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ENGINE
6-1
3
J. Cuts Out
1. Check ignition wires, boots, cap and coil
for:
a. Damage
b. Deterioration
c. Loose connections
d. Carbon tracking
Clean, tighten and/or replace defective parts
as necessary.
2. Connect secondary voltage output meter or
scope to engine.
Using insulated pliers, check output
as
each
spark plug wire is removed output voltage
should read:
a. 25 KV or above
b. No arcing should occur
If any reading is below specification or
arcing occurs, with engine off, remove
distributor cap and visually inspect for
moisture, dust, cracks, burns, etc.
Check distributor for:
a. Worn shaft
b. Bare or shorted wires
c. Faulty pick up coil, module, ignition coil,
and condenser. Repair or replace defective
parts as necessary.
3. Remove spark plugs. Check for cracks,
wear, improper gap, burned electrodes, heavy
deposits. Repair or replace as necessary.
4.
Check carburetor fuel inlet filter.
Replace if dirty or plugged.
5. Test fuel pump by connecting hose from
carburetor fuel feed line to a suitable
container.
Start engine and let idle for 15 seconds.
a. Mechanical pump should supply 1/2 pint
or more. If not, go to step 7.
b. If electric pump supplies less than 1/2
pint, check fuel lines to tank for kinks
or dirt. If OK, go to step 8.
NOTE: Check electric supply to pump. If
less than 12.2 volts, check pump wiring
circuit. See Section 6C.
6. To check mechanical fule pump, disconnect
inlet hose at pump and connect a vacuum gage.
Crank or run engine until maximum vacuum
is reached. If less than 12 inches, replace
pump. If vacuum reading is 12 inches or
more, go to step 8.
7. Check fuel lines and hoses for splits,
leaks or kinks by disconnecting each section
of line and connecting a vacuum gage. Crank
or run engine until vacuum gage peaks. Vacuum
should be at least 12 inches. If less, repair
or replace defective .line or hose as
necessary.
8. If fuel pump and fuel lines check OK,
remove tank unit, replace strainer add clean
fuel tank, if necessary.
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