What is the best way to change a fuel pulsation damper on a 1994 Toyota T-100?

Answer 1

I am currently replacing the fuel pulsation dampener on a 1994 T100, and it absolutely requires the manifold plenum be removed from the lower half of the intake manifold simply to gain access to the fuel rail and the pulsation dampener. Accessing and removing the pulsation dampener is not very hard to do, I did it this evening in a little less than an hour with basic hand tools. First all fuel lines, vacuum lines, coolant lines, EGR exhaust feed tube, electric connections, Throttle cables, etc.. and the bracket under the pass. side need to be removed from the plenum. Then the plenum can be unbolted from the lower half of the manifold and lifted off (if it has been on there a while you'll need to replace the plenum gasket. Be sure to stuff paper towels down in the lower manifold runners to prevent debris from entering the engine.) Then the line that transfers fuel from one fuel rail to the other fuel rail at the back of the rails needs to be removed. Now a good crescent wrench can be used to remove the pulsation dampener. Viola... Installation is the reverse of removal. Be sure to run a fuel line from the pressure regulator back to the fuel tank return line, and using the diagnostics connector and a jumper wire between FP and +B with the key on, pressure test the fuel system while you can see everything before the plenum is reinstalled and blocking your view.