Unstable idling

[HaziqRais]

Recently i changed the spark plugs from original ones to ngk iridium ones.
After the change, i startup the car and the engine like tersedut.
We can hear the sedut sound from the exhaust too. But not too badly.
The mech said its normal bcs using iridium plugs. Is this true?

 

[thomzcruz80]

Check your throttle body as usual if idling prob. Or use bigger core spark cable

 

[HaziqRais]

So its not bcs of the iridium like the mech said?

 

[DanzEterna]

nola the mech TCSS....
yeah, use bigger plug cable 8mm good enuf..

 

[HaziqRais]

Okay thanks. What plug cables do you recommend?

 

[xtremeleo]

maybe u shud try to fit the old plugs and see if the problem is rectified? colder plugs will give the symtpom u have now, did u drop a colder iridium plugs? i prefer std plugs over the fancy ones fyi

 

[AD_EG]

wah ur mech seriously said that? please change mech for sake of your car and yourself bro...

please check if the plug you installed is the correct plug meant for your vehicle.

 

[DanzEterna]

try fitting the old plugs back 1st....
are u sure your plugs are the correct part number for yr car?

 

[MingFai]

I haven't heard that before...
Your mech that day never eat medicine izzit?
Iridium plugs wont be that happen...
My sense is
1. Cheak your plugs head see got Bengkok or stick to the sparked head there..
2. Did your Plug seal leak? Coz kena engine oil also will cos this problem...
3. Your mech got insert your plug and screw the plug nicely? If not will lari compression
4. Same as danz said change 10.1mm plug cable... Hoho...

Correct me if i am wrong...