
Takumi Japan is an automotive group consisting two business sections: traditional auto parts section & new energy electric vehicles section.
Takumi Japan auto parts business section is specialized in design, manufacture and marketing of Ignition system parts, Filtration system parts & Hybrid Batteries throughout the world. Taking advantage of the leading technologies, products from Takumi Japan have been obtaining very good reputation and gaining customers' satisfaction.
Takumi Japan has developed a professional team for international markets and been regularly participating at major international exhibitions to help our customers to be famous in local markets.
| Model | C7HTC |
| Thread size | M10*1.0 |
| Reach | 12.7mm |
| Hex | 16mm |
| Seat Type | Flat |
| Gap | 0.6-0.8mm |
| Heat Range | 7 |
| Electrode type | J type |
| Resistor | no |
| Center electrode material | copper |
There are several reasons for carbon sediment in spark plugs:
A. Improper selection of spark plug model;
B. The mixture is too thick or the lubriing oil in the mixture is too much;
C. Frequent engine start or long time start ;
D. Low speed operation of engine for a long time;
E. Too much lubriing oil in the crankcase;
F. Excessive wear and tear of piston ring;
G. The ignition time is too late.
