|
|
|||||||
| Gas Yamaha Gas Yamaha Golf Cars; G1 through "The Drive" and U-Max Utility Vehicles |
  |
|
|
Thread Tools | Display Modes |
08-29-2022, 10:15 PM
|
#1 |
|
Not Yet Wild
Join Date: Apr 2020
Posts: 58
|
2011 Yamaha Engine Noise
I need some help determining what the source of the engine noise on this engine is. It sounds like a rattle or chatter. I have not been able to determine where the noise is coming from. See link below:
https://youtube.com/shorts/6GFfYcDS8Y8?feature=share |
|
|
 Today
|
|
Sponsored Links
__________________
This advertising will not be shown in this way to registered members. Register your free account today and become a member on Buggies Gone Wild Golf Cart Forum |
|
|
08-30-2022, 12:44 AM
|
#2 |
|
Sometime's............
 Join Date: Oct 2007
Location: Tacoma Washington
Posts: 11,875
|
Re: 2011 Yamaha Engine Noise
Try checking out the spot welds on the muffler heat sheild shroulding.
|
|
|
|
|
08-30-2022, 04:09 AM
|
#3 |
|
Not Yet Wild
Join Date: Apr 2020
Posts: 58
|
Re: 2011 Yamaha Engine Noise
Will do.
|
|
|
|
|
08-30-2022, 07:58 AM
|
#4 | |
|
Not Yet Wild
Join Date: Aug 2022
Posts: 9
|
Re: 2011 Yamaha Engine Noise
Quote:
|
|
|
|
|
|
08-30-2022, 10:06 AM
|
#5 |
|
Not Yet Wild
Join Date: Apr 2020
Posts: 58
|
Re: 2011 Yamaha Engine Noise
I have already replaced the cam but I did notice that the crankshaft journals showed some signs of excessive heat.
|
|
|
|
|
08-30-2022, 10:27 AM
|
#6 |
|
Gone Wild
Join Date: Nov 2013
Location: Western NY
Posts: 644
|
Re: 2011 Yamaha Engine Noise
Cell phone video tends to compress the audio making it difficult to diagnose the sound.
Muffler welds tend to be higher in frequency. Tinty like a cheap chime. Valves are a tick sound. The knock that is deeper in the engine will be the teeth on the crank, cam, and balancer shaft. You wont be able to see anything wrong with the teeth but they are worn. |
|
|
|
|
08-31-2022, 08:23 PM
|
#7 |
|
Not Yet Wild
Join Date: Apr 2020
Posts: 58
|
Re: 2011 Yamaha Engine Noise
I think that you are on to something. I am going to go ahead and replace the crankshaft and the balance shaft. I have already replaced the cam. Maybe that is the answer.
|
|
|
|
|
09-28-2022, 09:47 AM
|
#8 |
|
Not Yet Wild
Join Date: Apr 2020
Posts: 58
|
Re: 2011 Yamaha Engine Noise
PROBLEM SOLVED! Turns out it was excessive wear in the gears that drive the balance shaft and the camshaft. Had to replace the cam, crank, and balancer to fit it.
|
|
|
|
|
|
||||||
|
|
Similar Threads
|
||||
| Thread | Forum | |||
| Electric 2011 G29 Yamaha Rear grinding noise with Navitas | Electric Yamaha | |||
| 2011 rear end noise | Electric Yamaha | |||
| 2011 RXV clicking noise | Electric EZGO | |||
| 2011 YDR noise when braking | Gas Yamaha | |||
| Yamaha G14 Engine Noise | Gas Yamaha | |||
Linear Mode
