MK5 Golf GTI

All Things Mk5 => How to Guides / Troubleshooting => Topic started by: berg on June 17, 2014, 04:05:41 PM

Title: Nology Silver plugs - reported problems?
Post by: berg on June 17, 2014, 04:05:41 PM
I saw in another thread Alex was going to give some feedback on the above but dont think he has?

I had an issue last week and only just got the car scanned today - just came up as random misfire so no hint it could be throttle body or PCV and car seems to be driving ok now.

Was wondering if could be due to the Nology's as if they run colder like the NGK 8's and i had been tootling round due to rush hour but then later on when trying to boot it they had got a lot of carbon deposit on and did not take kindly to the request? Not had chance to take them out and inspect them yet but will be doing so.

Anyone else swapped back to NGK 7's??
Title: Re: Nology Silver plugs - reported problems?
Post by: rich83 on June 17, 2014, 04:09:05 PM
I swapped back to NGK Iridiums.

I would advise anyone running nology plugs to do the same or just put in similar OEM spec plugs. The problem stems from the fact they have no resistance, so it can play hell with the electrics, accelerating failures.

List of known issues...

Throttle Bodies dying.
Coil Packs melting/blowing up.
Radio Interference.
Intake flapper motor fault code errors

Title: Re: Nology Silver plugs - reported problems?
Post by: Simon_2.0t on June 17, 2014, 04:16:58 PM
Best I change mine then  :sad1:
Title: Re: Nology Silver plugs - reported problems?
Post by: berg on June 17, 2014, 04:19:52 PM
I swapped back to NGK Iridiums.

I would advise anyone running nology plugs to do the same or just put in similar OEM spec plugs. The problem stems from the fact they have no resistance, so it can play hell with the electrics, accelerating failures.

List of known issues...

Throttle Bodies dying.
Coil Packs melting/blowing up.
Radio Interference.






Mmmm not good at all. I thought Alex thought they were the bees' knees? and Nikki too ftm
Title: Re: Nology Silver plugs - reported problems?
Post by: rich83 on June 17, 2014, 04:21:38 PM
Yes... thats correct. They do work well, and I had no running problems/misfires etc. The issue has been that over time these electrical problems have come up, problems that don't always arise just after fitting.
Title: Re: Nology Silver plugs - reported problems?
Post by: bacillus on June 17, 2014, 04:23:50 PM
You could also get intake flapper motor fault code errors on vcds...   :scared:
Title: Re: Nology Silver plugs - reported problems?
Post by: fab5freddy on June 17, 2014, 04:31:18 PM
You could also get intake flapper motor fault code errors on vcds...   :scared:

^^^ This

I lost a throttle body also when i had these fitted. Coincidence? Maybe? Who knows
Title: Re: Nology Silver plugs - reported problems?
Post by: bacillus on June 17, 2014, 04:43:25 PM
You could also get intake flapper motor fault code errors on vcds...   :scared:

^^^ This

I lost a throttle body also when i had these fitted. Coincidence? Maybe? Who knows

On a brighter note, the latest version throttle bodies are supposed to be better than the earlier versions...   :smiley:
Title: Re: Nology Silver plugs - reported problems?
Post by: fab5freddy on June 17, 2014, 05:03:16 PM
You could also get intake flapper motor fault code errors on vcds...   :scared:

^^^ This

I lost a throttle body also when i had these fitted. Coincidence? Maybe? Who knows

On a brighter note, the latest version throttle bodies are supposed to be better than the earlier versions...   :smiley:

Glass half full  :happy2:
Title: Re: Nology Silver plugs - reported problems?
Post by: gazbutS3 on June 17, 2014, 05:23:46 PM
now then, I'm running the Nology's and have had the throttle body issue, scanned at the weekend and have the intake runner fault code mmmmmmm
Title: Re: Nology Silver plugs - reported problems?
Post by: mvb12 on June 17, 2014, 05:24:51 PM
I swapped back to NGK Iridiums.

I would advise anyone running nology plugs to do the same or just put in similar OEM spec plugs. The problem stems from the fact they have no resistance, so it can play hell with the electrics, accelerating failures.

List of known issues...

Throttle Bodies dying.
Coil Packs melting/blowing up.
Radio Interference.
Intake flapper motor fault code errors



Think Alex should jump in and clarify the situation, i'm under the assumption the throttle bodies are not dying but VCDS has no way of telling you the spark plugs are at fault but for some reason says the TB is goosed.

Never heard of coil packs blowing up, who had this failure due to the plugs?
Title: Re: Nology Silver plugs - reported problems?
Post by: Nodz on June 17, 2014, 07:26:05 PM
I'm running these since the last major service and have had the TB go on me... Is it urgent to change them now or can it wait til the service in September?
Title: Re: Nology Silver plugs - reported problems?
Post by: rich83 on June 17, 2014, 07:32:19 PM
I'm running these since the last major service and have had the TB go on me... Is it urgent to change them now or can it wait til the service in September?
Id change them... its dead easy (when your watching someone else doing it  :smiley: )
Title: Re: Nology Silver plugs - reported problems?
Post by: George on June 17, 2014, 07:39:43 PM
I was running Nology plugs and had throttle body symptons, I've swapped back to 7s now  :happy2:
Title: Re: Nology Silver plugs - reported problems?
Post by: Hurdy on June 17, 2014, 07:40:04 PM
Steve Jr at Statller fitted some to a few cars including mine.

Mine also ended up with several faults showing including the runner flap and throttle body. They were swapped out for Iridiums and the faults never re-occurred.  :happy2:

The best combination for lower tuned cars seems to be R8 coilpacks and OEM plugs and for stage 2+ and beyond to swap to Iridiums.  :happy2:

Steve swapped out the other customers cars he fitted Nologys with for Iridiums too.
Title: Re: Nology Silver plugs - reported problems?
Post by: George on June 17, 2014, 07:49:41 PM
Are those NGK 7s Hurdy?

Why are R8 coilpacks better?
Title: Re: Nology Silver plugs - reported problems?
Post by: berg on June 17, 2014, 09:37:33 PM
Thought we all would have heard about this a bit sooner tbh
Title: Re: Nology Silver plugs - reported problems?
Post by: Simon_2.0t on June 18, 2014, 08:29:26 PM
Just ordered a set of OEM NGKs  :happy2:
Title: Re: Nology Silver plugs - reported problems?
Post by: vRSAlex on June 19, 2014, 02:55:04 PM
I've been working on a thread for a while tbh.  Just not had time to get it done.

It has come to my attention that the Nology plugs are indeed no good for any coil pack based car.  Nology deny that there is an issue.

They don't ultimately cause electrical faults, but the nature of the non resisted plug does.  Although a plug that had dropped in resistance can also cause gremlins.  The plugs highlight an issue, and either swapping the component to the latest revision, or fitting new resisted plugs in, resolves the issue.

I have however had a coil pack overheat and catch fire from having no resisted plugs fitted.

Every car that comes back in that has had the Nology plugs fitted will get a new set of NGK BKR7EIX plugs fitted for just the cost of the plugs.

If anyone wants the NGK swap over from the Nology plugs then please give me a call on 01234 822324 to book in.
Title: Re: Nology Silver plugs - reported problems?
Post by: berg on June 19, 2014, 03:13:04 PM
I've been working on a thread for a while tbh.  Just not had time to get it done.

It has come to my attention that the Nology plugs are indeed no good for any coil pack based car.  Nology deny that there is an issue.

They don't ultimately cause electrical faults, but the nature of the non resisted plug does.  Although a plug that had dropped in resistance can also cause gremlins.  The plugs highlight an issue, and either swapping the component to the latest revision, or fitting new resisted plugs in, resolves the issue.

I have however had a coil pack overheat and catch fire from having no resisted plugs fitted.

Every car that comes back in that has had the Nology plugs fitted will get a new set of NGK BKR7EIX plugs fitted for just the cost of the plugs.

If anyone wants the NGK swap over from the Nology plugs then please give me a call on 01234 822324 to book in.


Hi Alex, thanks for the info, can you post the plugs out as not going to be get in to see you just to have the plugs swapped over. Ta, Andy
Title: Re: Nology Silver plugs - reported problems?
Post by: danishmkvgti on June 19, 2014, 03:41:10 PM
Hmm, what my Okada coilpacks highlighted then, by 2 of them catching fire. That's the way of tuning though  :smiley:
Title: Re: Nology Silver plugs - reported problems?
Post by: murph81 on December 17, 2014, 11:28:34 PM
Damn it, I bought a set of these too because they were supposed to be the business  :sad1:
Title: Nology Silver plugs reported problems
Post by: BarryGog on July 09, 2019, 01:12:20 PM
if you are worried about cold plugs then warm them up before fitting them, personally I fit plugs when the engine is cold or luke warm