Geely Diagnosis Flow. Manual part - 20

Geely Diagnosis Flow. Manual part - 20


77

Throttle valve opening abnormal

Adjust

Engine with insufficient
power

Clean or replace

Air filter blocked

Intake system leaking

Repair leaks

Improper ignition timing

Throttle valve position sensor
malfunction

Adjust or replace

Adjust advance angle of initial
ignition

Fuel pressure too
low

Repair

Remove, clean oil
ejector

Replace oil injector

Replace cooling liquid
temperature sensor

Battery voltage too
low

Check charging system or replace
battery

Cooling liquid temperature
sensor malfunction

Intake manifold pressure temperature
sensor malfunction

Replace intake manifold pressure

Replace ECU contrast test

Replace ECU

Compression pressure of
cylinder too low

Remove and repair engine

No changes

Unusual

Normal

Normal

Normal

Normal

Normal

Normal

Normal

Normal

Normal

Normal

Changes

Unusual

Abnormal

Abnormal

Abnormal

Too low

Abnormal

Unusual

Unusual

Leaking

Blocked


78


No. 046 Oil consumption too large

Malfunction Causes

Solution

Driving habit problem

Also the most common problem. The counselor shall explain to the
customer patiently and nicely, using euphemism;

Oxygen sensor malfunction

Check oxygen sensor could correctly identify concentration of gas mixture;
if not, it will cause high oil consumption;

Clearance of spark plug too
large

Clearance of spark plug is too large, causing poor ignition, which is one of
reasons causing high oil consumption;

Improper ignition timing

Check ignition timing; when the engine is at idling speed, ignition advance
angle shall be 10º~12º; if not correct, it may cause rising oil consumption;
adjust ignition advance angle of the engine;

Oil injector blocked or poor
sealing

Remove oil injector; check ejecting amounts and sealing are normal; if not,
clean or replace oil injector;

Cylinder poorly operating

Check cylinder pressure, valve, etc. If individual cylinders are not working,
repair it accordingly; replace or adjust parts causing unusual working;

Cooling liquid temperature
sensor malfunction

Check cooling liquid temperature sensor. Resistance of this sensor could be
changed according to specified standard under different temperatures; if
not, replace this sensor;

Air filter blocked

Check air filter is blocked; if so, it may cause poor intake and large oil
consumption; clean or repair it;

Poor fuel quality

Fuel with poor quality may cause this malfunction; recommend the
customer to replace it at filling station that he often uses;

Tire obviously worn or
pressure severely insufficient

Tire will cause increased friction force, balancing out partial engine power,
causing increased oil consumption;

Clutch slipping

With sudden acceleration, speed counter of the engine is quickly increased,
but the vehicle speed is very slowly increased, which could be judged that
the clutch is slipping, causing idle running and increased oil consumption;
replace clutch pressure plate and driven disk;

Temperature control system
malfunction causing large oil
consumption

For carburetor vehicle in old Geely model, the following malfunctions may
occur: temperature control switch and thermostat are damaged, causing
increased oil consumption as these damages will cause reduced water
temperature, and carburetor cold not work normally, causing poor gasoline
atomization and obviously increased oil consumption; replace it;

Fuel pipe leaking

Check fuel pipe; replace leaking pipe;

Braking seizing

Adjust front and rear braking; if necessary, burnish brake disk;

Oil tank cover not well sealed Poor sealing causes fuel evaporation;

Canister control non-return
valve damaged

Replace it;

During using, oil
consumption of the
engine is a lot
higher than
standard value

Inlet pressure and
temperature sensor damaged

Intake quantity not conforming to standard values, causing error control,
and high oil consumption when the vehicle is driving; check it with computer
diagnosis instrument; if necessary, replace inlet pressure sensor;

Throttle valve position sensor
with broken circuit

Unable to identify opening; replace sensor;

Three-way catalyzer blocked

Cementing within three-way catalyze blocked, with poor exhaust, causing
high oil consumption; replace it;

Inlet pipe leaking

Replace inlet pipe;

Individual cylinders not
working

Check operations of each cylinder; if individual cylinders are poorly
operating, mainly check spark plug, high tension line, cylinder pressure, etc.
Confirm causes and repair or replace;

Incorrect valve timing of the
engine

Check valve timing is correct; if not, adjust it;

Cylinder pressure too low

Measure compression pressure of engine cylinder; if too low, check valve
clearance or remove and repair engine;

Idling speed too large or too Eliminate one by one according to idling speed-related malfunction


79

small

template, making idling speed reach normal state;

Water temperature abnormal

Eliminate one by one according to water temperature-related malfunction
template, making water temperature reach normal state;


80

Drive correctly

Oil consumption too
high

Driving habit problem

Oxygen sensor
malfunction

Clearance of spark plug too
large

Improper ignition timing

Oil ejector obstructed or poor sealing

Cylinder poorly operating

Clean

Repair

Replac
e

Check and
adjust

Adjust

Normal

Poor sealing

Normal

Normal

Normal

Normal

Improper

Too large

Abnormal

Habit problem

Repair

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