8
votes
3answers
1k views

Why (almost) all dirt bikes have single cylinder engine?

Every dirt bike i know has a single cylinder engine. I myself ride a Yamaha XT660Z which has a huge 660 cc cylinder. What are the characteristics of those engines? what are the benefits of such ...
8
votes
5answers
2k views

Should rotors with rust on the rims but not the faces be replaced along with the pads?

I have an Audi A4 with approximately 35k miles. My dealership has recommended that I replace both the brake pads and the rotors and helpfully forwarded a picture to me of the rotors indicating the ...
8
votes
2answers
5k views

Oil in air intake: is this a faulty breather valve or by design?

I noticed the other day that a component (breather valve) was not fitted properly (the clip that held the valve cover breather in place was sitting between the O-ring and the lip, instead of fastening ...
8
votes
2answers
6k views

Manual transmission at stop: 1st with clutch in, or neutral with clutch out? -OR- Throwout Bearing wear

When sitting in traffic or at a long red light, is the Best Practice to have the car in 1st gear with your foot on the clutch, or in neutral with your foot off the clutch? Some say that you should be ...
8
votes
5answers
71k views

Oil in the radiator, but no coolant in the oil

The car is a '98 Buick Lesabre with the 3800 engine and about 170k miles. It appears as though some oil was in the radiator, but I haven't seen any signs of coolant in the oil. The water pump recently ...
8
votes
2answers
2k views

Low power, bad gas mileage, smelly exhaust after engine work

My 92 Civic has had low power (need to use at least one gear lower than usual to get the same power) and has been getting bad gas mileage (15-25mpg vs 32-42 mpg usual) since I replaced the head ...
8
votes
2answers
18k views

Must I Replace All 4 Tires on an All Wheel Drive (AWD) Subarau, when only 1 is damaged?

I have a 2005 Subaru Legacy 2.5i Wagon. I just destroyed the passenger-side rear tire. The tires have approx. 6/32" tread remaining, per an informal measurement with a coin (I used this guideline ...
8
votes
3answers
2k views

What is a hot patch, and how is it done?

I recently picked up a piece of metal in my tire, leading to a flat. The mechanic said he could not plug the tire, and that a "hot patch" was required. What is a hot patch, how is it applied, and ...
8
votes
1answer
211 views

How to fix freezing locks

Does anyone know how to prevent locks on car doors from freezing, this is usually only a problem in older cars. I'm not thinking of solutions like WD-40 that really only work for a few days and then ...
8
votes
2answers
594 views

Winter rims have rust patches. Should I leave them or remove rust and repaint? Any recommendations for rust remover and paint?

There are a set of winter tires on there already, but I'm not worried about getting paint or rust remover on the tires -- I've ordered some new tires already (going studded this year) and will be ...
8
votes
1answer
7k views

Malibu turns over, does not start

2005 Malibu (Classic, fleet version) with 2.2 L Ecotec four-cylinder engine fails to start. It turns over, and scattered weak pops indicate that there’s rudimentary combustion going on, but it does ...
8
votes
1answer
663 views

How do I drain the brake fluid for a 1999 BMW K1200RS?

I need to drain the brake fluid for my 1999 BMW K1200RS with ABS in order to do some minor service on the Master Cylinder, but I don't have a service manual for the bike. How should I go about doing ...
8
votes
1answer
1k views

How do I find the correct pins in a CAN-BUS connector?

This question might be too technical for this forum, but I'll give it a go. I have a 2012 BMW R1200R motorcycle with CAN-BUS. I'd like to make an Arduino interface to the connector on the bike, but I ...
7
votes
6answers
6k views

Can radiator cool down a car too much?

Recently they replaced my stock radiator with aftermarket one (at dealership, so I hope they knew what they were doing), and since then I feel that a car is not warming up enough. Even if I warm it ...
7
votes
4answers
24k views

What does the 'cc' mean on a motorcycle?

I'm relatively new to motorcycles, my flat mate taught me how to drive his two Royal Enfields around New Delhi, and for the past year and a half I've been taking care of them as they break down ;) ...
7
votes
4answers
7k views

brake rotors- blank, slotted or drilled?

There is a lot of conflicting information whether slotted or drilled rotors perform better than blank rotors. For a street car that will do the occasional track day, which type of rotor should I get?
7
votes
2answers
284 views

Keeping an old car alive?

So I drive a '97 Subaru Legacy with about 200,000 miles on it. Still runs like a charm, never gives me any trouble. Had the brakes, rotors, and calipers all replaced recently, tightened the power ...
7
votes
3answers
2k views

What to look for when buying a salvage title car

Other than the normal stuff to look for when buying a used car, what else should you check or have inspected when buying a used car with a salvage or junk title?
7
votes
5answers
7k views

How difficult is it to rebuild a transmission?

I have a 1984 Toyota Supra that is now exclusively a track car. The last round out we let some less experienced drivers take the wheel and they basically destroyed the transmission. Nothing but 4th ...
7
votes
2answers
2k views

Why doesn't anyone ever repair an automatic transmission?

I am old enough to have had about four transmission failures spaced over about 40 years and at no time did any mechanic ever offer to “fix” it; the only diagnosis has been a complete rebuild. This is ...
7
votes
3answers
3k views

What can cause excessive fog on a windshield?

Recently there has been a lot of fog on all of the windows in the car, particularly on my windshield. It's been bad enough that I've had to stop and wipe the glass off, but the fog can come back ...
7
votes
4answers
14k views

What colour should power steering fluid be?

Recently started shopping for first car, so want to know as much as possible when going into a sale. Car I looked at recently has a brown dirty colour in the power steering reservoir, but the stuff ...
7
votes
4answers
8k views

Is it all right to clean a car radiator with vinegar and chlorine?

I got the idea from this article, where it suggests cleaning your washing machine using chlorine bleach and then vinegar. I have successfully used this method to clean my household washing machine ...
7
votes
3answers
3k views

Catalysator broken? Odd rope coming out of the exhaust pipe

[UPDATE] SOLVED! Hurray! The muffler had corroded inside and it blocked the exhaust system, making bad to motor. I got it fixed and the car energy efficiency improved from 12-15 liters/100km to ...
7
votes
4answers
255 views

What clues are there to identify real mileage?

This is a bit theoretical question, maybe viable for a wiki. Suppose you want to buy a 10yo car and among available deals you see one with suspiciously low mileage (e.g. 5'000 km). Seller assures you ...
7
votes
3answers
5k views

Third brake light (LED) test

I have a 2008 Honda Civic and the 3rd brake light is having an issue. It seems in the morning (first cold start) it works when I depress the brake (I can see it light up the rear window). But after a ...
7
votes
3answers
14k views

How is “outside temperature” measured in a car?

Most cars have a display for outside temperature and I wonder how it is measured. In other words, where exactly is the sensor and how reliable is it?
7
votes
5answers
6k views

What is a good car to start with if I want to learn auto repair?

A couple of other "getting started" questions have been closed (as redundant with these questions), so I hope that my question is different and specific enough. I'm interested in learning to repair ...
7
votes
5answers
19k views

How to get a motor to Top Dead Center

I'm not sure how specific to my car this is or not, so I will include my car information just in case: It's a 1991 Honda CRX, base trim(the motor is the d15b2). On to the question: How do I go about ...
7
votes
4answers
292 views

Assuming identical and sufficient ABS, and ignoring aerodynamics, are tires the only factor for braking distance?

I had my first accident two days ago (minimal injuries so don't worry about that), and it's got me thinking about a lot of different aspects to driving and cars, such as braking. Had my braking been ...
7
votes
2answers
8k views

What is the difference between a V belt and a serpentine belt?

I can't seem to figure this out exactly. My understanding is that in either case it is a belt that is connected to the crankshaft and via a series of pulleys powers all the peripheral systems of the ...
7
votes
2answers
2k views

How to prevent body damage and rust from salted roadways?

I bought a used 2001 Toyota Camry this past summer. Overall it's in great shape, and I presently see no rust. Living in Wisconsin, we use salt pretty liberally to deal with snowy and icy roadways. ...
7
votes
3answers
216 views

Switching gears without clutch

I drove manual car for a long time but never tried to switch gears without clutch. Question: given that clutch-less shift is executed properly, does it take a toll on transmission in any way? For ...
7
votes
3answers
148 views

Where to buy interior parts, that OEM doesn't sell?

I am trying to find an armrest cushion in Altima 2008 (this part). But Nissan and all OEM re-sellers will not sell the cushion only, they are only selling it as a whole door panel, which is very ...
7
votes
3answers
3k views

Is it harmful to drive at high rpms

Does driving at high RPMs (3000-3500) in a manual transmission car cause any extra wear and tear to any mechanical parts? It obviously hurts gas mileage, but does it hurt anything else?
7
votes
2answers
3k views

What are the advantages of filling nitrogen instead of “normal” air in the car tyres?

As the question says, does filling pure nitrogen has any significant advantages, given the fact that normal air is ~80% nitrogen? Thanks for your time.
7
votes
6answers
753 views

Tips for an oil change at home: cleanliness and disposal?

Drain oil, add new oil... find oil everywhere. It spills, the funnel is full of it when I'm done and drips forever, and I'm pouring kitty litter all over the driveway. If I had a proper garage this ...
7
votes
5answers
15k views

Can I use spray paint to touch up my car?

I have several really small nicks and major scuffs on my car; the nicks from driving on the highway (flying debris hitting chassis) and the scuffs from two fender benders. The nicks have started to ...
7
votes
5answers
785 views

Is shifting to neutral on a decline more fuel efficient than keeping the gear engaged?

I always had the habit of shifting to neutral on long declines and using the brakes to slow down as needed. Intuition made me believe I'd be saving fuel as opposed to keeping a gear engaged. However, ...
7
votes
2answers
5k views

what is difference between DOHC and SOHC?

I want to know the SOHC and DOHC configurations. On what factors an engine manufacturer decides to go with SOHC or with DOHC, what should I choose? DOHC or SOHC?
7
votes
4answers
84k views

What happens if I drive without antifreeze in my car?

What happens if I drive without antifreeze in my car (no water / no antifreeze)? This is my main question. I've added some follow up questions that are specific to my situation but for the main ...
7
votes
3answers
10k views

What can cause warped rotors?

I have a forward rotor on my '04 Chrysler Sebring causing a lot of pulsation when braking. I replaced the rotor- but within about a month the problem had re-appeared. The guys at Monroe noticed my ...
7
votes
4answers
52k views

Cold start squeaking noise in engine

I just purchased a used 2010 Corolla 3 days ago. I've only now noticed that when I start the car, there is a squeaking sound coming from the engine. It lasts no more than a second. Sounds like it ...
7
votes
2answers
1k views

Do I Need to Compress the Springs to Install Strut Tower Braces?

I have a '99 Maxima. I am considering installing strut tower braces. In order to do so, would I need to get spring compression tools to hold the springs on the struts, or will the weight of the car ...
7
votes
1answer
326 views

This part fell off my car yesterday - what is it?

I drive a 2008 Honda Fit, and yesterday I found this on my driveway, resting under my front end. I know little to nothing about cars, but this looks simple enough that I think I could replace it if ...
7
votes
3answers
4k 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 ...
7
votes
6answers
30k views

Timing Chain vs. Timing Belt

What is the service life of a timing chain and how does having a chain drive cam benefit from a belt drive cam and vice-versa?
7
votes
3answers
2k views

Cleaning fuel injectors?

I took my car (2006 Honda Civic) to firestone to get an oil change and they told me I should get the fuel injectors cleaned. I was in an Advanced Discount Auto Parts store the other day and I noticed ...
7
votes
2answers
4k views

2000 Honda Civic Won't Start after Replacing spark Plugs

My 2000 honda civic ex 4-dr sedan seemed like it was misfiring. I decided to check the spark plugs to see if that was the issue. I replaced the spark plugs. The car would turn over however the ...
7
votes
3answers
3k views

Difference between high octane and low octane?

What is the difference between high octane and low octane fuel? I'm not asking if one is better than the other for my vehicle, specifically, but rather what occurs differently both scientifically and ...

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