GS500 Rejet Issues

[beanb142002]

After replacing the factory jets on my 2008 GS500F (17.5,60,130) I upped the sizes to (20,62.5,142.5).  I then adjusted the mixture screw about 2.75 turns out.

With choke on, it held revs between 3 and 3.5k for a good while but had tremendous exhaust smoke so I assumed a too rich mixture.  If you applied throttle it would rev up but the engine sounded terrible.  I have went back and forth with the mixture screw to no avail, including stock setting (2 turns out).

I then shimmed the needles with two washers each.  Nothing at first but it did hold about 3k revs for several seconds before idling down and going dead.

I am at a loss.  I have drained the battery trying to get this thing to work.

What else can I do?


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[Suzuki Stevo]

If your bike is stock??
A 132.5 main is all the bigger you need and no washers

[beanb142002]

If your bike is stock??
A 132.5 main is all the bigger you need and no washers

The bike is stock except for a K&N air filter.  I am running the engine with out the airbox on so it is easier to adjust the carbs until I get them right.

Mine is setup the same as another user on the forum except I have no success.


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[Suzuki Stevo]

Not having an airbox changes the mixture, is your K&N a drop in? If so with or without the restrictor ring? Guess it doesn't matter cause it's not on the bike right now if I understand you correctly?

"I am running the engine with out the airbox on so it is easier to adjust the carbs until I get them right."   Without an airbox and the filter you plan on using you will never get the mixture right 

[beanb142002]

Not having an airbox changes the mixture, is your K&N a drop in? If so with or without the restrictor ring? Guess it doesn't matter cause it's not on the bike right now if I understand you correctly?

"I am running the engine with out the airbox on so it is easier to adjust the carbs until I get them right."   Without an airbox and the filter you plan on using you will never get the mixture right 

So you are saying that because I do not have the airbox on I am getting too much air and thus the engine won't stay cranked for long?


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[Suzuki Stevo]

It makes it lean, not from the airbox not being there but from the air filter not being there, nothing to do with staying cranked

[beanb142002]

Thanks

[twocool]

And...another rejet messed up bike....

(I'm only on page 2 of the posts)


Cookie

After replacing the factory jets on my 2008 GS500F (17.5,60,130) I upped the sizes to (20,62.5,142.5).  I then adjusted the mixture screw about 2.75 turns out.

With choke on, it held revs between 3 and 3.5k for a good while but had tremendous exhaust smoke so I assumed a too rich mixture.  If you applied throttle it would rev up but the engine sounded terrible.  I have went back and forth with the mixture screw to no avail, including stock setting (2 turns out).

I then shimmed the needles with two washers each.  Nothing at first but it did hold about 3k revs for several seconds before idling down and going dead.

I am at a loss.  I have drained the battery trying to get this thing to work.

What else can I do?


Sent from my iPad using Tapatalk