replacing fuel pressure regularor on 86
Thread Starter
Instructor
Joined: Mar 2004
Posts: 141
Likes: 0
From: Burbank IL
replacing fuel pressure regularor on 86
my dad has an 86 and i turned the ignition to on and removed the hose frrom the side of it and gas shot out. that means its bad right. also i read the chiltons book on replacing it it says you have to remove the fuel rail has anyone done it a different way.
thanks mike
thanks mike
Drifting
Joined: Mar 2005
Posts: 1,923
Likes: 0
From: GA
You don't have to remove the fuel rail but you do have to remove the plenum.
Remove the plenum, remove the gas cap (relieve pressure in the tank). Remove the safety torx screws holding the regulator cap and backup ring on. Remove the regulator cap, backup ring and diaphram. Replace with new and reassemble.
Remove the plenum, remove the gas cap (relieve pressure in the tank). Remove the safety torx screws holding the regulator cap and backup ring on. Remove the regulator cap, backup ring and diaphram. Replace with new and reassemble.
Team Owner
Joined: Mar 2000
Posts: 83,383
Likes: 87
From: Boston, MA
Originally Posted by canon1414
..if i take the plenum off do i need a new gasket or can i reuse the one i take off.
Drifting
Joined: Mar 2005
Posts: 1,923
Likes: 0
From: GA
Originally Posted by canon1414
thanks for the help also if i take the plenum off do i need a new gasket or can i reuse the one i take off.
thanks again
thanks again
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Team Owner
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From: SE NY
Cruise-In II Veteran
If it's a stock setup there will be a connector the MAT sensor in the plenum. Once you have the plenum loose raise the rear a little and unplug that sensor.
There are two rubber vacuum lines on the right of the TB and a hard line under the middle of the TB, use caution unplugging this as the hard lines become brittle with time and heat cycling. I prefer to separate the TB from the plenum before removing the plenum. Most likely you can reuse the gasket between plenum and TB.
Be aware that the gaskets between plenum and upper runners are "plugged into" the plenum with plastic divits. So try to keep these gaskets attached to the plenum when removing it.
When installing the Torx bolts into the plenum finger start all of them well into position before putting a wrench to them, to avoid cross-threading any. You may need to really "coax" the plenum to get all bolts started.
There are two rubber vacuum lines on the right of the TB and a hard line under the middle of the TB, use caution unplugging this as the hard lines become brittle with time and heat cycling. I prefer to separate the TB from the plenum before removing the plenum. Most likely you can reuse the gasket between plenum and TB.
Be aware that the gaskets between plenum and upper runners are "plugged into" the plenum with plastic divits. So try to keep these gaskets attached to the plenum when removing it.
When installing the Torx bolts into the plenum finger start all of them well into position before putting a wrench to them, to avoid cross-threading any. You may need to really "coax" the plenum to get all bolts started.
