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1985 4000S Quattro running poorly

Old 09-01-2011, 08:25 PM
  #1  
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Default 1985 4000S Quattro running poorly

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?
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Old 10-07-2011, 09:42 AM
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check your fuel pump or filter or fuel pressure regulator and fuel injectors
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Old 10-07-2011, 09:43 AM
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also check your plugs and cap and wires
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Old 11-21-2012, 02:12 AM
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i too would check the presure reg.
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Old 11-21-2012, 07:21 PM
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Originally Posted by skiptony View Post
i too would check the presure reg.
Check the all hoses on intake side and possibly, vacuum leaks at somewhere.
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