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boyt911sc boyt911sc is online now
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Join Date: Mar 2002
Location: Philadelphia, PA
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Fuel pressures.......

Mike,

I don’t see the value for the WCP (with vac.) in your post. The WCP (w/o vac.) was 2.7 bar (39 psi.). The spec. range is 39~45 psi. Adjust it to 42 +/-(1). You will need a hand vac pump to measure the WCP with vac @ 16” Hg if the engine is not running and using the FP only.

Test the CSV to confirm its operation. A non-operating CSV will cause a cold start problem. Test and confirm. You need to remove the CSV from the motor to be able to test it and confirm that it is spraying sufficient fuel for cold start.

Your fuel pressures (control and system) are still within specifications but at the low end of the range. The residual pressure is good.

Tony
Old 08-10-2020, 09:37 AM
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