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1998 Toyota Avalon Question: what does the fuel injection pressure damper do? and will it cause my back fuel?

 

Question

EthanJay, 3.0L V6, Frost, TX, October 23, 2012, 18:12
 Rookie

this is on a v6

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  • Answer #1

    your.mechanic October 23, 2012, 18:20
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     Master

    the fuel injection pressure dampers purpose is to absorb the fuel pumps pulsing of fuel into the fuel rail...that way you will have an even pressure instead of a pulsing fuel pressure.

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    EthanJay, October 23, 2012, 18:24
     Rookie

    ok well for some reason i am not getting any fuel to the back 3 fuel injectors could a bad damper be the cause?

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    your.mechanic, October 23, 2012, 18:50
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     Master

    incidently, fuel pressure is supposed to be 44-50psi. you say the back three injectors are not getting fuel? how did you know? they are under an intake plenum.

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    EthanJay, October 24, 2012, 17:46
     Rookie

    because when the car is running i removced all 3 plug wires to the back cylinders and the sound of the motor never changed. i checked the wires to the plug and the are firing at the plugs so there fore it narrows it down to a fuel problem. i can undo one coil pack on the fron three cylinders and the motor dies. so i know the front three are firing and getting fuel.

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    ziptie12, October 25, 2012, 08:40
     Master

    What do the rear 3 plugs look like when visually inspected? Gas or oil fouled ? Wet , but no smell of gas?

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    EthanJay, October 25, 2012, 16:11
     Rookie

    the plugs are dry and have no smell of gas on them. they seemed to have a lil carbon build up on them

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  • Answer #2

    Greg's Orange Auto (12997 Answers) , Orange, CA - (714) 361-9386
    globalhelper October 24, 2012, 07:02
     Master

    ck eng codes and post or scan inj operation or test for pulse at each inj

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