Vibration Noise At Idle: Fuel Pipe Fix (1987 R2500 P/U 2WD V8-350 57L)
FIGURE 2 - INSPECT FUEL PIPES
FIGURE 3 - INSPECT FUEL PIPES
4.3L AND 7.4L ENGINES
1.
Remove the air cleaner assembly.
2.
Inspect the fuel pipes as they pass near the floor pan and the dash cowl panel (Figures No. 2 and No. 3). The pipes must have 1/2" clearance
between the floor pan and dash cowl panel. If the pipes contact the floor pan or dash cowl panel, reposition the pipes away from the floor pan or
dash cowl panel. It may be necessary to raise the truck to gain access to the pipes as they pass near the floor pan. It should not be necessary to
disconnect or unclip the pipes to reposition them.
3.
Reinstall the air cleaner and retest the truck.