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

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4answers
371 views

What is the best practice to maintain a bike?

I have an Avenger 180cc bike, I want to maintain the bike without much help from the service center, external help etc. What would be the best practice methods?
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3answers
828 views

How Does a Quick Shifter work in a motorcycle

I have often seen motorcycles like the BMW S100RR and the famous Ducati Panigale with Quick Shifter technology which allows seamless gear changes. I want to know how these things work mechanically ...
8
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2answers
458 views

Why is the engine on my Royal Enfield Classic 350 shutting down?

After travelling 7-8km on my Royal Enfield Classic 350, the bike acts as if the fuel is finished & the engine shuts down, but it starts again when I pull the accelerator. What could cause this ...
8
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3answers
161 views

What prevents engine oil from mixing with petrol in motor bikes?

Engine oil is used in the lubrication process, at the same place petrol is also there. What prevents engine oil mixing with petrol in motor bikes?
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3answers
7k views

What may happen if I do not replace my motorcycle's chain

I have a aging (y2k) motorcycle with not too many Ks on the clock. I have been told by a mechanic that I need to replace my sprockets and chain. This seems reasonable since the chain has been poorly ...
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2answers
758 views

Motorcycle chewing through too many front tyres

I have a Y2K Triumph Speed Triple that has an excessive appetite for front tyres. It eats two front tyres for each rear tyre. This is reverse what it should be. I run the tyres at about 38 PSI and ...
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votes
3answers
7k views

2001 Suzuki Katana 600 motorcycle won't start

A few months ago I bought a used 2001 Suzuki Katana 600 with about 11,000 miles on it. I rode it without any issues for the first month or so. After that I started having occasional issues with ...
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1answer
92 views

Discerning a component of a motorcycle

Here's a Yamaha XJ6N motorcycle: But I was wondering what this component here was??
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1answer
125 views

Why go for aftermarket air filters?

If aftermarket air filters tend to increase the performance of a vehicle, why don't vehicle manufacturers install something similar that is manufactured by themselves in order to increase performance?...
8
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3answers
1k views

KTM Duke 390 - Does it have to be hot to ride?

I have a KTM Duke 390 - 2013, single cylinder 373 cc motorcycle for 4 months now. I bought it from another owner when it was around 9500 km. now It's at 12000. This is my first bike, and I'm trying to ...
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3answers
644 views

What do these compression figures mean

This is a follow up question to What are the causes of fluctuating intake manifold vacuum I have a 2005 Honda CBR600 F4i which suffers from occasional hesitation at low rpm when accelerating. After ...
8
votes
1answer
134 views

Ohlins Rear Motorcycle Shock - How do I setup, care for and tune it?

I have a 2005 GSXR 600 I'm getting on the road. I bought an Ohlins rear shock for it and ordered the spring to match my weight. I can't figure out the low/high speed or the rebound/compression ...
8
votes
1answer
384 views

Carburettor jetting on installation of aftermarket air filter

I have a 150cc motorcycle and am planning to install an after market air filter(K&N) since the stock one was favoring fuel efficiency and not performance. The bike has a carburetor (Mikuni) not ...
8
votes
1answer
582 views

Two-stroke dirt bike piston running into spark plug

Recently, I submitted a post on here regarding a broken ground electrode on the spark plug of my 2005 Suzuki RM125: Bottom piece of spark plug broke off in motorcycle engine Well, I found out what ...
8
votes
1answer
80 views

Suzuki 2004 sv650s wiring

I got a 2004 sv650s Suzuki when I turn the key on the fuel pump does not come on and the CHECK light comes on on the dash. All the lights come on and the starter button does not work.All the fuses are ...
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2answers
57 views

2002 Suzuki RM250 - Dies after warm up, restarts after cleaning wet plug

Has a fresh top end. Carburetor cleaned. Fresh fuel mix. Reed valve looks ok. Air filter and intake, ok. Has good spark. After it dies, the plug is wet. Restarts after cleaning plug? I ...
8
votes
1answer
156 views

Why does my new tail light keep blowing the fuse?

I have a 1972 Honda CB350F and I got the new tail light from DimeCity. I think it was called the Buffalo style Medium tail light. The tail light turns on and works fine when I switch on the headlight, ...
8
votes
1answer
164 views

What can cause my motorcycle to shift into gear (but not all of them) without using the clutch?

I'm riding a Honda CB600F Hornet built 2006 (last model with carbs). I put it away for the fall/winter about 6 months ago. This week I was doing the maintenance, cleaned the brakes, lubed cables, ...
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votes
3answers
39k views

Start Motorcycle Garaged for Over a Year

What do I need to do to get my motorcycle running again after I've left it in my garage for over a year?
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votes
3answers
10k views

What are the pros and cons of installing an filter on a bike?

What are the advantages and disadvantages of installing high performance air filters (K&N,Green cotton,etc.) over original filter? What are the changes/working occur internally?
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votes
3answers
386 views

how to clean rust on chain (motorbike)?

slight rust on the side of the links of my bike chain. I'm runing with dry lube which is teflon based I think. The rust isn't deep. Can I go at it with a brass bristle brush, or will that damage it ...
7
votes
3answers
1k views

Is it okay to run aviation fuel (100 low-lead) in a dirt bike?

I'm wondering if it will be okay to run 100 octane low-lead aviation fuel in my 2007 RM250 motocross bike (two-stroke). Half of the people I've asked say yes, while the other half say no. Will it be ...
7
votes
3answers
2k views

How might I fix a dent in a Honda Rebel fuel tank?

In a silly move during an engine overhaul, I dropped my Honda Rebel's fuel tank and put a dent in the top side. Is it possible to pull this dent out? I've heard there is a method using heat and ice ...
7
votes
2answers
529 views

what are the advantages of upside down forks

Recently I have come across many bikes which have upside down front forks. From browsing around the internet , I was not able to get a concrete answer for why it is preferred over conventional ...
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3answers
275 views

Can a valve suddenly break in half? Versys 650 destroyed engine

this week-end, I had to disassemble an engine from a kawasaki versys 650 (early). The bike lost power while making ugly metal sounds. It never started again. RIP. context: 108.000km, mostly higway ...
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1answer
72 views

No power to my 1988 LS650 Suzuki with new charged battery

I have a 1988 Suzuki LS650 Savage from someone who jumped it off with running car. Put a new battery in it and now I can't get any power. No lights or anything. What do I need to check?
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2answers
7k views

Carburetted motorcycle stalls when accelerator is applied

My father has 1995 Kawasaki VN 800 Vulcan with low kilometrage (18 000, 11 000 miles). We had installed new Vance & Hines pipes on it (in hindsight, way, way too loud, but that’s beside the point, ...
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votes
3answers
518 views

How do I handle scarring on a cylinder head?

A few weeks ago, my Rebel 250 blew a piston, allowing the piston rod to beat on the top of the cylinder and the valves. There's some scarring there now, as well as a jagged protrusion or two. What ...
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votes
3answers
6k views

Motorcycle popping on acceleration

I have a 1975 Honda XL250 that I bought earlier this summer. Up until recently its been running great. It was leaking a little gas, but nothing too serious. When it started to get worse, I opened up ...
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votes
1answer
138 views

Should you stop a motorcycle's engine with the side stand?

My main question is already in the title, but just to make sure it's clear, what I'm asking is, is there any harm done to the bike if you stop it by lowering the side stand. Also, if anyone can ...
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3answers
330 views

Single-cylinder engine - no camshaft position sensor?

I'm doing some research on the Honda CRF450. This is a single-cylinder engine. I'm interested in the fuel-injected models (not the older carbureted versions). As far as I can tell, this engine doesn'...
7
votes
2answers
2k views

Motorcycle transmission occasionally pops out of gear

I'm having an issue where the transmission will occasionally downshift by itself during a fast acceleration. I have a 2005 Suzuki Vstrom 650 and it's been a great bike so far. At pretty high revs, 9k-...
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2answers
589 views

Motorbike rear wheel hub reassembly

I want to get a new tire fitted on my 2003 Suzuki DR650 and removed the rear wheel. Following the manual I took the chain guard off, removed the axle, made the wheel free of chain and brake caliper ...
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2answers
269 views

Suzuku Katana does not start after an accident

I have a Suzuki Katana GSX600F. After an accident I was in, I rode the bike home and all was fine except a little cosmetic damage. In rainstorm it tipped over and after picking it up and trying to ...
7
votes
1answer
128 views

Small crack/gap between cylinders on block

I was doing a head gasket replacement onnmy 86 Kawasaki ninja gpz1000 and I while cleaning the gunk off the top of the block I noticed a small gap/crack in between two cylinders (Pictures are linked ...
7
votes
1answer
79 views

The Kawasaki H2R Motorcycle has a blower, why doesn't it have an intercooler?

Why no intercooler when it has a blower? My understanding is compressed air fuel mixtures have an increase in heat and are therefore prone to detonation. In this episode of Jay Leno's Garage at ...
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2answers
220 views

Solution against motorcycle gasoline theft?

During these last few weeks, somebody has been stealing gas from my motorcycle. It's a Honda Vt 125 Shadow, and since all the wires and hoses are apparent, it's pretty easy to unplug the hose and ...
7
votes
1answer
32 views

1973 CB350-four, no spark on 1 and 4 when it's cold

When this bike is cold the 1st and 4th cylinders do not fire. Pulling the plugs and checking them, there is not spark. If you get the bike hot, it runs really bad on the way there, 1 and 4 come back....
7
votes
2answers
72 views

Honda R8X-S heat seize

I've got a Honda R8X that heat seizes when I'm riding it when it goes over 40mph. The lad I got it off said he had it re-bored and that it was run in. Will I need to re-bore this again or is there ...
7
votes
1answer
77 views

Which electrical parts in motorcycles are obligatory for basic driving capacity?

According to this survey, electrical parts in motorcycles are the most probable to fail. Which of the electrical parts in modern motorcycles are necessary for maintaining basic driving capacity? In ...
7
votes
2answers
284 views

How to inexpensively replace missing baffles on a classic bike

Dilemma I have a 1980 Suzuki GS550L. Not only did one of the previous owners completely remove the baffles from the exhaust pipes, but they welded fender washers on the end of the pipes, so the OEM ...
7
votes
1answer
1k views

Clutch dragging and making squeaking/grinding noise

My motorcycle clutch (Yamaha Diversion) has recently started dragging extremely badly; I need to rev-match up and down gears and shifting from neutral into first requires me to rev the engine, pull ...
7
votes
1answer
81 views

What is a chopper?

What modifications must be made to a motorcycle to classify it as a chopper and how does it differentiate from most stock designs?
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2answers
146 views

Yamaha YZ125K 1983 transmission bearings

I'm restoring an engine and am unable to locate 3 gearbox bearings. Identifying mark is either IXO or IKO. It is a needle roller bearing type and sits RHS crank case 1/3rd gear shaft. Mark clearly ...
7
votes
1answer
86 views

Clutch pulls in too easy after reassebling the clutch basket, what did I did wrong?

I have a 1982 Kawasaki KZ550C LTD. When I got the bike one of the bearings on the starter assembly was worn out and would slip. So I pulled the engine and had to tear it down in order to get to the ...
6
votes
5answers
1k views

Preventing visor from fogging

How do you prevent your visor from fogging? I ordered a pinlock today for my HJC helmet, but had read some good things about NEC pinkstick (some kind of wax for visor). Usually I just keep the visor ...
6
votes
4answers
5k views

Can a motorcycle's brake lever be bent back into shape?

I recently had a low speed spill on my bike leaving the brake lever rather bent. Can I bend it back (roughly) straight or it is likely to just break? Given that it is cast aluminium, I suspect is will ...
6
votes
5answers
1k views

Engine on BMW G650GS 2011 does not start when it's hot

I have a rather strange problem with my BMW G650GS. In the morning, when the engine is cold, it starts fine with a single crank. There is no problem with riding, the engine works fine and never chokes....
6
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2answers
141 views

Can you recognise this motorcycle?

Can you recognise this motorcycle?? Thank you very much.
6
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2answers
484 views

Can I avoid buying a ridiculously expensive replacement starter motor?

My situation can be described with a photo: That's my starter motor, which doesn't appear to be in a healthy condition. What I would like to know is, can I avoid spending over $500 on a new one in ...