I recently did the wire splice and HRC jet kit/card mod to my 1995 MC28sp and it seems to run really strong and smooth. However while riding today I had a chance to really open it up and found that in 5th and 6th gear wide open at about 10k rpm it started to cut out like a fuel starvation problem. Could this be a float level problem? Do you have to change the float level setting with the big jets? Any ideas why it seems to be running out of fuel with a full tank. It only happens in 5th or 6th gear when wide open and above 10k rpm. I also had the bike appear to run out of gas and have to switch to reserve only to discover the tank was still half full and then run again after switching back to ON. Could it be a venting problem? It's a brand new petcock. How can I check if the vent is clear?

Steve
1995 MC28sp
1995 TZ250
2001 R1

Sounds like a breather problem. You don't normally need to fiddle with the float levels much, which on the MC28 should be 13.7mm stock.

You need to remove the filler cap to get at the top of the vents...



and remove the tank to get to the other ends...


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Andy.
NSR-WORLD.COM

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Andy,

You are the man! Pictures and everything! Thanks when I get a chance to check the venting I'll let you know what I find. According to my watch and the time difference you must be a night owl or working the night shift.

Steve
1995 MC28sp
1995 TZ250
2001 R1

Insomniac!

This post yesterday beats today's by another 35 mins!
_________________
Andy.
NSR-WORLD.COM

Please keep all responses to Forum posts on the Forum so that others may benefit.

Please DO NOT PM me for technical advice. My time is precious, and you will probably receive a faster response on the Forum anyway.

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stlambrick wrote:Andy,

You are the man! Pictures and everything! Thanks when I get a chance to check the venting I'll let you know what I find. According to my watch and the time difference you must be a night owl or working the night shift.

Steve
1995 MC28sp
1995 TZ250
2001 R1

no, Andreas has no life
_________________
These aren't the droids you're looking for.

I checked the fuel tank venting and it is fine. Could the jetting be causing my problem? In the lower gears it will rev to the moon, it is only in the top two gears where it starts to cut out. What would it do if it was excessively rich or lean? Any ideas anybody.

Steve
1995 MC28sp
1995 TZ250
2001 R1

What jets are you running?

It sounds like it could be a touch on the lean side.

The MJ's are 175's, the SJ's are 42's, the PJ's are still working and I'm running the HRC "B" needles in the middle groove. Open airbox with hi-flow filter. HRC 010 card/splice. Jha pipes.

Steve
1995 MC28sp
1995 TZ250
2001 R1