Spark plug fire spark at outside of the engine??????

cheng_Y

Junior Member
Aug 5, 2011
17
1
503
Kuala Lumpur
Car : WIra SE 1.5 EFI Siemen VDO

Issue :
- The spark plug spark/fire spark at outside of the engine block.
- Intermitend not every time.

Effect :
- Engine not running smooth when idling.
- Some time engine will mati.

Action taken :
- I change plug cable (Aro speed 10.4mm)
- Change coil - Bosch German made.
- Change spark plug (Normal type RM25, gap setting 0.7mm)
- Change Map sensor.
- Change crank sensor.
- Top overhaul.

Finally :

PROBLEM UNSOLVE!!!!

What could be wrong?????? PLEASE HELP????
 

ken yeang

6,000 RPM
Senior Member
Feb 2, 2006
6,617
1,327
1,713
I used to have the problem, until I changed to a set of new spark plug cables. The old cables insulation developed cracks, and spark "flew".

Perhaps you should check electrical grounding cable/wiring in the engine compartment.
 

Izso

NA NA NA NA NA
Helmet Clan
Moderator
Mar 28, 2004
15,389
6,411
5,213
KL
I just noticed you changed to the Aro (speed I assume) plug cable.. why la? The best 'cheap' one is still stock, ie- bougicord. Try using back your old cables or try swapping with a friend and see if it solves the problem.
 

Random Post Every 5 Minutes

hello to all sifus here..

Actually,i have probs with my engine..
1st is i juz install new adj cam pulley...
then after that i install new wastegate,
donno which brand but assume as imitation
size 38mm. After tuning my car,my engine was
rev with big sound..but the boost are geting low than before..
now my boost was too low..it juz 0.6bar!!!!!

but when i tight my spring w.gate,no sound are listening even
in high boost..1.1bar..:banghead:
i dont know y..should be my wastegate...
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