XJR-S Sparkplugs
#1
04-30-2016, 05:28 PM
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XJR-S Sparkplugs
I am sprucing up my XJR-S with clean through of the injectors and a change of sparkplugs.
The current plugs are Champion RS6YCC but I can't find them available in the UK. Can anyone help me find what would be the equivalent plug and are iridium plugs acceptable to use in a 6L V12?
The current plugs are Champion RS6YCC but I can't find them available in the UK. Can anyone help me find what would be the equivalent plug and are iridium plugs acceptable to use in a 6L V12?
#2
04-30-2016, 10:19 PM
Veteran Member
I am sprucing up my XJR-S with clean through of the injectors and a change of sparkplugs.
The current plugs are Champion RS6YCC but I can't find them available in the UK. Can anyone help me find what would be the equivalent plug and are iridium plugs acceptable to use in a 6L V12?
The current plugs are Champion RS6YCC but I can't find them available in the UK. Can anyone help me find what would be the equivalent plug and are iridium plugs acceptable to use in a 6L V12?
Bosch Spark Plug HR5DC 0242245527 EQV to RS6YCC T22EPU IT22 T8LC FER75P | eBay
#5
05-12-2016, 03:56 AM
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I have put the new Bosch plugs in and re fitted the air con unit and the freshly cleaned fuel rail, reconnected all the harness but .......
....... no spark for some reason. I did have a spark beforehand but none now and I am struggling to find out why.
I can see a low voltage of around 6 volts going into the amplifier but nothing going out to the coil when I crank the engine.
I know I have fuel pressure as a leak occurred, fixed with a jubilee clip.
....... no spark for some reason. I did have a spark beforehand but none now and I am struggling to find out why.
I can see a low voltage of around 6 volts going into the amplifier but nothing going out to the coil when I crank the engine.
I know I have fuel pressure as a leak occurred, fixed with a jubilee clip.
#6
05-12-2016, 01:16 PM
I have put the new Bosch plugs in and re fitted the air con unit and the freshly cleaned fuel rail, reconnected all the harness but .......
....... no spark for some reason. I did have a spark beforehand but none now and I am struggling to find out why.
I can see a low voltage of around 6 volts going into the amplifier but nothing going out to the coil when I crank the engine.
I know I have fuel pressure as a leak occurred, fixed with a jubilee clip.
....... no spark for some reason. I did have a spark beforehand but none now and I am struggling to find out why.
I can see a low voltage of around 6 volts going into the amplifier but nothing going out to the coil when I crank the engine.
I know I have fuel pressure as a leak occurred, fixed with a jubilee clip.
Mark
#7
05-13-2016, 07:26 AM
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Could be the wrong plugs
So, I managed to get the car started but with huge amount of blue smoke and misfiring, worse than it was before the injector clean.
Spoke to a few poeple and they say the sparkplugs are probably the wrong ones, even though they were stated on the conversion website.
So I could be back to square 1, trying to find the right plugs and then sourcing them.
I would put the old ones back in but I busted 4 getting them out, soon found out that the ac unit had to be removed.
Spoke to a few poeple and they say the sparkplugs are probably the wrong ones, even though they were stated on the conversion website.
So I could be back to square 1, trying to find the right plugs and then sourcing them.
I would put the old ones back in but I busted 4 getting them out, soon found out that the ac unit had to be removed.
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#8
05-13-2016, 09:18 AM
Veteran Member
So, I managed to get the car started but with huge amount of blue smoke and misfiring, worse than it was before the injector clean.
Spoke to a few poeple and they say the sparkplugs are probably the wrong ones, even though they were stated on the conversion website.
So I could be back to square 1, trying to find the right plugs and then sourcing them.
I would put the old ones back in but I busted 4 getting them out, soon found out that the ac unit had to be removed.
Spoke to a few poeple and they say the sparkplugs are probably the wrong ones, even though they were stated on the conversion website.
So I could be back to square 1, trying to find the right plugs and then sourcing them.
I would put the old ones back in but I busted 4 getting them out, soon found out that the ac unit had to be removed.
Marelli Ignition failure and rough running is more caused by bad rotors and caps than plugs...
the plugs get gunked up as a result....
I am sure you gapped and indexed them before installing the plugs...
and made sure all injectors are plugged into the correct wires...
remember they are grouped 135 and 246 those groups should inject together at the same time...
I am sure you did all that and it is ok to flame me...
#9
05-13-2016, 09:29 AM
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No I didn't replace the cap or rotor as she was running better before but just on 11 than she is now.
All the leads are correct and the plugs i checked for gap.
I have contacted Denso direct and NGK and they are struggling to cross check the plugs for the right one, whether it should be projected or not is one question but no one is absolutely sure which is the right or wrong plug and they don't seem to trust the sparkplug cross-reference website.
All the leads are correct and the plugs i checked for gap.
I have contacted Denso direct and NGK and they are struggling to cross check the plugs for the right one, whether it should be projected or not is one question but no one is absolutely sure which is the right or wrong plug and they don't seem to trust the sparkplug cross-reference website.
#10
05-13-2016, 09:36 AM
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#11
05-13-2016, 09:37 AM
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So, I managed to get the car started but with huge amount of blue smoke and misfiring, worse than it was before the injector clean.
Spoke to a few poeple and they say the sparkplugs are probably the wrong ones, even though they were stated on the conversion website.
So I could be back to square 1, trying to find the right plugs and then sourcing them.
I would put the old ones back in but I busted 4 getting them out, soon found out that the ac unit had to be removed.
Spoke to a few poeple and they say the sparkplugs are probably the wrong ones, even though they were stated on the conversion website.
So I could be back to square 1, trying to find the right plugs and then sourcing them.
I would put the old ones back in but I busted 4 getting them out, soon found out that the ac unit had to be removed.
Man I am sorry this is giving to so much trouble... the only bright side I see is that you are making this easier for some one else that has the XJR-S, My hat is off to you!
Marelli Ignition link to neat stuff
Last edited by Jonathan-W; 05-13-2016 at 09:46 AM.
#13
05-13-2016, 01:12 PM
Veteran Member
found this site
Champion RS6YCC - Alternative spark plugs
and I could not use Champion N9Y s in my Austin healy they would last until I pulled hard once then let off the gas.... had to use Bosh W200*** I could drive like LL with those.... 8500-9000 and then let off...
and this site
https://sites.google.com/site/sloppy...ls/spark-plugs
Champion RS6YCC - Alternative spark plugs
and I could not use Champion N9Y s in my Austin healy they would last until I pulled hard once then let off the gas.... had to use Bosh W200*** I could drive like LL with those.... 8500-9000 and then let off...
and this site
https://sites.google.com/site/sloppy...ls/spark-plugs
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