here is a pic of the "rebuilt" WUR that the shop installed just before I purchased the car. I just removed it. Note the marks on the pressed in fitting. Seems that in an earlier life the thing had been pounded on...perhaps why the pressures are both now too low. Short of trying to have that plug pushed back up, I am back to my question about taking it apart and trying to adjust the bi-metallic bar.

http://forums.pelicanparts.com/uploa...1758998308.jpg

If the WUR was rebuilt recently, the control fuel pressure should be closed to specification. The pressure numbers are out of spec. But your biggest problem is the residual pressure loss.

The second link you posted about hot start is more confusing to beginners like you because it added culprits for a non-running motor (defective fuel distributor). Your car is an SC and the WUR will not cause residual pressure loss. Why? Not everything you read in the Internet is TRUE.

Tony

Agreed! Searching for CIS truth is my mission...

I did one other thing since my last post...removed the FA. I disconnected the bottom hose first. LOTS (repeat LOTS) of fuel poured out of the bottom connection. I then removed the two top connections in order to remove it and there was still fuel that came out of the top (mostly from the outer opening not the centre one).

I read one of your earlier helpful posts for someone else and learned some fuel from the bottom is normal/OK. But as I said a lot poured out. Does this imply I have found a failed FA?

Re the WUR...yes rebuilt, but I don't know the origins of it or by whom, and clearly I am getting the wrong readings per my initial test and as per the photo you can it has been hammered at before. Tony can I open it and try to fix this one or just send this away as a core and hope for more success with another "rebuild"?

CIS Troubleshooting………..
 

Now that you have the fuel accumulator removed from you car, test it! Do a pressure test using the top upper ports. I have posted in this forum a simple way to test the FA by placing it a glass of water and partially submerged the bottom. Use your thumb to cover one of the upper ports and blow air into the other top port. I use different methods successfully to test a ruptured FA diaphragm:

Time to Take Your Turn………..
 

Flyboy,

This a good time to start learning to troubleshoot your CIS. Now that you have removed the FA from the car, test it. There are several ways to do it. One of my favorite procedure is to partially submerge the FA in a glass of water and blow air into one of the upper ports and plugging the other upper port using my thumb. Take a deep breath and blow air into the port.

Other procedures:
1). Use a bicycle foot pump.
2). Use a battery operated tire pump.
3). Use air compressor.
4). If you know how to test run your FP, install the FA and connect the 2 upper ports. Leave the bottom port detach to observe the fuel flow (if any). Place disconnected return line from the bottom port in a collection vessel. Test run the FP no longer than 2 sec. If the FA is good, there will be no fuel flow at the bottom port. If it is bad (ruptured diaphragm) fuel would be dripping out.

Do not do test #4 if you feel uncomfortable. That’s OK.

You need a CIS pressure tester kit if you like to investigate your WUR and the skill to manually operate your FP. If you are NOT ready, that’s OK and we will walk you step by step to get to the next level.

Tony

Yes I have the CIS test kit that is what allowed me to get my initial readings to indicate trouble with my WUR. I will try the water test approach. Top ports full of water and then pressure up one and thumb on the other. I will give it a go...

Thanks
Bill

Bill,

You misunderstood the test procedure for the fuel accumulator test. Get a glass of water and partially submerge the FA. You need half of the FA in water and upper half out of the water. Then blow air to one of the upper port and at the same time plug the outer upper port.

If the FA is good and you had blown enough air, there will be no air bubbles in the glass of water. If you see air bubbles, throw away the fuel accumulator. Repeat the test to confirm your test results.

Tony

OK I tested the FA per your suggestion with a glass of water. Bubbles for sure coming out the submerged lower port. So success! Well if success is defined as one part to purchase and replace...:)