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Short knocking noise when start up

Only for 1 or 2 seconds

Posted by Anonymous on

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  • Motorcycles Master
  • 2,963 Answers

Dry piston slap?

Posted on Apr 08, 2015

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6ya6ya
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Posted on Jan 02, 2017

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1 Answer

Knocking noise from the Primary casing on left hand side.


Both the short time before needing to readjust, and the fact that you're out of adjustment, indicates the chain is worn out.

Apr 30, 2014 | Harley Davidson FLSTN- FLSTNI Softail...

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Chain tensioner cam


Hi, Anonymous I would love to help you with your engine or chassis noise but I just loaned my brand new pair of listening ears to your local dealer's chief technician so he could take your bike for a test ride and give you his professional opinion and estimate about your noise and repair cost. If you are a little short on "DRACHMA" and a Dealership is not on your list of fun places to visit then perhaps the list below will help soothe your worried mind so you can make an informed decision.
1. Bearings---SCREECH
2. Belts---CHIRP
3. Brake Rotors---BUZZ
4. Chains---RATTLE
5. Clutches---CHATTER
6. Shifting Trans---CLUNK
7. Gears---WHINE
8. Front Forks---PLUNK
9. Rear Shocks---SQUEAK
10. Starters---CLICK
11. Solid Lifters---TICK
12. Hydraulic Lifters---TAP
13. Pistons---SLAP
14. Connecting Rods Go---KNOCK-KNOCK---who's there, it's me "*****"
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
Yamaha TDM900 Service Manual
OEM parts for Yamaha
YAMAHA TDM900 Owner Manual

Dec 19, 2013 | 2004 Yamaha TDM 900

1 Answer

R1 making a knocking noice on right side of motor


Hi, Richardne794 I would love to help you with your engine or chassis noise but I just loaned my brand new pair of listening ears to your local dealer's chief technician so he could take your bike for a test ride and give you his professional opinion and estimate about your noise and repair cost. If you are a little short on "DRACHMA" and a Dealership is not on your list of fun places to visit then perhaps the list below will help soothe your worried mind so you can make an informed decision.
1. Bearings---SCREECH
2. Belts---HUM
3. Brake Rotors---BUZZ
4. Chains---RATTLE
5. Clutches---CHATTER
6. Front Forks---CLUNK
7. Rear Shocks---SQUEAK
8. Solid Lifters---TICK
9. Hydraulic Lifters---TAP
10. Pistons---SLAP
11. Connecting Rods Go---KNOCK-KNOCK---when you open "*****" is at the door
For more information about your issue and valuable "FREE" downloads that you need please click on the links below. Good luck and have nice a day.
http://www.r1-forum.com/forums/4-mechanical-help/87352-knocking-noise.html
Yamaha R1 98 weird knocking sound 2 without clutch
https://r1videos.files.wordpress.com/2011/04/2002-2003-yamaha-r1-service-manual.pdf
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals

Jun 10, 2012 | Yamaha YZF-R1 Motorcycles

2 Answers

P0325 what does it mean


P0325: Knock Sensor 1 Circuit Malfunction Bank 1 or 1 Sensor

- Knock sensor circuit short to ground
- Knock sensor circuit short to power
- Knock sensor circuit open
- Faulty knock sensor
- Faulty Engine Control Module (ECM)

Replacing the knock sensor usually takes care of the problem.

The knock sensor is attached to the cylinder block. It senses engine knocking using a piezoelectric element. A knocking vibration from the cylinder block is sensed as vibrational pressure. This pressure is converted into a voltage signal and sent to the Engine Control Module (ECM).

Feb 07, 2012 | 2005 Kia Rio

1 Answer

Service engine light on. Problem identified as P0332 Knock Sensor 2 Circut Low Input Bank 2


P0332 GM

Knock sensor circuit low voltage bank 2
- The ECM detects a KS signal voltage that is less than typical engine noise level for at least 4 seconds

Probable Cause[s]

  1. Open or short circuit condition
  2. Poor electrical connection
  3. Knock sensor
  4. ECM fault

Mar 13, 2011 | 2003 Chevrolet TrailBlazer

1 Answer

When the dryer starts it makes a quick grinding noise like it is having trouble starting. After only 1 second that noise goes away and the dryer appears to be working fine. It will stay running anywhere...


Hi,


Here is a tip that I wrote about dryers and noises...

It will help you determine what is happening there...

Dryer Repair Squeaks, Grinding, Clicking and Knocking Noise


heatman101

Asker

Mar 09, 2011 | Whirlpool LER4634J Electric Dryer

1 Answer

Obnoxious screeching sound when the drum turns. Short consistent screech on revolution, which turns into one long non-stop screech. Stops after 45 seconds or so, then starts all over again with longer...


Normal 0 MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman";} Hi,
Here is a tip that I wrote about dryers and noises...

It will help you determine what is happening there...

Dryer Repair Squeaks, Grinding, Clicking and Knocking Noise


heatman101

Asker's Testimonial "That answer was very informative - thank you for taking the time to educate me. " - teresa241964

Sep 05, 2010 | Fisher and Paykel DEGX1 Electric Dryer

1 Answer

My engine makes a knocking noise


Could be a loose bearing on the crank shaft, it could also be valve lifter chatter. without knowing a little more info it is hard to diagnose

Mar 17, 2009 | 1987 Chevrolet S-10 Pickup

1 Answer

Refrigerator knocking noise


the motor could be on the way out. Put your hand (carefully) on the motor (back of the refridgerator), if it is too hot to touch then the motor is burning out and will need to be replaced.

Nov 15, 2008 | Kenmore 64254 / 64252 / 64259 Top Freezer...

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