General Engine Service; Engine Trouble Diagnosis - Ford 1961 TRUCK 100 SERIES Shop Manual

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GENERAL ENGINE SERVICE
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Section Page
1 Engine Troubl e Diagnosis .. 1- 2
2 Tune-Up .. . ......... . .... 1- 7
Engine Compression Test. 1- 9
Final (Hot) Valve Lash .. 1-16
Camshaft lobe lift. . . .. 1-1 7
Man ifold Vacuum Test.. 1-17
Preliminary (Cold) Valve
Lash ............. I-I S
Th is part covers engine trouble
diagnosis and tune-up procedures fo r
the 223 Six engine, the medium-duty
(292) and the h eavy-duty (292, 302,
Section P age
3 C leaning, Inspection, and
Reconditioning ...... ...... 1- 19
Int ake Man ifold ........ 1-19
Ex haust Manifold ... . ... 1-19
Valve Rocker Arm Shaft
Assembly . ........... 1-19
Push Rods ........... " 1-19
Cy linder Heads ......... 1-19
and 332) V-8 engines. In addition,
the cleaning, inspec tion, repair, and
overha u l procedu res for these co-
gines arc covered .
D
ENGINE TROUBLE DIAGNOSIS
Engine performance complaints
usually fall und er one of the basic
headi ngs listed in the "Engine
Trou ble D iagnosis Guide." When a
par ticu lar trouble can not be traced
to a definite ca use by a simple check,
the poss ible items th at could be at
fa ult are listed in the order of their
probable occurrence. Check the
items in the order listed. For ex-
ample, under Poor Acceleration the
ig nit io n system is listed as a proba-
ENGINE TROUBLE DIAGNOSIS GUIDE
ENGINE WILL NOT
CRANK
ENGINE CRANKS
NORMALLY, BUT WILL
NOT START
The cause of thi s trou ble is usually
in the start ing system (Part 12-2).
If the starting system is not at
fault, check for a hydrostatic lock or
a seized engine, as fo ll ows:
Remove the spark plugs, then at-
tempt to crank the engi ne with the
C heck the fuel supply. If there is
sufficient fuel in the tank, the cause
of the trouble probably lies in either
the igni tio n or the fuel system.
To dete rmi ne which system is at
fau lt, perform the fo llowing test:
Disco nnect a spark plug wire.
Check the spark intensity at the end
of th e wire by install ing a termin al
adapter in the terminal of the wire to
be checked. Then, hold the adapter
approx imately
o/w
in ch from the ex-
haust manifold and crank the engine.
Section Page
Valves ................. 1-20
Timing Chai n-223 Six
and 292 V-S .. ........ 1-21
Timin g Gears- 302 and
332 HD V-S ........ . . .. 1-21
Ca mshaft. . . . . . . . . . . . . . . 1-21
C ra nkshaft .... . . .. ... . . 1-22
Connectin g Rods .... . ... 1-22
Piston s, Pi ns, and Rings.. 1-22
Main and Con nectin g Rod
Bearings ............. 1-24
F lywheel- Manua l-Shift
Transm iss ions, ......... 1-24
Cy linder Block .......... 1-25
Oil Pan and Oi l Pumps .. 1-25
C rank case Vent ilation
System Ma intenance ... 1-26
For e ngine removal, disassembly,
assembly, and installation proce-
dures, refer to the part of this group
which covers the applicable engines.
ble cause of the trouble. All the ign i-
tion system items th at affect accelera-
tion are listed. Check all these items
before proceed ing to the next prob-
able cause.
starter.
If the
engi ne cranks, it indi-
cates th at water is leakin g into the
cy lind ers. Remo ve th e cylin der
head (s) and inspect the gasket(s)
and l or head(s) for cracks. Exa mine
the cylinder block fo r cracks.
IF THERE IS NO SPARK OR
A WEAK SPARK AT THE
SPARK PLUGS
The cause of the trouble is in the
ignitio n sys tem.
To determine if the cause of the
trouble is in the primary or the
seco nd ary circ uit, remove the coil
high tension le ad from the top of
the distributo r and hold it approxi-
matel y 3/ 16 inch fro m the cylinder
head. With the ignition on, crank the
engine and check for a spark.
If
the spark at the coil high ten-
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