Motorcycle Spark Plugs A7TC Match for C7HSA/
IU22/Z199/U3AC/NAR14YC/P-RZ7HC
TAKUMI Group Spark Plug Factory is the No.1 OE spark plug manufacturer in China, and covers
approximately 60% of Chinese OE market.
We have the most reliable welding technologies of platinum and
iridium;
therefore, we can supply high quality spark plugs with competitive
prices
Now, we are asked to manufacture spark plugs as OE replacement for
some famous brands.
1. Products Description.
TAKUMI
| A7TC |
Thread
| M10*1 |
Reach
| 12.7mm |
Hex
| 16mm |
Seat Type
| Flat |
Gap
| 1.1mm |
Heat Range
| 7 |
Electrode Type
| J Type |
Type
| motorcycle/ small engine |
Electrode Enhancements
| Nickel alloy/Iridium and platinum electrode |
Feature
1. Designed specifically for the performance enthusiast.
2. The Iridium Spark Plugs offer extreme ignitability, improved
throttle response and superior anti fouling.
3. Fine Iridium tip ensures high durability and a consistently
stable spark
4. Laser welded Iridium center electrode tip
5. Iridium alloy has extremely high melting point, perfect for
today’s high-tech,
6. high-performance engines
7. Trivalent Metal Plating has superior anti-corrosion and seizing
properties
8. Outstanding acceleration, high fuel efficiency and durability
9. Ultimate design, technology and performance
10. Corrugated Ribs Prevent Flashover
11. Pure Alumina Silie Ceramic Insulator, Provides Superior
Strength and Better
12. Heat Transfer
13. Copper Core Aids in Heat Removal
14. Triple Seals Prevent Leakage
Spark plugs are one of the most misunderstood components of an
engine. Numerous questions have surfaced over the years, leaving
many people confused.
This guide was designed to assist the technician, hobbyist, or race
mechanic in understanding, using, and troubleshooting spark plugs.
The information contained in this guide applies to all types of
internal combustion engines: two stroke engines, rotary engines,
high performance/racing engines and street vehicles.
This guide was designed to assist the technician, hobbyist, or race
mechanic in understanding, using, and troubleshooting spark plugs.
The information contained in this guide applies to all types of
internal combustion engines: two stroke engines, rotary engines,
high performance/racing engines and street vehicles.
Spark plugs are the “window” into your engine (your only eyewitness
to the combustion chamber), and can be used as a valuable
diagnostic tool. Like a patient’s thermometer, the spark plug
displays symptoms and conditions of the engine’s performance. The
experienced tuner can analyze these symptoms to track down the root
cause of many problems, or to determine air/fuel ratios.
How to Read Your Spark Plugs
Is your engine running too lean? Too rich? Is there an issue with
oil control or ignition timing? Or is everything just fine with
your engine? Like the mechanical version of the Magic 8-Ball, your
spark plugs may have the answers for you. The trick is learning how
to read your spark plugs.
With help from the spark plug experts at Beyond First Auto, we’ll
teach you how to diagnose minor tuning issues or potentially major
engine problems by examining your spark plugs. Check out the images
below, courtesy of Spark Plugs, and get ready to do a little light
reading the next time you pull your spark plugs.
Normal
Appearance: A light tan/gray or brownish color, along with very
little electrode erosion, indies optimal operation conditions,
including a healthy engine and correct spark plug heat range.
Deposits
Appearance & Symptoms: The electrodes—center and ground—are covered
in an ashy coating. As a result of this masking of the electrodes,
your engine may experience a misfire. This build-up of combustion
deposits can eventually (but not usually) fill in the space between
the two electrodes.
Possible Causes: Oil leaks, poor fuel quality.
Wet and Dry Fouling
Appearance & Symptoms: Dry fouling (top) appears as sooty, black
build-up. Wet fouling (bottom) has a wet, sometimes oily
appearance. Both conditions can create poor starting and misfiring.
Possible Causes: Depending on whether the spark plug is coated in
oil or fuel, wet fouling can be symptomatic of a compromised head
gasket, poor control from your pistons’ oil control ring,
valvetrain problems, or an extremely rich condition. Dry fouling,
or carbon fouling, is often caused by an overly rich condition, and
the problem may lie with your air cleaner (clogged) or carburetor.
Other possible causes could be low compression, vacuum leak, overly
retarded timing, or improper spark plug heat range.
Lead Fouling
Appearance & Symptoms: Lead fouling can only occur in applications
that use leaded gasoline, such as racing engines. Lead fouling
generally shows up as yellowish brown deposits on the spark plug’s
insulator nose. Lead fouling can cause your engine to misfire only
at high-rpm and under hard acceleration.
Possible Causes: This condition commonly occurs when gasoline
contains too much lead; however, because spark plugs are changed
frequently in racing applications, lead fouling has become less
common.
