Any carb guys out there? Carb sound question

General Boats and Motors
1

any carb guys out there.
1997 Yamaha 4 stroke 50hp high thrust - all 4 carbs rebuilt. They were very dirty.Lots of orange gunk. All that’s done and reassembled successfully but I’m still getting the sound.

From the air box you can hear the carb almost backfiring, soft push of air. I can send a short text video if you text me at 843 two two 4 4 seven 6 eight. it’s very distinct.

Maybe the fuel pump, diaphragms ??

Thanks for any help.
BKW

BKW

2

ITS CALLED “LEAN SNEEZE”
CARB IS STILL DIRTY AND OR NOT PROPERLY SYNCHRONIZED.
NO WAY TO GET THAT MOTOR TO RUN PROPERLY WITHOUT A 4 GAUGE VACUUM ADJUSTMENT SET.

www.teamcharlestonmarine.com
www.bombislandboats.com
IF I RESPOND IN ALL CAPS, ITS NOT ON PURPOSE, AND I AM NOT YELLING

3
quote:
Originally posted by chris V

ITS CALLED “LEAN SNEEZE”
CARB IS STILL DIRTY AND OR NOT PROPERLY SYNCHRONIZED.
NO WAY TO GET THAT MOTOR TO RUN PROPERLY WITHOUT A 4 GAUGE VACUUM ADJUSTMENT SET.

www.teamcharlestonmarine.com
www.bombislandboats.com
IF I RESPOND IN ALL CAPS, ITS NOT ON PURPOSE, AND I AM NOT YELLING

THIS^^

Tuning those things is a nightmare…unless you have the right tools!

Wadmalaw native
16’ Bentz-Craft Flats Boat

4
quote:
Originally posted by leadenwahboy
quote:
Originally posted by chris V

ITS CALLED “LEAN SNEEZE”
CARB IS STILL DIRTY AND OR NOT PROPERLY SYNCHRONIZED.
NO WAY TO GET THAT MOTOR TO RUN PROPERLY WITHOUT A 4 GAUGE VACUUM ADJUSTMENT SET.

www.teamcharlestonmarine.com
www.bombislandboats.com
IF I RESPOND IN ALL CAPS, ITS NOT ON PURPOSE, AND I AM NOT YELLING

THIS^^

Tuning those things is a nightmare…unless you have the right tools!

Wadmalaw native
16’ Bentz-Craft Flats Boat

and even with the proper tools they can still be VERY difficult

www.teamcharlestonmarine.com
www.bombislandboats.com
IF I RESPOND IN ALL CAPS, ITS NOT ON PURPOSE, AND I AM NOT YELLING