Hobart JET-EX 4 Operation And Maintenance Manual page 70

OM-2049
TROUBLESYMPTOM
AND CONDITION
ENGINE AND CONTROLS
2. Engine will not
start. Starter
DOES crank
engine. (cont'd)
3. Engine fires
and/or backfires
but will not run
3-1
Page 8
PROBABLE CAUSE
WARNING: EXERCISE CARE TO AVOID A FIRE WHEN
WORKING WITH THE FUEL SYSTEM. DO NOT PERFORM
STEPS F AND G WHEN ENGINE IS HOT
F. Defective fuel valve
solenoid (L404).
G. Defective fuel pump.
A. Spark plug cables
incorrectly installed
on plugs or in
distrubutor cap.
B. Distributor not
correctly timed to
engine.
C. Water in gasoline.
TEST, CHECK, AND/OR
REMEDY
F. Disconnect hose at input side
of fuel pump (17, Fig. 1).
Momentarily apply 12-VDC to
the fuel valve solenoid (14,
Fig. 1). If fuel valve
solenoid is good, fuel should
flow from it when voltage is
applied. Replace fuel valve
solenoid if defective. If
solenoid is good, proceed to
Step G.
G. Disconnect hose at output
side of fuel pump and crank
engine. If fuel does not
spurt from pump when engine is
cranked, replace pump.
A. Check high tension spark plug
wires. Firing order is 1-3-4-2
Correct as required. If
firing order is correct,
proceed to Step B.
B. Time in accordance with
instructions in Ford Mainten-
ance and Operator's Manual
in Chapter 5. If timing is
correct, proceed to Step C.
C. Check for water in fuel tank
and fuel lines. Drain tank
and refill if necessary.
May 20/89