them back and started first thing,,left it tickin over for 5/10 mins and then drove it around the block twice and when i gave it some welly it conked (very same as the night before) ,,,,when left for a while it will start again ,,,am i lookin in the wrong place or of it was the wrong pump for the car would this happen ,its a bosch and the part number ends with '125'

10-08-11, 05:15 AM	#12
Phil Payne Banned Join Date: May 2010 Location: Sheffield Posts: 1,809	I'm just wondering if this is 'another one'. I've had three cars in the last two weeks with the cold start valve and control pressure regulator lines swapped. Check the fuel line from the cold start valve. It should go to the 'piggy back' union on the metering head. I'm going to see a WR in the next couple of hours, so I'll photograph the lines and put the pciture up.

10-08-11, 06:13 AM	#13
Micky Mr Fifty Thousand! Classic Audi Club Member Join Date: Apr 2008 Location: Birmingham Posts: 8,738	Just check the part number on the pump is the right one .there are loads of pumps that will fit but different pressures and non return valves. http://www.ebay.co.uk/itm/Injection-...item2c51c06c53

10-08-11, 10:21 PM	#14
jack1 4 ring whore! Classic Audi Club Member Join Date: Apr 2009 Posts: 2,319	the code on the pump bosch 0580464125 ,,,, which i think is right for the car

11-08-11, 09:47 PM	#15
jack1 4 ring whore! Classic Audi Club Member Join Date: Apr 2009 Posts: 2,319	from what i can see on the net the right pump is fitted,,,, as for the cold start it does go the union on the back of the metering head

12-08-11, 09:38 PM	#16
jack1 4 ring whore! Classic Audi Club Member Join Date: Apr 2009 Posts: 2,319	have the car running but its idling to low ,,would the idle valve not working the german guy mentioned cause this to happen?? adjusting the air screw has no effect or adjusting the fuel does'nt either ,,, my exhaust is blowing in 2 places would it effect the idle?

13-08-11, 09:05 PM	#19
jack1 4 ring whore! Classic Audi Club Member Join Date: Apr 2009 Posts: 2,319	yep looks right ,noticed when i pull no 4 and 5 cap from the spark plugs theres no difference but if i pull 1,2 or 3 it will conk out