Quote:
Originally Posted by polex
I removed the carburetors for the second time and I measured the compression:
Cylinder 1: 11.8 KPa
Cylinder 2: 11.5 KPa
Cylinder 3: 12.0 KPa
The value was high but the measure was made without the carburetors.
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That must be KPa x 100 so 12KPa x 100 x .145 = 174 psi.
Looks pretty good -- within 5%
Quote:
I exchanged the following parts between carburetor 1 and 3:
1) main jet and holder
2) pilot jet
3) pilot screw and spring
4) float
5) float valve
6) choke valve
Now the problem is moved to cylinder 1.
If I remove the spark plug cable from cylinder 1 the engine runs like the cable is inserted (only at the idle).
This happened to cylinder 3 before exchanging the parts.
I restricted the problem to some parts of the carburetor.
Mainly the parts that I exchanged are not damaged and they are pretty clean. Then I don't understand why those parts cause a problem.
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Look at the pilot jet bore with a strong light and strong magnifier.
I had a similar problem one time. When I held the pilot jet up to the light I could see light through the bore and thought it was OK. When I looked with the magnifier I could see a film of varnish covering the bore! It passed light but was like a layer of clear plastic blocking fuel flow.
If you are looking at item '8' that's the needle jet and it usually stays in the carburetor body when you remove the main jet and holder/emulsion tube.
You should be able to see it inside the carburetor bore sticking up about 1mm or so.
If missing you'll have VERY rich operation!
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Does the bikebandit reflect the correct carburetor parts for Legend TT ?
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It seems to be OK.
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Why is it missed the pilot jet ?
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The BikeBandit parts pictures are from the Triumph microfiche and apparently Triumph doesn't offer different pilot jets.
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I would like to use "colortune", it is a transparent spark plug used to tune the pilot screw. Have you ever used this tool ?
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Sorry, never tried Colortune.
Check that pilot jet!
Jim
