Front Spark Plug

[dizzyblonde]

don't talk to me about spark plugs. still attempting to find someone out there who supplys plug caps for the raptor

Well...I took the plug back out last night - and with WD40 and copaslip re-inserted it, took it out, cleaned the crud off - did this about 6 times, and finally got the plug in a lot further - the rubber cap now fits into the recess of the plug hole on the cylinder head much better now.

When I was tightening, you can hear the crunching as the threads get caught up in the crud - i was careful though and didnt tighten it up too much. Just wondering if anyone has used one of these for cleaning out the crud from the threads of the spark plug hole?

Spark Plug Thread Chaser 10 & 12mm
Code: Sealey VS524 Spark Plug Thread Chaser 10 & 12mm

Specification

Model No:VS524
Plug Size:10 & 12mm
Price: £8.52

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Or are they for re-tapping a threaded hole?

Am tempted to use vaseline on the rubber cap to try to stop anything else getting in there too...

[yorkie_chris]

Well, silicone grease is much better than vaseline and cheap enough from maplin.

A thread "chaser" is for finishing or cleaning threads, the only problem is I doubt it will fit down the hole, and if it will then a socket to get hold of it probably won't.

Try a small bottle brush or something like to clean the threads, that and **** it with WD, the backfiring doesnt do any harm (IMO) and has only ever happened to me once.

Originally Posted by yorkie_chris

Well, silicone grease is much better than vaseline and cheap enough from maplin.

A thread "chaser" is for finishing or cleaning threads, the only problem is I doubt it will fit down the hole, and if it will then a socket to get hold of it probably won't.

Try a small bottle brush or something like to clean the threads, that and **** it with WD, the backfiring doesnt do any harm (IMO) and has only ever happened to me once.

Cheers Chris - what about the crud going into the front cylinder - I was going to do that last night, but didnt want to do the valves any damage.

I'll get me hands on some silicone grease - in the meantime I've got silicone spray which will have to do...

[yorkie_chris]

Well that does concern me, but whats worse? accelerated wear of cylinders and valves (if at all) or an engine that doesnt run at all?

Originally Posted by yorkie_chris

Well that does concern me, but whats worse? accelerated wear of cylinders and valves (if at all) or an engine that doesnt run at all?

Yeah fair point - thought the engine runs fine - definately runs on both.

Mind you...backfires on no throttle at about 3k when decellerating...nice little pops!!!

[yorkie_chris]

Yeah mine does that since I put the Fuel can on it ... lurvely

Edit: when you screw the plug in does it actually seat or no?

[dizzyblonde]

not as much as my two do!!!!!! usually a bit of a damp start makes em do that or crap in the petrol. mine needed fuel yesterday and did it until I had a fill up. Having a couple of erhem..noisy exhausts never harmed anyone!!

Originally Posted by yorkie_chris

Yeah mine does that since I put the Fuel can on it ... lurvely

Edit: when you screw the plug in does it actually seat or no?

Am pretty sure it doesnt - it goes in finger tight for maybe...4 turns or so, then need to use the ratched - but still really loose, then starts to tighten, but not like the rear which nipped up - and you can hear the grit in the threads grinding - thats where I stopped! I have a torque wrench, and although I cant fit it on the plug, I have a feel for the correct torque setting, and I dont think that the plug is quite there, just a bit looser - but obviously dont want to keep tightening and do some damage to the threads.

Just as a matter of interest, how far in does the plug have to be to ignite the fuel efficiently? - The bike runs fine - well, prob better that before I replaced the plugs - still some snatchiness at low revs, and a bit of a surge when I open the throttle but am putting that down to; TPS mod req'd, throddle boddies requiring sync etc.

Dont think this is related to the plugs? do you?

Originally Posted by dizzyblonde

not as much as my two do!!!!!! usually a bit of a damp start makes em do that or crap in the petrol. mine needed fuel yesterday and did it until I had a fill up. Having a couple of erhem..noisy exhausts never harmed anyone!!

lol no - example of a discussion the other day with my girlfriend:

me: I wanna get a new exhaust
her: Why? whats wrong with the one on it?
me: I want to hear the rumble of the v twin engine - and it'll look better...
her: oh...think its a waste of money
me: and its safer too - cos motorists can hear you, if they might not have seen you...
her...hmmm...whats the loudest one you can get? is the fuel loud enough? I think you should go louder...if it means you are safer

Gotta love her!