Specifications

Troubleshooting
TX,100,DH2481 –19–02OCT92–2/12
Symptom Problem
Solution
Injection nozzle(s). See your authorized dealer.
Low compression or blown head 544G, LL, TC, 624G—Remove fuel
gasket. shut-off fuse. Crank engine and
listen for air leaking past valves or
an uneven starter speed. Start
engine and observe blow-by from
vent tube. See your authorized
dealer.
Fuel injection pump. See your authorized dealer.
Engine Surges Or Stalls Fuel tank vent hose clogged. Loosen cap and listen for air rushing
Frequently into tank. Clean or replace hose.
Incorrect grade of fuel. Drain fuel tank and add correct fuel.
Water in fuel or water frozen in line. Drain water from fuel tank trap.
Inspect fuel filter(s) for water.
Change filter(s).
Fuel filter(s) clogged. Replace filter(s).
Air leak on suction side of fuel Check and tighten connections.
system. Check fuel lines for damages.
Fuel pump. See your authorized dealer.
Fuel return line from injection pump Disconnect fuel return line from
to tank restricted. injection pump. Connect a hose to
pump and route fuel into a container.
If engine runs normally, return hose
is restricted.
644G—Clogged overflow valve in See your authorized dealer.
injection pump.
Restrictor fitting on top fitting in Remove, inspect and clean.
injection pump clogged.
Continued on next page
100–3
PN=245