A Very Important and Painful Lesson (repost frm another thread I replied)

kyeong

Well-Known Member
Happy New Year brudders n sistas!

one of my thread regard to MISFIRING

check with bro Red Bean Bun

Red_Bean_Bun;1067583 said:
Misfiring ..... ? What did the scan reveal ?

hey brudder... ya man the misfiring... I wanna write a case study here to share with all of ya...
1) car shrudder like mad on day 1... assumption is jb petrol (shell).
2) then minutes later car resume normal... go sports mode at nite... everything fine:)
3) Day 3... car suddenly vibrate madly again... went ws and replace coil#6 (using bmwhat app diagnosis)...
4) cos it was late n ws has no stock on new ignition coil, so plug in used one (different model from the remaining 5
5) car was fine and running good (oki.. quite normal)
6) then on cny eve... I itchy finger bought a new coil frm ES (same model as the rest
7) remove coil#6 and plug the new pencil coil in...
8) F*ck my bloody itchy finger... car start vibrating like day 1...
9) drive slowly back home and parked car and cry... no more transport for cny...
10) think and think... only solution is to wait for ES to reopen after cny.. prepare to spent $300+ bucks to replace all coil...
11) Then today... cny day 1, I tulan... open bonnet... start swapping coils and try... worse... diagnosis came up with more coils failing n misfiring...
12) and when I twist one of the coil... the engine died.. mf*cker...
13) my brain go crazy...
14) Finally I unplugged all the coil wiring plug/cable... and plugged them back ... real hard pressing... and start car...
15) My mofo is back... MY MOFO IS BACK!!!!! Okay guys.. the problem is the pic below (look at the red circle)

View attachment 59216

guys... make sure the gap between the plug and the coil is super pressed tight. the car is old liao... vibration and heat might have push the plugs loose over time and that happened on my coil #6... hence... sometimes even mechanic also dunno wat happen... so solution change all coils... of course all will be unplugged and back... and they shld knw how to press the cable head in hard... a

and if the connection is loose or weak due to wear and tear... progressive resultant will be not so powerful performance ... bad fuel consumption... vibrations... lousy idling... and finally misfiring and stalling...

p.s. this is juz one of the possible diagnosis.. and solution... I am no mechanic... but was lucky enough today to solve my misfiring problem.

HAPPY NEW YEAR brudders n sistas!
 
Re: A Very Important and Painful Lesson (repost frm another thread I replied)

:thumbsup: i learned something new again!
 
Re: A Very Important and Painful Lesson (repost frm another thread I replied)

Can also see via the stats - look out for voltage leak when before and after the spark .....

Did you have a chance to take the spark plug out while you were there ?
 
Re: A Very Important and Painful Lesson (repost frm another thread I replied)

No bro.. I did not take out the spark plugs.. btw the spark plugs n coils are 2 months old.


Red_Bean_Bun;1067689 said:
Can also see via the stats - look out for voltage leak when before and after the spark .....

Did you have a chance to take the spark plug out while you were there ?
 
Re: A Very Important and Painful Lesson (repost frm another thread I replied)

bro, how to check voltage leak?


Red_Bean_Bun;1067689 said:
Can also see via the stats - look out for voltage leak when before and after the spark .....

Did you have a chance to take the spark plug out while you were there ?
 
Re: A Very Important and Painful Lesson (repost frm another thread I replied)

kyeong;1067729 said:
bro, how to check voltage leak?

Wet your hands and stick your fingers... where you shudnt? Oops.
 
Re: A Very Important and Painful Lesson (repost frm another thread I replied)

I think u r rite, seriously....

read frm google the water test method.

Meek;1067730 said:
Wet your hands and stick your fingers... where you shudnt? Oops.
 
Re: A Very Important and Painful Lesson (repost frm another thread I replied)

Its called "test water"... frequently used in singapore.
 
Re: A Very Important and Painful Lesson (repost frm another thread I replied)

I tested yr method today, gotten my small water spray for my plants n started spraying some water over to test. No shock. Guess it's all good? Oh, and I was wearing rubber gloves to prevent my hands gettin dirty. :nehnehhh:

Meek;1067734 said:
Its called "test water"... frequently used in singapore.
 

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