ENGINE TROUBLE IN GENERAL
MECHANICAL
Intake system
Loosened or cracked intake duct
Loosened or cracked PCV hose
Loosened or cracked vacuum hose
TROUBLE
4)
Engine stalls after initial
combustion.
2.
Rough idle and engine
stall
B
C
C
PROBLEM PARTS, ETC.
I
POSSIBLE CAUSE
I
RANK
Engine control system <Ref. to EN(D0HC TURBO)P, Basic Diagnostic Procedure.>
I
A
Fuel line
Belt
Dirty air cleaner element C
Clogged fuel line C
Lack of or insufficient fuel
B
Defective B
Defective timina B
I
I
Defective intake manifold aasket
IB
I
Improper engine oil
(low
viscosity)
Engine control system <Ref. to EN(D0HC TURBO)-2, Basic Diagnostic Procedure.>
I
Defective throttle body gasket
IB
B
A
Fuel line
Compression
Loosened oil filler cap
Dirty air cleaner element
Defective fuel Dump and relav
B
C
C
I
Incorrect valve clearance
IC
Incorrect valve clearance
Loosened spark plugs or defective gasket
Loosened cvlinder head bolts or defective aasket
I
Loosened spark plugs or defective gasket
IC
B
B
B
I
Loosened cylinder head bolts or defective gasket
I
C
Stuck or damaged throttle valve
Accelerator cable
out
of adjustment
Improper valve seating IC
Defective valve stem IC
B
C
I
IB
I
Worn or broken valve sprina
I
Worn or stuck piston rings, cylinder and piston
IC
I
Incorrect valve timing
IB
Intake system
Loosened or cracked intake duct
Loosened or cracked PCV hose
/A
/A
I
Loosened or cracked vacuum hose
IA
I
Defective intake manifold gasket
IB
Defective throttle body gasket
IB
Defective PCV valve
IC
I
Clogged fuel line
IC
I
Lack of or insufficient fuel
IB
Belt
I
Defective timing IC
Compression
I
Improper valve seatina
IB
I
Defective valve stem
IC
1
Worn or broken valve spring
IB
I
Worn or stuck piston rings, cylinder and piston
IB
Incorrect valve timing ]A
ImDroDer enaine oil
(low
viscositv)
IB
Lubrication system
I
Incorrect oil pressure
-1
--B
I
Defective rocker cover gasket
IC
Cooling system
I
Overheating IC
Others
I
Malfunction of evaporative emission control system
I
A
ME(D0HC TURBO)-92
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