Carb problems

[JosephC]

I have a problem n i cant figure if it's just one or two problems working together I have a 95 gsx600f and when I try to start it it sounds like it back fires thru the carbs cuz I hear a hissing sound from the carbs and it sounds like a shotgun going off when it back fires and I'm not sure what the problem is can someone plz help me with this problem

[92xjunker]

Valve lash needs service..

[JosephC]

I might sound stupid asking this question but what is a valve lash

[92xjunker]

You need a valve adjustment.

[zuma]

he's right...and there's this dude called Arsenic...

[Kreylyn]

First, lets clarify...

Backfire means the boom/flames is coming out the carbs themselves.

Afterfire means the boom/flames is coming out the exhaust.

It's important to know the difference, cause you have different issues to consider.

Backfire can really only happen on a Kat if the firing order is wrong. That really only happens when someone plugs the coils up incorrectly, or has the plug wires in the wrong order. Check those are correct if backfire is the real issue your having.

Afterfire happens anytime fuel vapor builds up in the exhaust. That could be a few different reasons, but the most common is carbs need clean/adjusted. If those are in order, then check your getting good spark on all 4 plugs, with proper voltage to the coils.

Krey