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> Fuel Delivery Issues, '74 2.0 D Jet
germaneighter
post Nov 8 2005, 01:47 PM
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Is there a pressure spec for the fuel pump before the regulator?

What is the best spot to check this?
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Dave_Darling
post Nov 8 2005, 02:03 PM
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The spec for the fuel pressure, measured anywhere "downstream" of the fuel pump and "upstream" of the fuel pressure regulator, is 2 Bar. 1 Bar is about 14.5 PSI, so the spec pressure is 29 PSI. This should be the pressure the whole time the fuel pump is running; after the pump stops the pressure can and will drop.

Tap into the high-pressure loop of the system pretty much anywhere. The 2.0s have a separate single hose going to the cold-start valve, and that can be a convenient place to tap into. The 1.7s have a CSV that is "in line", so it's not as easy to tap into that. If there is an extra fitting on one of your fuel rails, you can remove the bolt in the fitting and hook up to that. Otherwise, you might need to build a "T" and put that in the middle of one of the fuel hoses.

--DD
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Posts in this topic
germaneighter   Fuel Delivery Issues   Nov 8 2005, 01:47 PM
type47   let's see... you have D-jet so the pressure be...   Nov 8 2005, 01:53 PM
bd1308   before the regulator....like alot. it's just g...   Nov 8 2005, 01:53 PM
Dave_Darling   The spec for the fuel pressure, measured anywhere ...   Nov 8 2005, 02:03 PM
germaneighter   When the ambient temp is over 70 and after the car...   Nov 8 2005, 02:47 PM
Bleyseng  
 

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