Fuel Pressure Release
#1
#2
hi, in my experiance the fuel pressure leeks down when stood for a while but there is a releaf valve (like a tyre valve) on the fuel rail with a black plastic screw off cover. in side just push back the valve but protect your self by putting a rag over. just do not do this with a hot engine. good luck bokker.
#3
#5
Pull either the fuel pump relay or its fuse while the engine is idling. Wait for the engine to die. This will bleed the pressure down to about half of what it otherwise would have been.
Finish the job by depressing the stem in the Schraeder valve while protecting yourself as suggested.
You can also give the inertial switch a sharp rap with your hand to trip it. Just remember to reset it when done.
Steve
Finish the job by depressing the stem in the Schraeder valve while protecting yourself as suggested.
You can also give the inertial switch a sharp rap with your hand to trip it. Just remember to reset it when done.
Steve
#6
#7
Actually, from the 97 service CDD, the official procedure is:
Since 99% of this site's readers don't have and won't buy a proper fuel pressure guage, the idea is to accomplish the same result without causing an undue risk of injury or damage.
Steve
µ 1. Remove the schrader valve cap and attach EFI/CFI Fuel Pressure Gauge.
µ 2. Note:
Open manual value slowly to relieve system pressure. This may drain fuel from system, place fuel in suitable container.
Open the manual valve on EFI/CFI Fuel Pressure Gauge and relieve fuel pressure.
l This will drain some fuel out of the system. Place fuel in suitable a container.
µ 2. Note:
Open manual value slowly to relieve system pressure. This may drain fuel from system, place fuel in suitable container.
Open the manual valve on EFI/CFI Fuel Pressure Gauge and relieve fuel pressure.
l This will drain some fuel out of the system. Place fuel in suitable a container.
Steve
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