Mitsubishi 1989 Galant, Service Manual

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FUEL SYSTEM <DOHC> Troubleshooting
PROBLEM SYMPTOMS TABLE (FOR YOUR INFORMATION)
Symptom
Won’t start The starter
IS
used to crank the engine, but there is no
(no combustion)
cylinders, and the engine won’t start.
Starting problem
There is combustion the cylinders, but then the engine soon stalls.
combustion, then
(Starting takes a long Engine won’t start quickly.
time.)
instability (Rough Engine speed doesn’t remain constant; changes during idling.
idling)
Usually, a judgment can be based upon the movement of the tachometer pointer
and the vibration transmitted to the steering wheel, shift lever, body, etc. This
called rough idling.
Incorrect idling speed
The engine doesn’t at the usual correct speed.
This non-continuity of idling includes the following elements.
out The engine stalls when the foot is taken from the accelerator
Die out
pedal, regardless of whether the vehicle is moving or not.
Pass out Pass out The engine stalls when the accelerator pedal is depressed
while it is being used.
Hesitation “Hesitation” is the delay in response
Hesitation
of the vehicle speed (engine that
Normal
occurs when the accelerator is
pressed in order to accelerate from
the speed at which the is now accelerator
traveling, or a temporary drop in
pedal
speed (engine during such
acceleration.
Serious hesitation is called “sag”.
depression
Time
Poor acceleration Poor acceleration is inability to obtain an acceleration corresponding to the degree Of
throttle opening, even though acceleration is smooth, or the inability to reach
maximum speed.
S t u m b l e Engine rpm response is delayed when
the accelerator pedal is initially
pressed for acceleration from
stopped condition.
Normal
Initial
accelerator
pedal
I ’
depression
Idling
Stumble
Shock
The feeling of a comparatively large impact or vibration when the engine
accelerated or decelerated.
Surge This is repeated surging ahead during constant speed travel or during variable speed
travel.
Knocking
sound like a hammer striking the cylinder walls during driving and
adversely affects driving.
I I
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