1985 4000S Quattro running poorly

notoriousEIC · 09-01-2011, 07:25 PM

Hello everyone. I'm hoping you can help me out. I've got an '85 4000S Quattro that's been running poorly. When it's cold it is fine and runs normally. When I go somewhere, though, and it sits for a bit (like 30 minutes or so) it runs rough and hesitates when I start it back up and runs that way for a while. It's done this the last two times I've gone for a drive, the second time worse than the first. Any ideas?

hayes22 · 10-07-2011, 08:42 AM

check your fuel pump or filter or fuel pressure regulator and fuel injectors

hayes22 · 10-07-2011, 08:43 AM

also check your plugs and cap and wires

skiptony · 11-21-2012, 01:12 AM

i too would check the presure reg.

x19 · 11-21-2012, 06:21 PM

Quote:

Originally Posted by skiptony

i too would check the presure reg.

Check the all hoses on intake side and possibly, vacuum leaks at somewhere.

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10-07-2011, 08:42 AM	#2
hayes22 Audiworld Junior Member Garage is empty, add now Join Date: Apr 2008 Location: Albany Oregon Posts: 81	check your fuel pump or filter or fuel pressure regulator and fuel injectors

10-07-2011, 08:43 AM	#3
hayes22 Audiworld Junior Member Garage is empty, add now Join Date: Apr 2008 Location: Albany Oregon Posts: 81	also check your plugs and cap and wires

11-21-2012, 01:12 AM	#4
skiptony AudiWorld Newcomer Garage is empty, add now Join Date: Nov 2012 Location: va. Posts: 1	i too would check the presure reg.

11-21-2012, 06:21 PM
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