 Fuel pressure regulator question |
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| MartyYeoman |
 Aug 20 2011, 05:04 PM
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Senior Member  Group: Members Posts: 1,519 Joined: 19-June 03 From: San Ramon, CA Member No.: 839 Region Association: Northern California 
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I'm bench testing two fuel pressure regulators (PN 0 280 160 200).
One unit regulates line pressure to 40psi while the other regulates to 39psi. Both reduce line pressure to approx. 32psi at 0.5 bar. Here's my question, The 40psi unit allows line pressure to bleed off almost immediately, while the other holds pressure at approx 35psi almost indefinitely. What gives? (IMG:style_emoticons/default/confused24.gif) I thought line pressure was held by a check valve in the pump and has nothing to do with the regulator. My test setup shows otherwise. Also does the 1psi (2.5%) line pressure really mean anything to performance? Any thoughts? Attached image(s) 
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Posts in this topic
Marty Yeoman Fuel pressure regulator question Aug 20 2011, 05:04 PM
Valy 0.5bar=7.25PSI so the difference seems correct, as... Aug 20 2011, 06:40 PM
Valy
0.5bar=7.25PSI so the difference seems correct, a... Aug 21 2011, 12:24 PM kg6dxn I have never used that type of regulator but...
A... Aug 20 2011, 07:22 PM Marty Yeoman
I would use the one that holds pressure first.
... Aug 20 2011, 08:31 PM  |
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