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Old 05-12-2008   #42 (permalink)
polex
New Member
Grand Prix 125
 
polex's Avatar
 
Join Date: Apr 2008
Location: Huntsville (Alabama)
Posts: 21
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.

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.

Referring to this web site:
http://faq.ninja250.org/wiki/How_a_c...arbs_explained
I noticed a collar between main jet holder and the carburetor.

In the bikebandit.com:
http://www.bikebandit.com/houseofmot...m6894sch512877
I noticed a collar between the main jet and the holder.

Should I find the collar in my Keihin carbs ?
Does the bikebandit reflect the correct carburetor parts for Legend TT ?
Why is it missed the pilot jet ?

My VIN ends with 102063.

I would like to use "colortune", it is a transparent spark plug used to tune the pilot screw.

Have you ever used this tool ?

Thank You very much for your support.
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