Pernahkah anda merasakan situasi 'jerking' atau tersengguk-sengguk semasa sedang ride? Kadang-kadang motor mati sendiri? Motor mati bila throttle lepas? atau Motor mudah mati bila engine panas? Jika anda pernah mengalami situasi seperti ini, salah satu puncanya adalah daripada CDI.

Macam mana CDI boleh rosak?
Kebanyakan CDI rosak adalah disebabkan oleh gangguan litar elektrik, modifikasi engine yang berlebihan, penggunaan unit CDI aftermarket yang kurang berkualiti (atau kata lain CDI Racing) dan juga faktor usia CDI tersebut. Anda perlu faham, peralatan elektronik juga ada jangka hayatnya.

Bagaimana langkah awal nak periksa CDI?
Anda boleh lihat dari segi LUARAN jika terdapat kesan-kesan seperti terbakar, menggelembung, dan silikon pecah atau retak.

Simptom-simptom CDI rosak
1) Motor macam nak mati bila dalam keadaan IDLE. Bermaksud penerimaan api terputus-putus.
2) Semasa tengah ride, motor terus padam. Pulas throttle (nak bagi minyak) pun tak jadi.
3) Motor susah start lepas dah mati. (CDI panas)
4) Motor tak boleh start. (CDI totally kong!)
5) Motor mudah mati bila lepas throttle.

Perkara ini biasa terjadi terutamanya pada CDI Racing. Kadang-kadang bila tanya foreman berkenaan CDI ni, jangan terkejut kalau dapat jawapan;-

"Semua CDI sama sahaja"
"Terpulang pada nasib"
"Aku pakai elok je brand ni"
"Jangan nak memandai-mandai"
"Aku pomen ke kau pomen?"

dan sebagainya sehingga menyakitkan hati pun ada. Jangan pulak korang cepat melatah atau 'down'. Sabar itu separuh daripada iman. Rilek-rilek sudah. Manusia ni ada pelbagai ragam.

Apa boleh anda lakukan sebelum beli CDI baru?
1) Cuba ganti dengan CDI lain terlebih dahulu. Pinjam kawan adalah terbaik.
2) Jika simptom diatas tiada, bermaksud CDI anda yang bermasalah.

Jika simptom diatas masih ada?
1) Cuba periksa Spark Plug.
2) Periksa Ignition Coil.
3) Periksa Coil Magnet.

My bike age is around 8 years old. I'm using this bike daily. One day, I've encountered a situation when doing my routine service to the bike. The color of the engine oil is brownish mixed with white color. This situation tells you that the coolant already goes into the engine.

How does the coolant can get into the engine? First, you must check your cylinder block. Check the gasket and water jacket around the cylinder block. Second, the coolant might slip from the water pump oil seal. If the cylinder block is in good condition, this mean that you need to do something with the water pump.

Usually the maintenance is done by changing the fan or impeller as well as the gasket and water pump seal that connect this part with the engine head. The cost of this maintenance is around RM50-60 only (not including the service charge).

The problem is, after a while the same problem will happen where the coolant still going into the engine. If you experience the same problem with me, the best solution is to 'Change the whole set' and it should last longer than you expect. You can get the original part (HLY) from as low as RM105 (complete set).

Why this problem still happen? It is because of the housing for the seal has worn out. This problem is due to the process of removing the seal.

Hey guys, look carefully at this piston (not the black/dirt part). This piston had been grind by some 'fcukin' foreman near my hometown. I was shocked looked at his works. But it was too late at that time because i was stupid, rookie. He said that nothing will happen, he just want to prevent the valve from hitting the piston. It's hard for me to say "to hell with his lying" at that time, and i just agree with his statement. What happen later? My RM300 spent on this 'fcukin' modification was sucks. No improvement. It was same as i'm using straight pipe exhaust. Top speed sucks! 6 month later, i went back to the same workshop and they said it was too late to check the bike and they can't do nothing because the foreman resign already. The worse part is, they said that i'm lying about the date that i do the modification over there. After that i'm straight away move my butt and wipe my footprints and start find the other workshop nearby. When they open the block, they said like this, "Who made this kind of modification? This is not modification but damaging the bike". The block was leaking and thank to god it was discovered early. Fcuk! Start from that time, i said to myself and my friends; "To hell with NS SPEED". This workshop located at Jalan Rasah, Seremban, Negeri Sembilan. They just know how to install the part, but they have zero knowledge in modification! Plus almost all the foreman there was a newbies. I'm not afraid to said this because it was true and always true. If you are owner of the workshop and read what i'm writing here, I'm ready to say that i am confidence to challenge any of your stupid creation with 135 machine for standard modification bike (carb, exhaust, block, clutch). How about that boss? Stupid workshop ever.