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how much fuel rail pressure on 1994 dakota?? #1828375
05/17/15 11:41 AM
05/17/15 11:41 AM
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flyman Offline OP
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How much fuel rail pressure should I see on a 1994 Dakota? Also is the 1993 different?

Re: how much fuel rail pressure on 1994 dakota?? [Re: flyman] #1828499
05/17/15 02:08 PM
05/17/15 02:08 PM
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For the OBD-I SMPI injection system on
1995 Ram pickups with 3.9/5.2/ 5.9
the FSM says
35 psi plus or minus 5 psi
but in 1994 the fuel system became "returnless" with pressure regulating inside the fuel tank.

For 1992-1993 i believe the fuel system had a two lines with a pressure regulator near the engine.

In 1996 with OBD-II i believe the pressure jumped to 43.5 psi

In the late 1998 to 2002 years the pressure may have gone higher still.







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