Pinging

[Redbmwman]

Need help I have a 2002 r1150r with 24,000 miles on it I found when it gets hot 90 to 100 the engine pings a little when in 3rd on up when accelerating hard but then comes out of it .I had it to the dealer they installed a new time chain tensioner did the valves and sync the throttle bodies.It seems a lot better when the temp is down in the 80s but can't seem to isolate the problem.Could it be the plugs I put in some sea foam in the tank but didn't seem to help much....what do you guys think?....thanks or any info.

[gregor]

Try higher octane fuel and see if that removes the pre-ignition?
Mind you if it was that simple why fiddle with the timing chain tensioner etc.

[Soliton]

I had a problem with mild pre-ignition and after a good tune it continued. I use 95 octane fuel.

I water tortured my engine and it fixed it.

How?

Get:

• A helper.
  A big heat proof jug.
  A small heat proof container like a mug or similar.
  A meter of clear plastic tubing that fits tyne vacuum nipple on the throttle body.

How to:

• Attach a 80cm of clear plastic tubing to the vacuum nipple of one of the throttle bode (underneath with a black plastic cover)
  Boil a couple of litres of distilled or de-ionised water. You can use clean tap water.
  Start the bike and let it warm up. Your Helper should now control the throttle.
  Pour a small amount of the hot water from the large container into the small one (perhaps 10-20mm in the bottom of the mug)
  Move the tube that you connected to the vacuum nipple near to the water and allow it to enter the throttle body. Control the flow by moving the tube. Your helpers job is to keep the revs at a sufficient level to prevent the engine from bogging down. Your job is to back off the water if the revs drop too much.
  Keep adding water to the cup until you have run 500+ml though one side.
  Repeat on the other side
  Change your oil and filter

Another solution that I have seen proffered is to manually de-carbonise the piston crowns, and valves. This is a big job but another member showed just how bad they can get and the results of doing it and his experience was that it was valuable if not time consuming.

Hope this helps.

Sol