this is on a v6
Toyota Q&AAsk Your Question
1998 Toyota Avalon Question: what does the fuel injection pressure damper do? and will it cause my back fuel?
Answer #1your.mechanic October 23, 2012, 18:20Master
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.
ReplyEthanJay, October 23, 2012, 18:24Rookie
ok well for some reason i am not getting any fuel to the back 3 fuel injectors could a bad damper be the cause?
Replyyour.mechanic, October 23, 2012, 18:50Master
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.
ReplyEthanJay, October 24, 2012, 17:46Rookie
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.
Replyziptie12, October 25, 2012, 08:40Master
What do the rear 3 plugs look like when visually inspected? Gas or oil fouled ? Wet , but no smell of gas?
ReplyEthanJay, October 25, 2012, 16:11Rookie
the plugs are dry and have no smell of gas on them. they seemed to have a lil carbon build up on them
Answer #2Greg's Orange Auto (13671 Answers) , Orange, CA - (714) 361-9386globalhelper October 24, 2012, 07:02Master
ck eng codes and post or scan inj operation or test for pulse at each inj