Engine Issues

Machine Repairs
1

Hey all,

I’m having a little issue with an older machine I have. I tried uploading a video but it wouldn’t let me. The machine surges and the bypass line and pressure line do as well; is that air getting in there or the unloader not set right?

Also you can hear “pops” like the machine is backfiring. Not sure what that is about. All fuel lines under the hood are secure and the filter stays full of fuel. One thing I did notice was that there were a lot of bubbles coming into the fuel filter from the line to the tank. Could it be the belts slipping? Or dirty carb? Or air leaking in the fuel line?

No issues when the trigger is pulled. Good flow and pressure; only happens when it is idling and bypassing.

Dave - Hook N Ladder PW

2

I would check unloader operation first, sounds like the culprit

3

How long has it been since you last used the machine?

If it’s the first time using it this year, and you haven’t changed anything else with your set up, I would guess it’s a dirty carb.

If you have been using it for the last couple weeks with no issue until now, then I agree with @CHogue and your unloader may be going bad/clogged or need adjustment.

4

Ill be checking both things this week. I appreciate you both responding. The machine sat for a while and has been actin this way every time we’ve tried to run it recently. Ill pull the carbs first and see if that’s the issue.

Thanks!