PSA: NGK spark plugs superseded?

1986-1995 : 200TD, 200CE, E200, 260E, 300E 2.6, 300E 2.8, 300E, E320, 400E, E420, 500E, E500, 300CE, E320, 230TE, 300TE, 300D 2.5 TURBO, E300 DIESEL, 300TD, 300E 4MATIC, 300TE 4MATIC, E36 AMG
Post Reply
Ali_Boz
C Class
Posts: 42
Joined: Wed 09 Mar, 2016 10:40 am
Model you own: w124

PSA: NGK spark plugs superseded?

Post by Ali_Boz » Sun 15 Oct, 2017 4:58 pm

Hi all,

Went into the local repco after a set of NGK BP6EFS plugs for my 300TE however they told me they had been superseded by a R type plug so I bought the BP6EFS-13 plugs instead. However the another auto store had the BP6EFS in stock so be weary which store you're at to make sure you get the non-resistor copper plugs if they're the ones you want.

thanks
1991 w124 300TE
1993 w124 300TE 2.8 R.I.P

User avatar
MercMad West Australian
450 SEL 6.9
Posts: 461
Joined: Sun 08 Dec, 2013 2:23 pm
Model you own: I own multiple different models
Location: Perth

Re: PSA: NGK spark plugs superseded?

Post by MercMad West Australian » Tue 17 Oct, 2017 10:45 am

theres tons on ebay.

What are these plugs used for ?

I bought all remaining new old stock champion and bosch plugs factory specified for my australia version m104.980 and will continue to do so as they show up. One will have to pry them from my cold dead hands if they wanted any. :rr:
MMWA

Ali_Boz
C Class
Posts: 42
Joined: Wed 09 Mar, 2016 10:40 am
Model you own: w124

Re: PSA: NGK spark plugs superseded?

Post by Ali_Boz » Tue 17 Oct, 2017 11:41 pm

I have a workshop manual that recommends the NGK BP6EFS plugs and I've used them hassle free as they are/were available at retail outlets. What are the stock numbers for the champion and bosch plugs?

not too sure where you'd use the -13 or the R but I don't think they're for a 103/104
1991 w124 300TE
1993 w124 300TE 2.8 R.I.P

gjlockyer
Maybach
Posts: 217
Joined: Mon 29 Sep, 2008 1:17 pm
Model you own: w124
Location: Boronia VIC 3155

Re: PSA: NGK spark plugs superseded?

Post by gjlockyer » Wed 15 Nov, 2017 2:32 am

Just got a pack of 36 NGK BP6EFS plugs from an Australian eBay seller for $42 post paid. Yes 36 plugs for $42! Picked them up from a local Woolworths Supermarket parcel collection point. Should keep me (and the car) going for a bit. Unfortunately I got the last of them from him.
Gary
1955 220a (1972-80) 1961 220SEb (1980-95)
1988 190E (2008-10/14) 1988 260E (11/2014-07/15)
1990 300E 2.6 (08/2015-07/17) Current car: 1991 300E 2.6

gjlockyer
Maybach
Posts: 217
Joined: Mon 29 Sep, 2008 1:17 pm
Model you own: w124
Location: Boronia VIC 3155

Re: PSA: NGK spark plugs superseded?

Post by gjlockyer » Fri 01 Dec, 2017 11:04 am

OK, now for the bad news. Just changed the plugs on the 300E 2.6 I drove down from Queensland for months back. Original owner and just 152,000K, and at a very good price but uncertain maintenance over the past decade using any old garage that was handy. I figured the great body and interior was worth any hassles that I found. Mostly the problems have been lack of preventative maintenance and easily fixed.
Just pulled the plugs that were in the car - Bosch FR7DC4, totally wrong plugs, square seats, not tapered and with a washer. Five changed out OK but at No4 cylinder, I can't tighten the plug up; the thread is damaged in some way. The plug is reasonably tight, but if pressed any further it just keeps turning round. Looks like I'm going to be up for a head job. I'll probably take the the head off my parts car and do it up in my own (slow) time. Alternatively, anyone know if its possible to repair the damaged thread without taking the head off?
In any case, an object lesson to use the correct parts! Using the correct plugs also immediately fixed the slight hesitation when starting off and acceleration is much better. A very pronounced improvement!
Gary
1955 220a (1972-80) 1961 220SEb (1980-95)
1988 190E (2008-10/14) 1988 260E (11/2014-07/15)
1990 300E 2.6 (08/2015-07/17) Current car: 1991 300E 2.6

User avatar
Bartman4800
300 SLR
Posts: 1727
Joined: Fri 10 Oct, 2008 12:10 am
Model you own: w111
Location: Perth WA

Re: PSA: NGK spark plugs superseded?

Post by Bartman4800 » Fri 01 Dec, 2017 12:07 pm

You can buy a kit (quite cheaply) with a helicoil to repair 1 spark plug port.
It drills and taps in the same go.

About 50 aud; Repco sells them and probably others.
Sealing of the plug is still on the conical seat so makes no difference.


Bart
1963 220 Sb Sedan "Kermit" (Australian Assembly)
1960 220 Sb Sedan "Zum Schlachten" (Early German Assembly, with a torsion bar spring for the bonnet) - Stored in Country WA
1981 Subaru Brumby 1.8 with Weber and 5-speed box "little utie" - Sold to another enthusiast!
2006 Ford Focus "missus car"
2002 VW Passat V6 30V Station Wagon (my new commuter bus)

User avatar
Lance
Adenauer
Posts: 323
Joined: Thu 06 Mar, 2014 9:33 pm
Model you own: w114
Location: Altona Meadows, Melbourne

Re: PSA: NGK spark plugs superseded?

Post by Lance » Fri 01 Dec, 2017 12:20 pm

I've seen those advertised but how do you prevent the swarf from falling into the combustion chamber?
Regards,
Lance Smart

W114 280E 5 speed manual
W123 280E

User avatar
Bartman4800
300 SLR
Posts: 1727
Joined: Fri 10 Oct, 2008 12:10 am
Model you own: w111
Location: Perth WA

Re: PSA: NGK spark plugs superseded?

Post by Bartman4800 » Fri 01 Dec, 2017 1:02 pm

You put a lot of grease on the cutouts of the tap. The swarf will stick on that.

The rest is blown out with the air gun. Make sure your engine is in compression stroke on that cylinder so the valves are closed.


Regards, Bart
1963 220 Sb Sedan "Kermit" (Australian Assembly)
1960 220 Sb Sedan "Zum Schlachten" (Early German Assembly, with a torsion bar spring for the bonnet) - Stored in Country WA
1981 Subaru Brumby 1.8 with Weber and 5-speed box "little utie" - Sold to another enthusiast!
2006 Ford Focus "missus car"
2002 VW Passat V6 30V Station Wagon (my new commuter bus)

User avatar
Ivanerrol
Mercedes Demigod
Posts: 5554
Joined: Sat 12 May, 2007 3:21 pm
Model you own: w204
Location: Melbourne

Re: PSA: NGK spark plugs superseded?

Post by Ivanerrol » Fri 01 Dec, 2017 6:21 pm

If you are not confidant of doing it yourself, there are mechanics who will do it for you. Some even come to where your car is.
W211 - E240
W204 - C280
W202 - C180
W210 - E240
Departed
W202 - C200
W202 - C180 - On consignment to nephew
W126 - 380SE , 380SE (Ex SA Import), 560SEL
W124 - 300e, 260e (ex Japan)
W111 220s (Indonesia) 4 speed manual column shift
W123 230
W116 450SEL
W140 420SEL
W210 E240
W209 CLK 240
W201 190e 2.6 (ex U.K.)

gjlockyer
Maybach
Posts: 217
Joined: Mon 29 Sep, 2008 1:17 pm
Model you own: w124
Location: Boronia VIC 3155

Re: PSA: NGK spark plugs superseded?

Post by gjlockyer » Sun 03 Dec, 2017 12:47 am

Thank you one and all for your help. I thought that the head had to be off for the helicoil procedure. I'll follow it up and get it done asap. The plug has not come loose after 200 k's around town. I've taken it out and wiped off most of the small dab of applied copper grease - I wouldn't mind if the plug seized up a bit! but I will get an experienced mechanic to put a helicoil in as I don't think I'll attempt it myself.
Last edited by gjlockyer on Mon 04 Dec, 2017 8:53 pm, edited 1 time in total.
Gary
1955 220a (1972-80) 1961 220SEb (1980-95)
1988 190E (2008-10/14) 1988 260E (11/2014-07/15)
1990 300E 2.6 (08/2015-07/17) Current car: 1991 300E 2.6

gjlockyer
Maybach
Posts: 217
Joined: Mon 29 Sep, 2008 1:17 pm
Model you own: w124
Location: Boronia VIC 3155

Re: PSA: NGK spark plugs superseded?

Post by gjlockyer » Mon 04 Dec, 2017 7:48 pm

Now some good news, but a mystery! After a lengthy run I checked the suspect plug to make sure it was still as tight as I could get it - and it seated home perfectly! Couldn't believe it, so I took it out entirely and then put it back, again to the correct torque. No sign of it refusing to fully tighten up and keep turning. I'll keep checking it for a bit, but it seems that it has fixed itself. Can't explain it; beyond my experience (and I'd love a dollar for every plug I've ever changed), but I'm smiling!
Gary
1955 220a (1972-80) 1961 220SEb (1980-95)
1988 190E (2008-10/14) 1988 260E (11/2014-07/15)
1990 300E 2.6 (08/2015-07/17) Current car: 1991 300E 2.6

Post Reply

Return to “W124”