same la.. that time DIY dcarbo.. kena like that also..

nope, decarbo not necessary to change spark plug....
nope, knocking sound doesnt mean sparkplug damage...
after decarbo, combustion chamber becomes cleaner.... carbon reduced, better combustion, increased in temperature a little causing minor knocking sound....

jz check ur plugs if they needed changing... if its too old, its recommended to change them....
not sure what sparkplug best suits b16a though... to me, all the same....

yes usually spark plugs are fouled after steam cleaning or decarbonising the engine..you need to change the spark plugs asap..

the most logical explanation is carbon will be all over your plugs at the tip and L-shaped grounded after decarbonisation....carbon can conduct electricity...this will make ur plugs not firing smoothly or none at all.

but after decarbo, combustion chamber will be cleaned and free of carbon... why u still say there are carbon covering the plugs causing it to fire not smoothly??...

decarbo means removing the carbon... not adding carbon rite??...

Maybe this one better hehe...the spark plugs were spoilt DURING the decarbonisation itself..carbon covering spark plugs then they couldn't fire properly..

the rule is change the spark plugs straightaway after decarbonisation.

How come the threaded parts of the plug are all brown up to the washer? My plugs at 20k only have the browning for 2-3 rounds only

brown as in oily or what??... if oily means somewhere is leaking... beware... if dry brown normal la... engine is alwiz dirty....

Cool! I came to the right place. I have a Proton Savvy 2009. The comments here have been very useful. Thanks for posting the pictures of the old spark plugs hypermount. Gives me an idea what to do. I have the same problem I got the Fault code:p0335 and p0303 misfire.

I checked my coil plugs and found two orange and white stains on the bottom of the plugs:


If I change the spark plug will this solve the problem? I noticed everyone here is talking about the type of spark plugs to use. What if my local store has only NGK brand spark plug for Proton Savvy:
http://www.ebay.com.au/itm/NGK-Spark-Plug-...=item33ae0234d8

Seems like I got no response from this thread since Feb?

Where is my post count? Thanks

This post has been edited by crazyapes2016: Aug 23 2016, 08:16 PM

Again! No one responded here? Come on guys, it's a new year now.

Can someone please tell me what tool to use for the ignition coil bolt? It has a star or allen slot? To make harder it is damn closer towards the windscreen?