Engine ting

drglinski · #1 07-03-2015, 06:06 PM

...for lack of a better word, I suppose..I noticed my engine on my 147 (14 HP) was tinging at a certain low idle speed, and I'm not sure what it is.

https://www.youtube.com/watch?v=kYjl...ature=youtu.be

I thought it might be the link connecting the carb to the governor since it flops like crazy when the engine is running, but I'm not sure. I also don't hear anything out of the norm when it's running on high idle. (using it while mowing today).

I've got the springs on my mech. PTO installed too.

Thanks

J-Mech · #2 07-04-2015, 03:39 PM

I think I hear what you are talking about.... but not sure.

A few things that I can think of:
The muffler looks new. Some of the cheaper mufflers have a more "tinny" sound.
Could be a leaking exhaust valve.
Could be the rotary screen broken loose from the flywheel. (I had one do that and I like to have never figured out where that noise was coming from.)
I know you just rebuilt the driveline, but is the pin tight on the coupler on the back on the motor.
Could be something hitting the flywheel. Perhaps you changed out a bolt on the flywheel tins and used one that's a little too long?

What are the last 5 or so things you did to it, and when did this noise start? All at once, or you noticed it after a repair?
It's not the governor linkage.

Justin Witt · #3 07-04-2015, 10:24 PM

Sounds like its just too low an idle. Give the idle screw a couple turns and see if it stops making noise. I know a lot of engines will make weird noise if they are run to slow. But it might be something hitting the flywheel or the drive pin to sloppy or maybe the muffler like Jon said. Hope this might help!

drglinski · #4 07-04-2015, 10:38 PM

I replaced the drive shaft pin when I worked on it this spring, and I noticed the coupler was worn in the usual places. The muffler was new last year. I'm not thinking it's any flywheel issue since I haven't done any wrenching on it there, plus the flywheel screen is tight.

Thanks guys.

bocephus1991 · #5 07-04-2015, 11:00 PM

I'd check that coupler and around in that area. I watched the vid too. Don't know without looking it over in person and trying to diagnose it. Always try simple first.

J-Mech · #6 07-04-2015, 11:23 PM

If you bring the rpm's up a little does it quit?

J-Mech · #7 07-04-2015, 11:28 PM

[QUOTE=Justin Witt;335967]Sounds like its just too low an idle.[QUOTE]

Idle speed sounds fine to me. I'd say its between 900 and 1000 rpm.

Justin Witt · #8 07-05-2015, 12:00 AM

Can't hurt to turn it up some. A little higher idle is better than lower with these splash lubed engines.

But from what I'm getting at, it seems it only ticks or whatever the noise is at low idle...

cubby102 · #9 07-05-2015, 05:30 AM

My 127 did this also... I found that one of my engine shrouds (the head cover/muffler support was just ever so slightly loose and my oil dipstick "cap" i guess you could say was broken from the dipstick and rattling around ...may not be your issue but from the video it sounds the same to me I fixed both at the same time and no more weird ting sound

ol'George · #10 07-05-2015, 07:37 AM

I think I hear the higher pitched "ting" you describe, almost sounds like a internal muffler baffle. try a stethoscope or screwdriver on it and put it to your ear,
use a long one Ha,LOL! or a piece of wooden dowel
It does sound external.
Also on the mule drive, check the belt adjustment/wear indicator on the right idler pulley, they give that sort of rattle if loose.