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How much fuel should should be pumped to injectors?
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a1handy
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Jul 25, 2010, 4:39 AM
Post #1 of 4
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How much fuel should should be pumped to injectors?
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In an effort to replace some old gas in my 04 Taurus I disconnected the main fuel line and pumped the fuel out of the tank by hard wiring a circut in the fuel pump junction box in the trunk. I was surprised that the gas being pumped was not more than it was. I was expecting a rather large flow but the flow was only the size of about a pencil point or a bit more. Is this normal, a tech says my pressure is about 60 lbs which is normal according to his meter.
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Hammer Time
Ultimate Carjunky
/ Moderator
Jul 25, 2010, 4:43 AM
Post #2 of 4
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Re: How much fuel should should be pumped to injectors?
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The pressure spec is 35 to 70 PSI so it doesn't look like you have a problem. It will pump a lot of fuel with those pressures. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Vincent
New User
Jul 25, 2010, 6:49 AM
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Re: How much fuel should should be pumped to injectors?
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Generally speaking a fuel pump in good working order should pump a quart of fuel in no more than 70 seconds. Do a pump volume test and post the results.
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Hammer Time
Ultimate Carjunky
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Jul 25, 2010, 6:55 AM
Post #4 of 4
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Re: How much fuel should should be pumped to injectors?
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At 60 PSI, if it's fuel and not air being pumped out, you will pump a quart in a matter of seconds. This car uses an electronically controlled, Pulse Width Modulated variable speed pump. The controller dictates the pressure so a volume test won't mean much. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
(This post was edited by Hammer Time on Jul 25, 2010, 6:59 AM)
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