Re: Rebuilt my WUR - Saab Saab Model 99 Bulletin Board - Saabnet.com
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Re: Rebuilt my WUR
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Posted by LJB [Email] (more from LJB) on Thu, 18 Mar 2021 15:32:04 Share Post by Email
In Reply to: Re: Rebuilt my WUR, Gary Stottler [Profile/Gallery] , Thu, 18 Mar 2021 05:41:20
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This is a good point. I did a bunch of other checks first.

I replaced the fuel filter as the very first step.

I checked all the vacuum lines and found a vacuum leak at the Vacuum Impulse Contact. Fixing that helped quite a bit, but the car was still barely running.

Before tearing into the WUR, I checked the cold start valve for spray and leakedown. I checked the Vacuum Impulse Contact and Cold Start Valve by putting a light in series with the valve; that was kinda cool watching the light flash when you blip the throttle (which I was doing a lot to keep the car running). I checked the injectors for spray and leakdown. I pulled a spark plug and checked condition and gap, both checked out. I checked timing, cap rotor, and wires.

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