Uma Racing 101: All you NEED to know about SPARK PLUGS !!

UMA RACING 101 : InfoTech
101: Understanding the spark plug !
“R” written on the spark plug are called RESISTOR spark plug with 9.5 k ohm resistor which suppresses / reduces ignition noise generated during sparking
-These “R” types of spark plug strongly recommended by all spark plug manufacturers in ANY VEHICLE that uses an inboard computerize system) or simple words FUEL INJECTION
**Because it REDUCES electromagnetic interference with electromagnetic devices.

SIDE EFFECTS OF A NON RESISTOR SPARK PLUG in a computerized onboard vehicle /INJECTION)
1) ERRATIC ( irregular) IDLING
2) High RPM misfire
3) Engine run-on( damage )
4) Power drop at certain RPM
5) Abnormal combustion

HOW TO DIAGNOSE A SPARK PLUG ??
How to actually tell between a “good” and a “bad” spark plug??
One of the most effective ways is to notice the COLOR

1) Brown or light grey
Indicates: Good and functioning optimally

2) Blackish wet
Indicates: Rich condition / incompatible plug / low compression / retarded timing / plug gap is too large

3) Insulator tip glazed / glossy
Inducates: OVERHEATING

Thats all for now !! Next week we will be talking about the 02 sensor !

UMA RACING 101 INFOTECH ! WHERE WE EDUCATE YOU ABOUT OUR PRODUCTS ! LESSON 1: DO NOT BYPASS RADIATOR FAN SWITCH FOR IT WILL FLUCTUATE VOLTAGE OF CDI CAUSING DAMAGEED!!

Uma Racing 101 InfoTech !!

101: AVODING DAMAGED STARTER MOTOR AND CDI
101: Do not bypass the radiator fan switch( PICTURE 2) because it will fluctuate( unstable / decrease) electricity of the CDI during the first start up which may cause DAMAGED CDI !
**Normal voltage during 1st start up= minimum 11.2 ( production bike).Bypassing the fan switch will cause INSUFFICIENT current on to the CDI.
( NOTE THE DIFFERENCE IN VOLTAGE PICTURE 3 AND 4)
**ALTERNATIVE TO ENHANCE COOLING SYSTEM OF THE MOTORYCYLE**
= Instead of bypassing the fan switch , you can REMOVE the thermostat valve( PICTURE 5)
THIS IS NOT APPLICABLE IF YOU ARE USING A RACING BIKE/KICK START MOTORCYCLE

Browse through each picture for detail descriptions
The Bahasa Malaysia version will be uploaded next monday:)
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PICTURE 1

PICTURE 2

PICTURE 3

PICTURE 4

PICTURE 5