Head Gasket gone on my 1150 Adv?

Foto John

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Yesterday I came back home from a short but fast ride, I never take her anywhere near the red-line, but something strange happened. I switched off the ignition and parked the bike outside the garage whilst opening it, once opened I fired her back up again to ride her in over the curb and into the garage, but as soon as she fired up a load explosion and a puff of smoke came from the left hand cylinder head.
On closer inspection it looks like something has leaked out between where the cylinder head and the engine block is. There's some sort of burnt debris on top of the fins on the cylinder head, forgive me my ignorance but could it possibly be the head gasket?
 
apart from the debris does the engine still run? did you attempt a second start? what happened next?
 
mpriestley said:
apart from the debris does the engine still run? did you attempt a second start? what happened next?

Shut engine off and started it back up again, no oil peeing out or load bangs again, so I don't know. Incidently the oil remained the same, up to the dot in the centre of the glass.
 
Matchheads maybe. We used to do that. Put several between the fins of someones bike and wait for the bang. A better bang came from Hilti catridges. Just a thought John.
 
Another thing John. After studying the pic, the burnt bit is not on the cylinder/ head joint. Its on the fin next door to it.
 
Den said:
Matchheads maybe. We used to do that. Put several between the fins of someones bike and wait for the bang. A better bang came from Hilti catridges. Just a thought John.

Something I thought about, but both myself and Inge were with the bike when opening the garage. Also seems strange that it made the explosion on starting the engine.
 
Den said:
Another thing John. After studying the pic, the burnt bit is not on the cylinder/ head joint. Its on the fin next door to it.

Yes, you're correct on that Den, but if you look closely you can spot debris on the joint too! Though admittedly not as much as on the fin next to it, maybe that's where it landed???
 
Mine used to pop when I started it (only when hot though) but it came from where the exhaust goes into the engine. The clamp bolt had come slightly loose, I just tweaked it up and it hasn’t done it since.

Might be worth checking.

:beerjug:
 
John,

why not try to replicate the event with a couple of matches and see if its the same thing - just a tought that might stop you worrying!
 


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