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Page Title:
TABLE 4. TROUBLESHOOTING GUIDE - continued |
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 TABLE 4. TROUBLESHOOTING GUIDE (Continued)
REMEDY
PROBABLE CAUSE
TROUBLE
1. ENGINE (Continued)
Free-up, and adjust valve.
Heat control valve not operating
Engine operates, but
backfires and spits
Clean screen; replace pump, if
Fuel pump pressure low
(continued)
defective.
Remove and clean strainer.
Fuel strainer clogged
Clean and repair lines.
Partly clogged or pinched fuel
lines
Inspect gaskets and tighten manifold
Intake manifold leak
stud nuts.
Replace cap.
Distributor cap cracked or
Shorted
Adjust carburetor.
Carburetor throttle valve closes
Engine stalls on idle
too far, or idle mixture incorrect
Free-up and lubricate valve.
Carburetor choke valve remains
closed.
Clean or replace carburetor.
Dirt or water in idler passages of
Carburetor
Inspect gaskets and tighten manifold
Air leak at intake manifold
stud nuts.
Free-up and adjust valve.
Heat control valve defective
Clean or replace spark plugs, set
Spark plugs defective, gaps
gap clearance.
incorrect
Reset timing.
Ignition timing early
Report to designated
Low compression
authority.
Replace gasket; report cylinder
Water leak in cylinder head or
head leak to designated
head gaskets
authority.
Engine misfires on one
Clean, adjust, or replace plugs.
Dirty spark plugs
or more cylinders
Reset gap.
Spark plug gap incorrect
4-70
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