Jump to content

shorty1978

Spark plug oily !

Recommended Posts

3 hours ago, shorty1978 said:

Thanks Scifi I’ve just gone from a 7 to a 5 so hopefully that may make a difference . 

BPR6ES would have been the educated choice.

Share this post


Link to post
Share on other sites

Just pulling the plug out to discover it’s oily is not the right way to go about checking the running of the engine and plug state. Letting the engine run down to idle will inevitably produce slight oil deposits on the plug due to the throttle being almost closed. What you should try is a ‘plug chop’....this entails getting the engine up to normal temp, riding the bike reasonably hard for a few minutes...with more constant engine speed if possible (farm track or trail) say 4-5000rpm then pull in the clutch and kill the engine all in the same instant...coast to a halt. Remove spark plug and it will show you the condition it was in at the time of stopping the engine running. You should see a nice even biscuit (rich tea) colour around the edge and the centre electrode should be clean with the earth electrode showing a slightly lighter biscuit colour. 

To all intents and purposes, from your description I wouldn’t worry and just get on and enjoy what sounds like a well set up engine, especially as it starts first kick! This is all a bit like reading a medical journey, before you were fit and healthy and now a few pages in you’ve got all the symptoms of some of the worst diseases known to man😪🤤🤧🤒🤢🤮😨😰😱☠️....👀👳‍♂️👨‍🔬🧟‍♀️

 

 

  • Like 1
  • Thanks 1

Share this post


Link to post
Share on other sites
5 hours ago, section swept said:

To all intents and purposes, from your description I wouldn’t worry and just get on and enjoy what sounds like a well set up engine, especially as it starts first kick! This is all a bit like reading a medical journey, before you were fit and healthy and now a few pages in you’ve got all the symptoms of some of the worst diseases known to man😪🤤🤧🤒🤢🤮😨😰😱☠️....👀👳‍♂️👨‍🔬🧟‍♀️

 

 

Forget the bike!  Get yourself down to A&E as quick as you can.  Don’t queue - go right to the counter and tell them Section sent you!   Why on earth would you have changed that plug , after all the reassurances?  Next , it’ll be an “Is this detonation?” thread.

I only ever remove spark plugs from cold engines.  Had a Relic 600cc Fiat 900t camper once. Took out a hot plug - and it never went back properly after that. You could even hear the swarf rattling in the combustion-chamber after screwing it back and starting up.  The Helicoil business in the 80’s thrived on idiots with inherited colourtune kits and over-eager right-arms.

Edited by Nebulous

Share this post


Link to post
Share on other sites
9 hours ago, Nebulous said:

Forget the bike!  Get yourself down to A&E as quick as you can.  Don’t queue - go right to the counter and tell them Section sent you!   Why on earth would you have changed that plug , after all the reassurances?  Next , it’ll be an “Is this detonation?” thread.

I only ever remove spark plugs from cold engines.  Had a Relic 600cc Fiat 900t camper once. Took out a hot plug - and it never went back properly after that. You could even hear the swarf rattling in the combustion-chamber after screwing it back and starting up.  The Helicoil business in the 80’s thrived on idiots with inherited colourtune kits and over-eager right-arms.

When you work in the service industry waiting around for plugs to cool down is a luxury that we don’t get. Fiat made there cylinder heads out of hard cheese so you would always wreck the threads, the twin cam engines both Fiat and Alfa Romeo not only used hard cheese but even angled the front and rear plugs differently to the no2 and3 plug holes. I’d the plug won’t go in with fingers or gloved to protect from heat to finger tight then somethings wrong....over eager right arms. With good right arms we threw the colourtunes as far as we could but that was in the late 60’s early 70s when those things that controlled the fuel ....oh what do you call them...oh yes carbs...were adjustable.

  • Haha 1

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

×