1988 Isuzu Trooper diesel conversion

As the 4JB1-T injection pump is on the driver's (in North America, at any rate) side of the engine, the factory gasoline fuel line termination at the passenger's side frame rail near the firewall had to be addressed.

I had initially run rubber hoses from the factory hardlines up and over the firewall, down the fender and to the filter/primer pump assembly. In search of a more permanent solution, I decided to install steel lines in place of the rubber hoses, following the same route.

The new lines are formed from 6' lengths of brake and/or fuel line and are secured along part of their route by the factory clips (one of which used to keep the clutch line in place when it ran across the firewall; the other was empty), one new bracket (connected to the cruise control actuator mounting holes and running up the firewall) and a few rubber line clamps.

The new steel lines connect to the factory fuel supply and return lines at the passenger- side frame rail with short lengths of rubber hose, and to the filter/pump assembly with loops of hose. I am not terribly worried about the proximity to the exhaust where the new lines meet the factory lines; although it is close, I plan on fabricating a heat shield if necessary.