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Registered
Join Date: Feb 2005
Location: Oklahoma
Posts: 37
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WUR adjustment
Just replaced the WUR...car starts..but idles like a small roller coaster, you can hear it bog down a little then pick back up, there is also an intermitant pop from the exhaust...problem is?
Oh...88 930 3.3. Help me out here guys will ya |
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01-21-2006, 02:28 PM
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Join Date: Dec 2004
Location: Novato, CA
Posts: 3,064
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Mixture may be slightly rich. Does this condition go away when the car is warmed up? Have you tested fuel pressures?
ianc
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BMW 135i. Nice. Fast. But no 911... "I will tell you there is a big difference between driving money and driving blood, sweat and tears." - PorscheGuy79 |
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01-21-2006, 03:08 PM
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Join Date: Feb 2005
Location: Oklahoma
Posts: 37
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Problem does not go away when warm. And honestly...I have no idea how to test the pressures..any help would be greatly appreciated
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01-21-2006, 07:52 PM
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Join Date: Dec 2004
Location: Novato, CA
Posts: 3,064
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If the problem doesn't go away when warm, it's most likely not the WUR. I would bring the thing to a shop that has an exhaust gas analyzer and have them set the mixture for you. If you want to dink with it yourself a little, get a 3 mm allen screw and try turning the mixture screw out (lean out) by 1\16 turn increments. the mixture screw is through a small hole between the fuel distributor body and the rubber intake boot. A search here will turn up lots of info. HTH,
ianc
__________________
BMW 135i. Nice. Fast. But no 911... "I will tell you there is a big difference between driving money and driving blood, sweat and tears." - PorscheGuy79 |
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01-21-2006, 08:17 PM
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Join Date: Feb 2005
Location: Oklahoma
Posts: 37
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I have already tried adjusting rich to lean ...the problem remains at both extremes.
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01-21-2006, 08:38 PM
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Join Date: Dec 2004
Location: Novato, CA
Posts: 3,064
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I'd strongly advise checking your fuel pressures. This is the first step in baselining the system. You'll need a fuel pressure gauge to test. I believe Pelican carries them. For info on how to test pressures and other CIS stuff, check Jim Williams' excellent site at http://members.rennlist.com/jimwms/CIS/CIShome.html.
ianc
__________________
BMW 135i. Nice. Fast. But no 911... "I will tell you there is a big difference between driving money and driving blood, sweat and tears." - PorscheGuy79 |
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01-21-2006, 09:22 PM
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Registered
Join Date: Dec 2002
Location: Redondo Beach, CA
Posts: 542
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Mmmm...
WHY did you replace the WUR? Were you having this problem and tried replacing the WUR to rectify it or were you trying to fix another problem and this is a NEW issue?
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-Todd '89 930, '97 TLC (Toyota Land Cruiser), '96 T-100pick-em-up '95 BMW R100 GSPD (gone but not forgotten), '07 BMW R1200GSA |
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01-22-2006, 08:48 AM
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Join Date: Feb 2005
Location: Oklahoma
Posts: 37
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My mech told me to replace the WUR without an inspection. The car was having a backfire problem when boosting...low and behold replacing it did no good so I put new cap, rotor, wires and plugs in it. The plugs that were in the car were the wrong ones and were black as night. It now has the proper plugs in it. WD3p0 I believe ..could be off on the # but they are the right ones..and I did make sure of gapping before I put them in
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01-22-2006, 09:54 AM
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Banned
Join Date: Jan 2006
Location: Chicago
Posts: 570
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seems like I'm having same problem. Car starts fine and idles right at 950-1000 on a cold start. After engines warmed up (5-10min) car won't idle right, and begins hunting only to end up dropping the rpms too low, causing red engine light to come on then dying.
Wur? Co? Idle? ideas? |
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03-12-2006, 05:03 PM
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