1994 suzuki dt115 Sneezes

[josh5058]

My 1994 dt115 makes a sneezing sound at idle up to around 2000-2500 rpm.
Could anyone give me and idea of what this could be? When I bought the motor there was some idling problems, so I replaced the throttle sensor and adjusted the flywheel position sensor. I did trouble shoot the whole motor looking for other potential problems, but everything looked within specs. Any help on this Sneezing would be appreciated.

Thanks ,
Josh

 

[cousinabe]

Re: 1994 suzuki dt115 Sneezes

Could be trash in the carbs, bad fuel pump diaphragm or needs a link and synch.
Have you checked your low pressure fuel pump is in spec? Does pumping the primer ball affect the problem?

Was it ever running right?

 

[special_kaye]

Re: 1994 suzuki dt115 Sneezes

My 1994 dt115 makes a sneezing sound at idle up to around 2000-2500 rpm.
Could anyone give me and idea of what this could be? When I bought the motor there was some idling problems, so I replaced the throttle sensor and adjusted the flywheel position sensor. I did trouble shoot the whole motor looking for other potential problems, but everything looked within specs. Any help on this Sneezing would be appreciated.

Thanks ,
Josh

Okay, I'm hooked and dying to see an answer for this one. I just had my second Susy-Q delivered and can't wait to get it installed.

 

[elcamino12sec]

Re: 1994 suzuki dt115 Sneezes

Sneeze = a lean condition, not getting enough fuel. Find out what cylinder it is and adjust the carb accordingly.

 

[josh5058]

Re: 1994 suzuki dt115 Sneezes

Thanks for the reply's. Its not trash in the carbs, I cleaned them about a month ago when I bought the motor. How do I know if one cylinder is running lean? Compared to the other cylinders?

 

[James R]

Re: 1994 suzuki dt115 Sneezes

Manual calls for Idle jet screws to to be 0.625-1.125 turns out from lightly seated. Each screw will need careful and slow adjustment to get the optimum from each cylinder at idle. A sneeze is usually indicative of lean setting. Adjust the screws out to richen the mixture.

 

[josh5058]

Re: 1994 suzuki dt115 Sneezes

O.K. will try to adjust carbs.