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Broken cylinder head temperature sensor

K

krglorioso

Tuned and Synch'ed
Joined
Aug 14, 2009
Messages
28
In the process of fitting my two Stones with the all brass bases for the EFI Guzzi's cylinder head temperature sensor, the job on my 2003 went easily. My confidence grew exponentially. I believed, momentarily, that I was mechanically a peer of Patrick Hayes or Wayne Orwig, or many others who contribute to this board. I was misled by my intial success.

The same "simple" procedure on the 2004 was met with a bit of disaster as the plastic "upper" broke as I attempted to turn it and fell away, leaving the rather inaccessible brass base snugly in the head. I tried Search on this board and WGC board with no answers found re how to get it out. Somewhere in the last few years I did see a reference to what to do on one forum, but as for now I am in the dark.

14mm and 15mm sockets appeared close to fitting the hex on the base but no cigar. I did grind down the sides of a (cheap) 15mm socket for added clearance, but no go either.

Failing definitive advice, I will try soaking the base in 50/50 acetone and ATF and then use a suitable Easy-Out (oh, would that it were) in the vertical hole in the brass base.

For now, in belated recognition of my clear and present limitations, I'm waiting for advice.

Suggestions, please.

Thank you

Ralph
 
Patrick Hayes responded via a p.m. to my inquiry and I will relay his advice (which worked!)

Patrick found a link on the Wildgoose Chase board that suggested a 16mm socket ground down to remove the "ramps" at the opening of the socket. The 16mm base which holds the sensor has a very shallow hex and unless the socket is ground down the ramps will not allow engabement of the socket on the base. It also was necessary to grind the outside of the socket to about half its original thickness for about 1/4" from the socket's opening. This to clear the narrow recess in which the sensor's base exists. This worked fine, right off.

Ralph
 
Ralph It is soooo good when a disaster :oops: turns into a really good lesson (which others can also draw from) that has the warm after glow of a job well done. :cheer:
I'll remember this not so much for the particular part but as a reminder that tricky components and situations mostly can be solved by looking closely at the constituent parts and dealing with them one by one. Reductionist approach I think :geek:
 
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