Questions tagged [motorcycle]

A self propelled two wheeled motor vehicle with an engine larger than 50cc's.

181 questions with no upvoted or accepted answers
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6
votes
0answers
205 views

What causes an engine idle to increase briefly?

I have an 82 Honda 450 Nighthawk motorcycle that I'm rebuilding and I need to tune/balance the carbs. I have them bench-balanced and reset the idle screw on both. Now it runs a lot better, but every ...
5
votes
1answer
1k views

Honda Shadow Phantom VT750 2016 trouble starting

Having a little trouble here. My current Phantom is my 4th bike, and I drove it off the lot at 0 miles just a few months ago. The other morning (It was a cold morning relative to the surrounding days, ...
5
votes
0answers
416 views

How do you compare two ECU maps

I want to update my ECU mapping on my motorcycle to the latest one supplied by the manufacturer, but I'd also like to see what changed before doing so. I downloaded what was on the bike ECU and also ...
4
votes
0answers
112 views

Honda XL250R-C Carb ISSUES

I have a UK Honda XL250R-C 1982 pro link just purchased, I was told it had the wrong carb fitted which was a (PD70A) which is why it was running so bad, I was also given at the time of purchase a carb ...
3
votes
0answers
157 views

honda cg125 why won't any of my lights work when the pilot light is connected

i'm stumped and hope that one of you guru types can help. my boy smashed the headlight on his cg125 in a low speed spill. i've fitted a complete headlight unit but gremlins have attacked. every light, ...
3
votes
0answers
231 views

2004 suzuki sv650s fuel pump does not prime or start

I've just purchased this bike as a non runner due to the alarm ( datatool system 3) I bypassed the alarm and it run like a dream. I then proceeded to remove the ararm by following all the wires and ...
3
votes
1answer
443 views

BS4 Royal Enfield Classic 350 stops all of a sudden as not enough fuel is coming out in On position. Even changed the petcock and cleaned the tank

Bike stops suddenly when in ON position. Removed the fuel line from petcock to carburetor and saw that not enough fuel is coming in ON position. Changed the petcock, cleaned the tank from inside, but ...
3
votes
0answers
977 views

Grinding sound comming from gear Box

I own a TVS Apache RTR. Recently I have started to hear grinding sounds from the gear box. When I showed it to a authorised service centre, says that it's due to the sprocket being damaged. But the ...
3
votes
0answers
3k views

Is my bike running rich or lean - I have both symptoms

Symptoms of Lean or Rich carb settings on a motorcycle I have a '71 Honda CB350 that is new to me. I recently rebuilt the carbs and replaced the petcock and had it running pretty good for awhile. I ...
2
votes
0answers
45 views

750 will not idle or run without choke fully on

1977 Honda 750 will only run with choke fully on, it will only idle at 3000rpm, idle setting does nothing. Carbs are clean and rebuilt. It will rev up but appears to be burning quite lean.
2
votes
2answers
165 views

'94 Kawasaki ZZR600: Electrical issues

first post here, be gentle :) I have an (presumeably) electrical issues with my '94 Kawasaki ZZR600 (ZX6). Two weeks ago, I was ready to go to work when suddenly the bike died on me, all electrical ...
2
votes
1answer
49 views

Charging problem

Ducati 450 scrambler 1975 converted to 12v with Luas Rita AB11 electronic ignition it is so easy to start with this modification I put a new original alternator 3 face that gives up to 55v at 5000rpm ...
2
votes
1answer
46 views

Yamaha 600TT stopped, and won't restart

As I was driving home from work yesterday at around 80 km/h, my Yamaha 600TT lost electrical power all of a sudden (all dashboard lights out). At the same time, I also lost engine power, and the ...
2
votes
0answers
52 views

Motorcycle won't start

My bike (Honda Hornet 160R) has been resting idly for more than a week. It has both a kick-starter and an electric starter. When I tried to start my bike day a couple of days back, I found the kick-...
2
votes
0answers
190 views

Honda CBR150 Race Bike Engine Problems

I have a Honda CBR150 race bike with some engine problems. The bike struggles to start, think of the way a carburetor bike would struggle to start if it hasn't been run in a long time, but it does it ...
2
votes
0answers
49 views

Why would this happen:

If anybody could help me understand this behavior, I'd be grateful: 2003 R1 5PW, Fuel-injected, has an alarm/immobilizer fitted, doesn't report any fault codes: Motorcycle would occasionally (three ...
2
votes
0answers
162 views

Slipping clutch on my Yahama YZF600R 2002 34,000km

I just bought my Yamaha YZF600r about 2 months ago and at first I noticed first and sec were slipping and last night when I went for a ride I lost all power and had to pull over. Bike will start no ...
2
votes
0answers
45 views

Kawasaki EX400 2012 cold stalling

I got a efi motocycle that stalls when cold at stop lights. It only happens if 4-5k rpm was reached before pulling the clutch. When it doesn't stall I notice very low rpm. Cold starts are iffy. It ...
2
votes
0answers
20 views

1980 yahama idleing issue

I have a 1980 xs1100 yahama , the carbs were rebuilt and synced , so air gas mixture is good to ! But it runs fine when idle is a little higher by twisting the throttle ....but if I stop at a light ...
2
votes
0answers
641 views

Engine loses power at certain rpm once it gets hot

I have a Pulsar 220 which starts good but after riding few kms, engine starts getting too hot. Even the high temp and oil change sign starts blinking. There is no issue with engine oil. As I get it ...
2
votes
2answers
122 views

Honda innova 125 brake problem

Hi I have Honda innova 125 motorcycle and I was riding and the front brake locked and I crashed the person who helped me said this was due to lack of brake fluid, now the front brake doesn’t work at ...
2
votes
0answers
283 views

Sportbike Throttle Body Out of Sync

I recently purchased a 2017 R6. At around ~450 miles I had the 600 mile maintenance done early because I noticed my bike wasn't shifting as smoothly and the engine wasn't running as smoothly (running ...
2
votes
0answers
86 views

Suspected slow leak in carb, mileage low only when time taken to consume fuel

I have a weird mileage issue in my CB Honda Hornet motorcycle. This is a version specific to India, https://auto.ndtv.com/honda-bikes/cb-hornet-160r It has a 160cc engine. During the first 1000 Kms, ...
2
votes
0answers
770 views

honda cb400 super four speed/power issue

Firstly, I have checked a similarly titled post (Honda CB400 Super-Four - Power Issue) and their symptoms are different so it's not relevant to me. My bike is a '97 CB400SF, all stock except for ...
2
votes
0answers
49 views

Strange chain sound happened just once and now bike will occassionally come to a halt and wont move even in neutral for 15 minutes

I've been dealing with an issue for weeks now with my Boulevard M95 (2005). It's been keeping me off my bike and has been... well let me just describe it and maybe someone has some educated words for ...
2
votes
0answers
751 views

Convert kick-start motorcycle to electric

Objective: Modify Honda S90 '67 so that it starts by switching the key or by pressing a button. What's needed? What are the downsides? Can I still start it using the kick-start in case the battery ...
2
votes
0answers
78 views

Honda Dirt Bike cr70r not accelerating well

This is an older bike that sat still for over 10 years. Replaced the carb, fuel lines and valve. I have tried tuning the carb to solve the issue. Bike runs fine idle and rides ok slowly (in 1, 2 and 3)...
2
votes
0answers
242 views

Kawasaki Z750S weird electrical problem when starting, any idea what could be the problem ?

I have a 2005 Kawasaki Z750s and this weekend I was on a ride and stopped at a rest stop, and when I decided to leave, I turned the ignition on, pressed the kill switch on and the start switch and ...
2
votes
0answers
53 views

Royal Enfield Classic 350: Dislocating Carburetor Clamp

I own a classic 350. While starting my vehicle, sometimes the carburetor hose becomes disconnected from the mounted clamp area. Has anyone faced this issue? If you have, please help me out.
2
votes
0answers
438 views

Motorcycle won't start sometimes

I have a 2004 Cagiva Raptor 125 (2stroke...) I had the engine rebuilt last summer: New piston, new rings, new gaskets, the cylinder was ( i don t know the correct therm) corrected: they added some ...
2
votes
0answers
512 views

Fork oil for Suzuki GSXR 155 Naked

I want to change the fork oil on a Suzuki GSXR155. Which fork oil should I use? The suspension is not working and the handlebar is vibrating while riding on speed brakers, off road drives.
2
votes
0answers
169 views

Fuel system hose routing - Triumph Bonneville

Can anybody help? I'm putting 2005 Triumph T100 Bonneville back together. I seem to have got confused with the hoses from the carbs and petrol tank and the tip over hose. Anybody know of a drawing ...
2
votes
2answers
543 views

Honda CB125F GLR 2015 stuck seat

My brother's Honda CB125F has its seat locked in and turning the key has no effect so it is stuck. What is the best way to go about opening it up so we can fix the mechanism?
2
votes
0answers
182 views

how to get to spark plugs on a C109R Suzuki?

How do I get to the spark plugs on a Suzuki C109R? I just bought the bike and did not get a manual.
2
votes
0answers
97 views

free moving bike in gear

I am using Yamaha FZ. Sometimes in morning, the bike is not start with electric as well as kick start. When i put it in gears and tried to move the bike, it will move like neutral gear. If I move the ...
2
votes
0answers
105 views

When I shut the bike down there is horrible fuel smell

2003 Harley-Davidson FXDL. After I shut it off, I get this horrible fuel smell. The bike has Mikuni 42 carburetor, Pingel shutoff valve, carburetor rebuilt, Pingel holding strong. I do not have the ...
2
votes
0answers
815 views

No power to my motorcycle

I have a Yamaha YZF600 which was running well. I began to have issues starting and had to jump it a few times, so I replaced the battery. After a couple of weeks I finally got the battery and charged ...
2
votes
1answer
621 views

Idle RPM is not setting properly sometimes

I have an Apache RTR 180 (Carbureted) Sometimes, when I downshift, and when shifting down to 1st gear (to stand still), the RPM shows somewhere around 2000. The normal idle is around 1200 - 1400 RPM. ...
2
votes
1answer
579 views

How to drain the fuel tank on a first gen (2000) SV650?

I’ve got some fuel line (top yellow fuel line in picture) from the petcock to a gas can. I disconnected the vacuum line. I read some cryptic hints about Mity-vacs and opening the throttle but ...
1
vote
0answers
20 views

Brakes dragging 1998 CB600F Hornet

I have an issue with my front left brake dragging on my 1998 Hornet. I'm trying to sort it but I'm baffled. I can visually see that the pistons retract once I release the brake lever. The caliper has ...
1
vote
1answer
36 views

Clutch slipping for half of a second sometimes

It happened twice in 2k KMs. When I ride normally on 6th gear, clutch itself releases for half of a second(maybe less) and re engages itself. But during this time engine revs as I hold gas. What is ...
1
vote
0answers
27 views

Motorcycle headlight only ‘working’ (flickering) with starter motor

Running into an issue with my 2009 Honda Hornet. The headlight does not work when the engine is turned on or off (both normal and high beam). Only when I’m starting the motor I see the headlight ...
1
vote
1answer
25 views

‘93 Yamaha SR125 Starting Issues

So I recently acquired a ‘93 Yamaha sr125. It passed its MOT in 2017 and was running for a while but has now been sat for over a year. I’ve replaced the battery, stripped and cleaned the carb. I ...
1
vote
1answer
44 views

Sudden loss of power when shifting or sitting at a light, can't idle (motorcycle)

After hitting a nasty bump on the road a month ago, which stalled my bike immediately, the engine will occasionally go from providing normal amounts of power to about 25% of that power, and it will ...
1
vote
0answers
14 views

Not turning over, and no movement on the stator shaft

My bike - suzuki 81 450 L - recently overheated and died. My fallure, 90-plus degree day and I forgot to check the oil before I left. I'm getting a click when starting and no attempt to turn over. I ...
1
vote
0answers
31 views

My motorcycle bogs

I have a 2007 Honda shadow spirit 750. My motorcycle Boggs when I open the throttle, it idles fine. When I bought the bike the guy said the petcock was bad and that there are bigger jets installed in ...
1
vote
0answers
14 views

Yamaha FZ6N idle randomly drops or increases, sometimes even stalls. Problem goes away after switching bike back on

I have a 2004 Yamaha FZ6N and quite some time ago, the idle started randomly dropping below 1000, with sometimes going below 600 and eventually the engine is turned off. i also noticed that when this ...
1
vote
0answers
24 views

Benelli 600i - Hanging Revs when decelerating and idle surge but fixes after restarting the motorcyle

Having this strange issue lately where the RPM hangs when closing the throttle or drops slowly. The idle also surges to around 2k rpm. As weird as it sounds the problem seems to go away when I restart ...
1
vote
0answers
27 views

1989 suzuki gsxr750 slingshot k

Had bike tuned up new plugs carb tuned new gas bike starts cold runs great when bike is hot will start but only idle won't rev over 1000rpm can't drive let cool down runs drives great
1
vote
1answer
41 views

5 months old Royal Enfield 350 cc stopped all of the sudden

I have 5 month old Royal Enfield 350cc with only 4600 km. My bike stopped in the middle of the highway ... fuel was leaking ... I went to the service center they told me there is an issues with fuel ...