Motor Vehicle Maintenance & Repair Stack Exchange
Motor Vehicle Maintenance & Repair Stack Exchange

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40MPG at 100MPH?

Around 1987-1988 I had a Ford Fiesta/Festiva. I was in the Army and regularly made weekend trips, driving from southern California to Central Washington a trip of about 1200 miles. I would leave in the evening at the end of the work day, and drive…
James Jenkins
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What stops a car window from falling down?

I have been trying to research how the gears of the crank mechanism of a car window works, either manual or electric. I want to know why it doesn't fall down from gravity. Can anyone link me to an animation or images that explain why it remains…
paul
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What's gonna happen if I disconnect 'single piston'

I saw similar topics but that did not explain my things... As we can see 4 stroke engine with 4 pistons Is there any chance (only for test) to 'switch-off' two pistons? For this example I'm talking about spark plug/EFI disconnect of two pistons. Is…
dexzuo
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Oil filter on my motorcycle is not coming off

Background: I own a Yamaha XJ6n. This is the first time I'm removing the filter. The last guy who owned this must have screwed it on reaaaal tight. My oil filter is refusing to come off. This should be an easy removal, but it really isn't. I've…
Mr. Meeseeks
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Impact Wrench Mystery – breaks loose axle nut, but can't undo wheel lugs…

I think there must be something I don't understand about impact wrenches. After snapping a half-inch breaker bar (with a cheater) while trying to remove the axle nut, I decided that an impact wrench might be a good investment. Between positive…
dlu
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Are resistance/capacitance based brake fluid testers reliable?

I would like to test my brake fluid to see whether it needs replacing rather than spend the time and money on it unnecessarily. I've seen inexpensive brake fluid testers on the market which work on the basis of detecting water percentage based on…
GdD
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2006 Honda CRV with engine sludge issue

The check engine light came on. Scoped it and the engine code P2647 came up. Changed the oil pressure switch and cleaned the screen. Check engine light came on again. Scoped it again and engine code P2646 showed up, so the entire solenoid was…
user19472
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Correct fitment of wheels using hubcentric rings

I have a US 2007 Yaris sedan. I'm still on the original wheels and they've had a very rough life. The ride is suffering for it and I'm looking for a new set of wheels and tires while trying to be frugal and DIY. I'll get the tires at a local…
GrayB
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Need to rotate an out of reach bolt or pin

I'm trying to fix the shifter on my dirt bike. I've located the problem, which is a pin that's come loose. The shifter kind of works, but every now and then it gets jammed because this loose pin isn't properly restricting the movement of the part…
nick
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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 and are there any advantages or disadvantages of the…
Shobin P
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I charged my car battery with no water in it

I have a car battery that I am trying to recharge. It measures 3.28v, and my charger is a Selmar Turbo 8. This is the charger I am using: Here is a picture of the ammeter gauge that I found First of all I tried to charge the battery overnight and…
George
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How do you detect and deal with a refrigerant leak?

My heat works great, but my AC is nonexistent. Just blows out normal air, which in this weather is quite hot and unpleasant. I had the refrigerant refilled two years ago, but I haven't used the car in over a year so I don't know when the AC stopped…
temporary_user_name
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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.
Gowtham
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More In Cylinder Pressure Testing Questions

So I was looking at a 06 Pontiac G6 2.4l with a complaint of low power on hills. Had been at another shop to have the transmission checked and they referred the customer to us. Road test confirms car doesn't go anywhere fast. I didn't really think…
Ben
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What's the Difference Between OBDII adapters and Toyota Mini VCI?

I've been researching Toyota diagnostic connectors, and ran across something called a Mini VCI adaptor meant for use with Toyota's TechStream software. The physical interface looks like a standard OBDII and according to this advertisement it…
Robert S. Barnes
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