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Hi Gents, Just wanted to steal some advice on the condition of the plugs I just pulled out of my 2010 FLHRC, They have probably been in the bike for about 3000kms. Right is the front and left the Rear cylinders.
Could be a small intake leak, and you have/had a valve stem seal or ring issue. If the engine passes compression & leak down tests, replace the intake seals and plugs, and put a few hundred miles on it and look again.
Could be a small intake leak, and you have/had a valve stem seal or ring issue. If the engine passes compression & leak down tests, replace the intake seals and plugs, and put a few hundred miles on it and look again.
Originally Posted by scott_0
definitely oil on the one plug, does the bike burn oil?
Originally Posted by V-Twins & Bowties
Rear= good. Front= not so good. Looks like front cylinder has oil getting in.
Thanks for the reply gents,
Funny, the plug (darkened on) didn't appear to be wet, although as you can see it has a hard deposit on the strap.
In regards to the intake seals, how would that translate to oil on the sparkplug? Completely Honest question by the way.
The bike hasn't appeared to be burning oil in the past but on the most recent check, it is rather low add to that on my last ride I had some intermittent heat issues in stop-start traffic where even with the EITMS enabled I had to shut off the engine (At a set of traffic lights) because I was spooked about the heat coming off of the motor. When I did try to restart On the green light I got nothing at first almost like a dead battery and then had the security system acted like it did not recognise the fob I had on me. I then had to turn everything off completely and start up from scratch to get it running. It hot stalled through a roundabout at the next intersection which I managed to get it started on the fly and managed to ride the 30kms back home with no issues. I checked for codes when I got home and had a CO562.
I should have prefaced with the bike has 36000 km (22k miles) on the odometer, With SE.211 cams, Vance and Hines Big duel shots, SE super tuner pro and dynoed to suit all modifications.
Pull the air cleaner off, look in the throttle body for signs of crap getting in there from a bad intake valve or seal.
If you see crap , pull the throttle body and see if the front pipe is full of crap.
If so then you might want to go as far as pulling the intake completely and looking at the valve area in the head and seeing if it id gunked up.
Are you burning oil?
The front jug on my 12K mile bike with SE heads was sucking a quart of oil every 500 miles thru a bad valve seal and making a real mess of the intake and front plug.
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