Question about 2000 Yamaha YZF Thunder ace 1000 R

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Noisy engine slapping / knocking sound coming from alternator / starter chain.

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Hey m8y,, have u had the carbs balanced m8,, as she been serviced,, try the carb balance b4 any thing dude,, if the carbs dont open at the same time, or a ikl bit out of sync,, that will give a engine slappy knockin noise,,

Posted on Jan 01, 2009

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A very bad sound coming from my pulsar 150cc bike's engine like speedboat or old scooters


Hi, Rahul 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. Shifting Trans---CLUNK
7. Front Forks---PLUNK
8. Rear Shocks---SQUEAK
9. Starters---CLICK
10. Solid Lifters---TICK
11. Hydraulic Lifters---TAP
12. Pistons---SLAP
13. Connecting Rods Go---KNOCK-KNOCK---who's there, it's me "*****"
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.
Bajaj Pulsar 150 cc Engine Noise Review 305958 Complaints Board
What the reason that old gen pulsars especially p150 sounds weird and why...
Tips Tricks

Sep 09, 2016 | Bajaj Pulsar 150 Motorcycles

2 Answers

Engine starts and idles but has a loud slapping noise.No smoking from exhaust has good oil pressure any help or suggestions what it might be and approximate cost of repair.Thanks


Hi Mike:
What kind of bike and how old? Vintage Harleys sound like that most of the time. Just kidding all you Harley guys & gals!
Mike, can you tell where the sound is coming from, and most important, what happened immediately before this noise started?
If it was from the engine, I would not run it until I had it figured out.

Mar 20, 2015 | Motorcycles

1 Answer

I have a 07 yamaha road star 1700 that has a slapping noise coming from engine when at steady rpms when letting off or accelarating it goes away


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---HUM
3. Brake Rotors---BUZZ
4. Chains---RATTLE
5. Clutches---CHATTER
6. Shifting Trans---CLUNK
7. Front Forks---PLUNK
8. Rear Shocks---SQUEAK
9. Starters---CLICK
10. Solid Lifters---TICK
11. Hydraulic Lifters---TAP
12. Pistons---SLAP
13. 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.
Re Roadstar Engine Knock Road Star Forum Yamaha Road Star
Motorcycle Message Board Motorcycle USA
http://www.rswarriordocs.com/manuals/WarriorServiceManual-WO3646.pdf
OEM parts for Yamaha
http://www.starmotorcycles.com/assets/service/manuals/2006/LIT-11626-19-45_Road_Star_1266.pdf

Aug 17, 2014 | Yamaha Motorcycles

2 Answers

2009 superglide starter maybe?


whats your oil pressure at when warm ???

May 26, 2013 | Motorcycles

1 Answer

My 99 yamaha yzf r1 was making i knockin noise in the upper part of the engine i need to know how to trouble shoot it or the manual on the bike


Hi, Tom 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. Shifting Trans---CLUNK
7. Front Forks---PLUNK
8. Rear Shocks---SQUEAK
9. Starters---CLICK
10. Solid Lifters---TICK
11. Hydraulic Lifters---TAP
12. Pistons---SLAP
13. Connecting Rods Go---KNOCK-KNOCK---who's there, it's me "*****"
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.
98 R1 knocking sound engine
98 Yamaha R1 knocking sound UPDATE cam chain tensioner replaced and rattle...
1998 1999 Yamaha YZF R1 Service Manual R1 Moto Data Project
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals

Aug 12, 2011 | 1999 Yamaha YZF-R1

1 Answer

Always makes knocking noise like piston slap dont affect performance low mpg


hi, it may be timming chain, or gudion bearings, things sound louder in engines. (is your drive chain slack as this is easy to ajust)

Sep 07, 2010 | 2005 Honda CBR 1000 RR Fireblade

1 Answer

I have a 2001 model honda 100cc motorcycle. My problem is that the engine is somehow noisy maybe because of 8~9 years running. What do I need to do to solve it, do I need engine overhauling?


The bad thing about the internet is that I can't actually hear the noise to identify what it may be. Is it gearbox noise or top end noise? If it is top end, a knocking noise would probably be piston slap. Valves needing adjusting can be noisy also. A worn cam chain can be noisy. It would be a good thing to just ride over to a dealer and let them listen to it in an effort to identify what service may be needed.. No cost in doing that. In all likelihood, the valves should be re-seated and a new set of piston rings installed along with running a hone through the cylinder. This means removing the cylinder head and cylinder.

Dec 28, 2009 | 2004 Honda CRF 100 F

1 Answer

Have a 2008 kawasaki 1500 with excessive noises from rear lifters, also noises cam chain slap, my mechanic keeps telling its normal. thanks


YOUR MECHANIC IS SOMEWHAT RIGHT TO AN EXTENT. KAWA 1500'S ARE CHARACTERISTICALLY NOISY IN THE VALVETRAIN! BEEN AROUND THEM SINCE THEY WERE BORN. NOW IF YOURS IS PARTICULARLY NOISY, HAVE THE MECHANIC CHECK THE VALVETRAIN AND CAM CHAIN TENSIONERS FOR PROPER ADJUSTMENTS. THIS IS CRITICAL FOR THE LIFE OF THE ENGINE!

Oct 21, 2009 | 2004 kawasaki VN 1500 Vulcan Classic

1 Answer

Timing chain songs like if it is touching the guides


No. It goes around your crankshaft. It's a major teardown. I redid a Honda Hurricane not to long a go and it has three chains in it. A timing chain, an oil pump chain, and one that runs off of the starter. All three were replaced, as the starter one was really loose. The engine has to come completely apart.

Jul 07, 2009 | 1985 Suzuki GSX 750 EF

1 Answer

Internal engine noise


timing chain loose?  Piston slap?  Rod knock?  Loose clutch spring?

Mar 22, 2009 | 2006 Honda VTX 1300 S

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