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34 votes

How to add a 7th gear to a car to enhance fuel economy?

This is something that used to be quite common - in the '60s and '70s, people would add an electronic (or manual) overdrive to the back of the 4-speed gearbox to give an extra gear (usually two, as it ...
Nick C's user avatar
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27 votes

How to find a part lost in the snow

Is it magnetic? if so, a big magnet (from a speaker for example) might help...
Solar Mike's user avatar
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22 votes
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Tightening Stud Without Bolt Head

You take 2 nuts and put them on the same set of threads. Then lock them against each other by loosening the lower nut and tightening the upper nut. Then use the upper nut with your torque wrench to ...
Mobius's user avatar
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17 votes

Can't get into trunk of 2000 mercury marquis

If the trunk was overfilled and had to be pushed closed, you might have success with pushing down on the trunk (with as much force as you safely can) while trying to operate the mechanism. If a force ...
JPhi1618's user avatar
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17 votes
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When should I disconnect the battery to stay safe during repairs?

These are some general guidelines when working with electricity on vehicles: Always remove any jewelry, to include rings, necklaces, watches, etc. If one of these items should come in contact between ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
17 votes

Should I accept this help in fixing a 1" hole in my radiator?

Do it right the first time. In the best case the "quick and dirty"-fix fails at the first pressurization, in worst case when you need it at most. What should concern you more: How does a ...
Martin's user avatar
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16 votes

Should I accept this help in fixing a 1" hole in my radiator?

Aluminum foil is at best a very temporary fix to get you to the mechanic, it's not a long-term solution. Your mechanic is right, the hole shows that there's damage to your radiator, probably due to ...
GdD's user avatar
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15 votes

How to find a part lost in the snow

If the area you lost it in isn't too large, you could shovel the snow into a big bucket, bring it inside, and let it melt. This could be tricky if the area you might have lost it is large, or if the ...
Nuclear Hoagie's user avatar
14 votes

Can't get into trunk of 2000 mercury marquis

Even if the seat does not fold down, you can unbolt it. Remove the bottom part first, then the back. This happened in my mother's Camry several times(bad latch mechanism) and I had to remove the ...
rpmerf's user avatar
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12 votes
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Is it safe to fix a bent motorbike wheel?

Fixing a bent motorcycle wheel is situational. If you are on a 125 to 200cc motorcycle using it for commuting purpose and will be driving under the speed limit, I would not be worried and its ...
Shobin P's user avatar
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12 votes

How should I find a mechanic?

I don't know how the things work here and how can I find a good(also affordable) mechanic near me? The best way to find a "good" mechanic is word of mouth. Ask your friends/relatives/work ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
11 votes

Air chuck replacement

Definitely a compression fitting - designed to be unserviceable. Your first option is boring - get an assortment of O rings and see if any of them fit the need. You could get a barbed air chuck in ...
Criggie's user avatar
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10 votes

How to find a part lost in the snow

Install a metal detector app on your phone. Seriously. They work pretty well.
bishop's user avatar
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10 votes

How to add a 7th gear to a car to enhance fuel economy?

As @SteveMatthews points out in the comments, it depends on the make/model of the car. To answer your question outright, though, you cannot just "add" another gear. A transmission in most cases are ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
8 votes
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BMW 1 Series (2016) Bumper Repair

It will most certainly be more expensive if you get a professional to repair this bumper for you. However, it will be a safe investment on your trade-in if it is restored professionally. We cannot ...
Jonathan Musso's user avatar
8 votes
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Best permanent fix for a punctured tire?

I'd look at it in this lineup in order of precedence: Take it to a shop and have them put a patch on the hole from the inside of the tire. Pro: Best permanent fix Con: More expensive (sans ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
7 votes
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Wheel rim chrome repair

That's not steel and chrome, that's aluminum. There is a coating over the rim. It's some sort of epoxy. It seals the oxygen from touching the aluminium so aluminium oxides aren't created. What you ...
DucatiKiller's user avatar
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7 votes

Is it safe to fix a bent motorbike wheel?

IMO, it is not I'm considering 3 types of rim. Carbon Fiber Billet Forged Aluminum Alloy Cast Aluminum Alloy All three material types do not lend themselves to flexibility. The brittle nature of ...
DucatiKiller's user avatar
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7 votes
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Sideways Impact with Median

We can't say how likely it is you've sustained damage as there isn't enough information, and opinion based questions are off-topic, however I can give you information to make your own assessment. A ...
GdD's user avatar
  • 17k
7 votes

How to add a 7th gear to a car to enhance fuel economy?

TL;DR: If you really must, try changing gear ratios. But what you actually want is a new car with automatic gearbox. A 6 gear car must be a pretty modern one (15 years old or newer). Which means the ...
Pavel's user avatar
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7 votes
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What is the most common end of life issue for a car?

Depends on how you consider the value... An insurance adjustor would just look at value of vehicle vs. damages to repair. So, common thing that causes vehicles to get totalled via an insurance ...
blahblah's user avatar
6 votes

Can this tire sidewall damage be repaired or should I replace the tire?

If you decide to keep driving on this tire, don't use superglue on that rubber flap. When superglue sets it becomes rigid and brittle. The tire will flex a bit when you drive, and break the glue bond ...
Hobbes's user avatar
  • 4,412
6 votes

Repairing a motorcycle tire puncture. With heat or without heat?

This is a standard patching technique for car and motorcycle tires Three components of a good tire repair include the following Pressure Heat Vulcanizing glue The combination of the three ensure ...
DucatiKiller's user avatar
  • 32.9k
6 votes

Wheel rim chrome repair

We see this hard chrome chipping and often. It is caused by the materials; specifically the large hardness difference between the chrome plating and the aluminum wheel material. The more flexible ...
Fred Wilson's user avatar
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6 votes
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Preventing debris from falling in engine while changing valve cover gasket

Yes, debris will cause damage, however the valves cover gasket doesn't stick that hard and if it is the original, they come with some kind of rubber material, very easy to take out even in one piece ...
Aram Alvarez's user avatar
  • 3,346
6 votes

A/C still malfunctions after repair. How concerned should I be?

My experience with AC is limited to what I have been studying both in book and video form. From everything I'm reading you really do need to replace the receiver drier when you replace the compressor. ...
cdunn's user avatar
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6 votes
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Mazda 2 engine fan starts after turning engine off

Great question. It sounds like the problem is linked to the coolant level, and not the AC. I'm not familiar with the plumbing in this particular cooling system, but it is definitely normal for the ...
MooseLucifer's user avatar
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6 votes
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What will happen if a small nut is lost under the valve cover?

Sooner or later it will give you headaches and you will need to "at least" remove the valves cover and/or oil sump. If the engine head has open ports that runs down to the oil sump, it may go over ...
Aram Alvarez's user avatar
  • 3,346
6 votes

How to add a 7th gear to a car to enhance fuel economy?

There are a number of responses on here that mention that it's infeasible to add a 7th gear to improve fuel economy, but none of them seem to actually answer the theoretical question of adding this ...
Kitsunemimi's user avatar

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