Spark plug change is easy right!
Post Reply    Forum -> General Discussion
Author Message
Member
Vespa LX 125
Joined: 02 Nov 2018
Posts: 39
Location: London
Tue Feb 11, 2020 11:40 am quote
While doing a service today on the lx125 ie 3v I thought I would change the spark and the old one came out easy it was a good colour but the central electrode had burnt back a bit. No worries a new iridium going in. Screw in nice and easy and I torque it up. Then I try to fit the plug cap and it doesn't want to fit....... Then I get the socket out again and that doesn't want to bite....... Get the torch and see the ruddy black rubber bung on the spark plug from the socket. It's deep this hole on the lx125ie 3v. That gets me thinking oh no valve cover off to get it etc. But after 20 minutes fiddling with a screw driver I finally get it off the PLUG. PHEW.

YOU HAVE BEEN WARNED....
Hooked
bv350, Brutale 910
Joined: 19 Jan 2011
Posts: 348
Location: LA CA
Tue Feb 11, 2020 11:48 am quote
should upgrade to a BV350. It's easy peazy. Insurance shouldn't go up too much either, right?
Veni, Vidi, Posti
Lx 50 4T, GTS 250, S 150 (Missing in KS), Something Chinese
Joined: 21 Feb 2011
Posts: 7891
Location: KS USA
Tue Feb 11, 2020 5:49 pm quote
Iredium spark plugs require a special spark plug boot.

Solution: get an HT coil approved by NASA from scooterWest
Hooked
Joined: 14 Aug 2019
Posts: 148
Location: Bermuda
Tue Feb 11, 2020 6:00 pm quote
Max6200 wrote:
Iredium spark plugs require a special spark plug boot.
Watchoo talkiní Ďbout, Willis? Not on my two scoots in which I installed them. Nothing different on these from various manufacturers.

https://www.championautoparts.com/Parts-Matter/automotive-repair-and-maintenance/Spark-Plug-Materials.html

https://www.caroutfitter.com/best-spark-plugs-reviews/
Veni, Vidi, Posti
Lx 50 4T, GTS 250, S 150 (Missing in KS), Something Chinese
Joined: 21 Feb 2011
Posts: 7891
Location: KS USA
Tue Feb 11, 2020 6:03 pm quote
Juan_ORhea wrote:
Max6200 wrote:
Iredium spark plugs require a special spark plug boot.
Watchoo talkiní Ďbout, Willis? Not on my two scoots in which I installed them. Nothing different on these from various manufacturers.

https://www.championautoparts.com/Parts-Matter/automotive-repair-and-maintenance/Spark-Plug-Materials.html

https://www.caroutfitter.com/best-spark-plugs-

reviews/
I don't know the scooters you have. You don't have them on your profile.
Hooked
Joined: 14 Aug 2019
Posts: 148
Location: Bermuda
Tue Feb 11, 2020 7:09 pm quote
I replaced perfectly functioning Champion plugs with Iridium plugs in a Buddy 50 and S 150.

The OP said the issue with his was the rubber friction ring from the socket getting stuck on the plug, not a problem with the plug.

(Iíve encountered the same problem but was too vain to mention/admit it.)

Thus I believe Iridium plugs are standard sizes and donít require special boots.

I also think Iridium plugs are statistically identical to standard plugs, and after hundreds of thousands of four-wheel driving miles have never found fault with plugs of lesser metals and marketing budgets.

Doubt Iíll buy another unless Iím trying to impress somebody.
Ossessionato
2016 Vespa GTS300ie abs/asr/ess Settantesimo '70'
Joined: 11 Jun 2011
Posts: 2521
Location: Starbase 1, East Anglia, The power house of the UK
Wed Feb 12, 2020 12:37 am quote
As Juan says, there is nothing different about Irridium spark plugs compared to standard plugs, accept for the electrode material and design life. Standard spark plug tools fit just the same.
Molto Verboso
150 Sprint Veloce,Vespa GTS 300
Joined: 22 Feb 2010
Posts: 1017
Location: St Neots Cambridgeshire England
Wed Feb 12, 2020 9:38 am quote
Re: Spark plug change is easy right!
melt wrote:
While doing a service today on the lx125 ie 3v I thought I would change the spark and the old one came out easy it was a good colour but the central electrode had burnt back a bit. No worries a new iridium going in. Screw in nice and easy and I torque it up. Then I try to fit the plug cap and it doesn't want to fit....... Then I get the socket out again and that doesn't want to bite....... Get the torch and see the ruddy black rubber bung on the spark plug from the socket. It's deep this hole on the lx125ie 3v. That gets me thinking oh no valve cover off to get it etc. But after 20 minutes fiddling with a screw driver I finally get it off the PLUG. PHEW.

YOU HAVE BEEN WARNED....
I can't even get the bloody spark plug cap off! right little bugger to prise off! I gave up in the end, but someday, I'm going to have to change the plug..

Graham
Member
Vespa LX 125
Joined: 02 Nov 2018
Posts: 39
Location: London
Wed Feb 12, 2020 10:05 am quote
Re: Spark plug change is easy right!
louswheel wrote:
I can't even get the bloody spark plug cap off! right little bugger to prise off! I gave up in the end, but someday, I'm going to have to change the plug..

Graham
You might have to spray some PTFE or WD40 around the cap for a bit of lubrication.
Veni, Vidi, Posti
2008 MP3 500, 2013 BV350, 2020 Vespa Sei Giorni
Joined: 13 Oct 2012
Posts: 8070
Location: Ashburn, Va. Home to the Internet
Wed Feb 12, 2020 11:29 am quote
Max6200 wrote:
Iredium spark plugs require a special spark plug boot.

Solution: get an HT coil approved by NASA from scooterWest
What? Not true, except for resistance differences you have caps for plugs with or with out nuts on the threads.
Ossessionato
2016 Vespa GTS300ie abs/asr/ess Settantesimo '70'
Joined: 11 Jun 2011
Posts: 2521
Location: Starbase 1, East Anglia, The power house of the UK
Thu Feb 13, 2020 2:32 am quote
Re: Spark plug change is easy right!
louswheel wrote:
melt wrote:
While doing a service today on the lx125 ie 3v I thought I would change the spark and the old one came out easy it was a good colour but the central electrode had burnt back a bit. No worries a new iridium going in. Screw in nice and easy and I torque it up. Then I try to fit the plug cap and it doesn't want to fit....... Then I get the socket out again and that doesn't want to bite....... Get the torch and see the ruddy black rubber bung on the spark plug from the socket. It's deep this hole on the lx125ie 3v. That gets me thinking oh no valve cover off to get it etc. But after 20 minutes fiddling with a screw driver I finally get it off the PLUG. PHEW.

YOU HAVE BEEN WARNED....
I can't even get the bloody spark plug cap off! right little bugger to prise off! I gave up in the end, but someday, I'm going to have to change the plug..

Graham
You do know the spark plug cap has a metal retaining clip holding it from coming off right?

To remove the cap, simply rotate the spark plug cap clockwise until the tail of the spark plug cap (the bit with the cable going into it) is pointing rearwards towards the back of the bike. Then with a long screwdriver placed under the tail of the spark plug cap as near to the centre of the cap as possible, simply gently lever the cap off. The screwdriver you are using should be long enough to rest against the cambox cover to act as the fulcrum lever point. It should come off easily.

There is not point spraying WD40 or anything with PTFE in it around the spark plug cap as it cannot reach the bit that is a tight fit. It needs to be a fairly tight fit.

EDIT: just noticed you have an LX125. Some of this may not apply. The above is for the GTS range of scooters...
Molto Verboso
150 Sprint Veloce,Vespa GTS 300
Joined: 22 Feb 2010
Posts: 1017
Location: St Neots Cambridgeshire England
Thu Feb 13, 2020 2:59 am quote
Re: Spark plug change is easy right!
Stromrider wrote:
louswheel wrote:
melt wrote:
While doing a service today on the lx125 ie 3v I thought I would change the spark and the old one came out easy it was a good colour but the central electrode had burnt back a bit. No worries a new iridium going in. Screw in nice and easy and I torque it up. Then I try to fit the plug cap and it doesn't want to fit....... Then I get the socket out again and that doesn't want to bite....... Get the torch and see the ruddy black rubber bung on the spark plug from the socket. It's deep this hole on the lx125ie 3v. That gets me thinking oh no valve cover off to get it etc. But after 20 minutes fiddling with a screw driver I finally get it off the PLUG. PHEW.

YOU HAVE BEEN WARNED....
I can't even get the bloody spark plug cap off! right little bugger to prise off! I gave up in the end, but someday, I'm going to have to change the plug..

Graham
You do know the spark plug cap has a metal retaining clip holding it from coming off right?

To remove the cap, simply rotate the spark plug cap clockwise until the tail of the spark plug cap (the bit with the cable going into it) is pointing rearwards towards the back of the bike. Then with a long screwdriver placed under the tail of the spark plug cap as near to the centre of the cap as possible, simply gently lever the cap off. The screwdriver you are using should be long enough to rest against the cambox cover to act as the fulcrum lever point. It should come off easily.
The HT lead looks like it isn't long enough to turn the spark plug around enough... It might need a new lead going to the plug..

Graham
Ossessionato
2016 Vespa GTS300ie abs/asr/ess Settantesimo '70'
Joined: 11 Jun 2011
Posts: 2521
Location: Starbase 1, East Anglia, The power house of the UK
Thu Feb 13, 2020 3:47 am quote
Re: Spark plug change is easy right!
louswheel wrote:
Stromrider wrote:
louswheel wrote:
melt wrote:
While doing a service today on the lx125 ie 3v I thought I would change the spark and the old one came out easy it was a good colour but the central electrode had burnt back a bit. No worries a new iridium going in. Screw in nice and easy and I torque it up. Then I try to fit the plug cap and it doesn't want to fit....... Then I get the socket out again and that doesn't want to bite....... Get the torch and see the ruddy black rubber bung on the spark plug from the socket. It's deep this hole on the lx125ie 3v. That gets me thinking oh no valve cover off to get it etc. But after 20 minutes fiddling with a screw driver I finally get it off the PLUG. PHEW.

YOU HAVE BEEN WARNED....
I can't even get the bloody spark plug cap off! right little bugger to prise off! I gave up in the end, but someday, I'm going to have to change the plug..

Graham
You do know the spark plug cap has a metal retaining clip holding it from coming off right?

To remove the cap, simply rotate the spark plug cap clockwise until the tail of the spark plug cap (the bit with the cable going into it) is pointing rearwards towards the back of the bike. Then with a long screwdriver placed under the tail of the spark plug cap as near to the centre of the cap as possible, simply gently lever the cap off. The screwdriver you are using should be long enough to rest against the cambox cover to act as the fulcrum lever point. It should come off easily.
The HT lead looks like it isn't long enough to turn the spark plug around enough... It might need a new lead going to the plug..

Graham
If you put the bike on it's side stand the engine will lower it's cylinder giving you just an inch or maybe two of extra cable. This is enough.
Molto Verboso
150 Sprint Veloce,Vespa GTS 300
Joined: 22 Feb 2010
Posts: 1017
Location: St Neots Cambridgeshire England
Thu Feb 13, 2020 4:00 am quote
Re: Spark plug change is easy right!
Stromrider wrote:
louswheel wrote:
Stromrider wrote:
louswheel wrote:
melt wrote:
While doing a service today on the lx125 ie 3v I thought I would change the spark and the old one came out easy it was a good colour but the central electrode had burnt back a bit. No worries a new iridium going in. Screw in nice and easy and I torque it up. Then I try to fit the plug cap and it doesn't want to fit....... Then I get the socket out again and that doesn't want to bite....... Get the torch and see the ruddy black rubber bung on the spark plug from the socket. It's deep this hole on the lx125ie 3v. That gets me thinking oh no valve cover off to get it etc. But after 20 minutes fiddling with a screw driver I finally get it off the PLUG. PHEW.

YOU HAVE BEEN WARNED....
I can't even get the bloody spark plug cap off! right little bugger to prise off! I gave up in the end, but someday, I'm going to have to change the plug..

Graham
You do know the spark plug cap has a metal retaining clip holding it from coming off right?

To remove the cap, simply rotate the spark plug cap clockwise until the tail of the spark plug cap (the bit with the cable going into it) is pointing rearwards towards the back of the bike. Then with a long screwdriver placed under the tail of the spark plug cap as near to the centre of the cap as possible, simply gently lever the cap off. The screwdriver you are using should be long enough to rest against the cambox cover to act as the fulcrum lever point. It should come off easily.
The HT lead looks like it isn't long enough to turn the spark plug around enough... It might need a new lead going to the plug..

Graham
If you put the bike on it's side stand the engine will lower it's cylinder giving you just an inch or maybe two of extra cable. This is enough.
I'll give that a go- I had the scooter on the centre stand, and I couldn't get enough slack on the HT lead to turn the cap around, but I'll try that little trick!

Graham
Ossessionato
2016 Vespa GTS300ie abs/asr/ess Settantesimo '70'
Joined: 11 Jun 2011
Posts: 2521
Location: Starbase 1, East Anglia, The power house of the UK
Thu Feb 13, 2020 4:55 am quote
It maybe that on the LX there is no spark plug retaining clip. On the GTS you only have to move the spark plug cap about one quarter turn to the rear. But the cap will come off with a long screwdriver or even very long needle nose pliers used as a lever against the cylinder head. Not too much force is required. Do not lever against any cylinder head fins as this could break them.
Veni, Vidi, Posti
Lx 50 4T, GTS 250, S 150 (Missing in KS), Something Chinese
Joined: 21 Feb 2011
Posts: 7891
Location: KS USA
Thu Feb 13, 2020 3:14 pm quote
Stromrider wrote:
It maybe that on the LX there is no spark plug retaining clip. On the GTS you only have to move the spark plug cap about one quarter turn to the rear. But the cap will come off with a long screwdriver or even very long needle nose pliers used as a lever against the cylinder head. Not too much force is required. Do not lever against any cylinder head fins as this could break them.
Your remarks are somewhat irrelevant to the original post. We're not talking about a GTS.
Ossessionato
2016 Vespa GTS300ie abs/asr/ess Settantesimo '70'
Joined: 11 Jun 2011
Posts: 2521
Location: Starbase 1, East Anglia, The power house of the UK
Sat Feb 15, 2020 3:01 am quote
Max6200 wrote:
Stromrider wrote:
It maybe that on the LX there is no spark plug retaining clip. On the GTS you only have to move the spark plug cap about one quarter turn to the rear. But the cap will come off with a long screwdriver or even very long needle nose pliers used as a lever against the cylinder head. Not too much force is required. Do not lever against any cylinder head fins as this could break them.
Your remarks are somewhat irrelevant to the original post. We're not talking about a GTS.
Yes Max, I pointed that out in my earlier posts when I realised it was the LX. But the principles are just the same. It's been a very long time since I serviced an LX.
Team Scooter Trash for Petfinder Foundation   vespa scooterwest scooter west Motorsport Scooters   Scooter Parts Company
Post Reply    Forum -> General Discussion
[ Time: 0.1285s ][ Queries: 26 (0.0335s) ][ Debug on ]