Mitsubishi Eclipse 1990, Service Manual, Page: 464 / 2103

I E N G I N E
PROBLEM SYMPTOMS TABLE (FOR YOUR
Items Symptom
Starting
Won’t
The starter is used to crank the engine, but there is no combustion
within the cylinders, and the engine
Fires up and dies
There is combustion within the cylinders, but then the
stalls.
.
Engine starts after cranking a while.
Hard starting
Idling
stability Hunting
Engine speed doesn’t constant; idle.
Usually, a judgement can be upon the of
tachometer pointer, and the vibration transmitted to the
wheel, shift lever, body, etc. This is
rough idle.
Rough idle
The engine doesn’t idle at the usual correct Speed.”
The engine stalls when the foot is taken ‘from pedal,
regardless of whether vehicle is moving or not.
Incorrect idle speed
Engine stall (Die out)
The engine stalls when the accelerator pedal is depressed
is being used.
Engine stall (Pass out)
Hesitation “Hesitation” is the delay in response of the vehicle speed (engine
speed) that occurs
accelerator is depressed in order to
accelerate from the speed at which the vehicle is
temporary drop in vehicle speed (engine speed)
Serious hesitation is called “sag”. (Refer to 1)
Poor acceleration is inability to obtain an
to the degree of throttle opening, even though acceleration is smooth,
the inability to reach maximum speed.
acceleration
Engine speed increase is delayed when the pedal is
depressed for acceleration. (Refer to Fig. 2)
feeling of a comparatively large impact or when the
is accelerated or decelerated.
,
is acceleration and deceleration feel usually at steady,
hrottle cruise. Most notable under light loads.
sharp sound like a hammer striking the cylinder walls during driving
which adversely affects driving.
condition in which the engine continues to run after the ignition
is turned to OFF. Also called “Dieseling”.
on
Fig.
1
Hesitation Hesitation
Vehicle
speed
Fig. 2
Vehicle
speed
Normal
Idling
Stumble
I
Time
Time
I Revision