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I believe (in the 930 at least) that this is on the same circuit as the rear fuel pump. So that's why there is no voltage with the engine not running but the ignition in the "on" position, since the pumps don't run then either. So this could also be an indication that your rear pump isn't running... |
My car is an SC, so there is only one FP. I will put ign in ON and see if I can get 12V
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What are the details of your fueling and CIS system since standard SC fueling likely wouldn't cut it? Its tough to troubleshoot if we don't know what you have. |
Its 930 CIS, but I only have one fuel pump.
If I should have 12v in the on position, there does not seem to be 12v to the plug. |
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A 930 has two pumps, so is your single (assuming 044) in the front or rear? The WUR and AAR voltage are off the rear pump circuit. |
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Or would I get 12V if I jump the FP?
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Yeah it worked. 11.64v with key on and FP jumped.
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Do you have an AFR gauge installed?
How about a fuel pressure tester? Either of those will help you to quickly either confirm or eliminate fueling as a problem. |
AFR is not installed yet, and do not have a fuel pressure tester, but am looking for one now.
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https://www.amazon.com/gp/product/B008FJXA3M/ref=ox_sc_sfl_title_1?ie=UTF8&psc=1&smid=ATVPDKIKX 0DER |
Ok guys CIS gauge should arrive today.
What is the sequence to test? What numbers should I be looking for? Thanks. |
So, the fittings for this CIS tester do not fit.
Any idea what size the fittings are? I've read 12 x 1.5 but that was for SCs, is the 930 WUR fittings different? |
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On my SC, I have tested the fuel pressures by using the fitting on the warm up regulator and not the distributor. Are the 930 lines and fittings bigger? Probably? Don't know for sure. Procedure in short. Get the tester in the system between the dist center line and where it enters the WUR. The tester should have the shut off valve AFTER the T that feeds the gauge. Unplug the electrical thingie from the WUR. Cold engine. Dead cold. Turn shut off valve to off. No fuel passes by this. Energize fuel pump. This is system pressure. Turn valve to open. Energize fuel pump. This is cold control pressure. Plug WUR thingie back in. Start car with valve open. Watch pressure rise. Wait till it stops rising. This is warm control pressure. Will look for a graph now. |
Check this thread out. One BAR of force = 14.5 psi of force.
http://forums.pelicanparts.com/911-930-turbo-super-charging-forum/617772-checking-fuel-pressure-cold-pics-help.html |
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If I knew what size the male fitting is on the WUR I could see if the kit has the correct female fitting. |
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Finally was able to pick up a HF tester and after tightening up the fittings a 2nd time....
The system pressure at 48F was 85 psi and the cold pressure was 25. Both seem to be right on spec. Will check the warm pressure Sunday. |
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