wacky cylinders

[Guest]

Okay I have a GS750 with pods and 17.5 pilot jets. Straight pipes(bike came without airbox or muffler)

all 4 carbs are tuned exactly the same.


Cylinder 1 - constantly backfiring/puttering, when i pull the spark plug out little black around thread and a little white at arc point.(only cylinder that backfires)

Cylinder 2 - when spark plug pulled it looks pretty normal.

cylinders 3/4 Very black, 4 slightly blacker





p.s. backfiring does not stop no matter how long the ride

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Thanks!

[Steve]

Just a hint: "all 4 carbs are tuned exactly the same" does not necessarily mean that ANY of them is set correctly.

And when they do finally get tuned (somewhat) perfectly, I will bet that they are not all set the same.

Since I am not there to twist some screwdrivers to check the settings, give me a clue what your "all the same" settings are.

.

[Nessism]

Don't even try to tune the bike until you get some mufflers and do some maintenance. Check the newbie mistakes thread linked in my signature.