backfiring

[weldit]

I have a 95 xlt special and this year she started backfiring on the bottom end. carbs are in sinq, and clean , thinking its a spark problem. need help.

 

[switchbackfst]

I have a 95 xlt special and this year she started backfiring on the bottom end. carbs are in sinq, and clean , thinking its a spark problem. need help.

A buddy of mine had an xlt couple years ago. Not sure on the year though. His issue was 2 bad coils.

 

[note]

its prety warm out and your sled is not EFI. id say its too lean. my 98 rmk does that too somtimes.