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16 votes
Accepted

Does a carburettor engine apply fuel at high speeds when the pedal is no longer depressed?

At a base level, carburetors meter the amount of fuel they let into the engine by the amount of air that is moving through them. Vacuum is created by the piston moving in the engine and creating an ...
Justin Lloyd's user avatar
15 votes

Does a carburettor engine apply fuel at high speeds when the pedal is no longer depressed?

Carburettors are very crude in comparison to EFI systems, and so the amount of fuel entering the engine is simply a factor of the amount of air going in, which is controlled by the position of the ...
Nick C's user avatar
  • 28.8k
11 votes

To switch back to regular oil (from semi-synthetic), do I have to (or should I) flush the engine first?

Regular oil as in dino oil? I wouldn't bother. Synthetic oils are usually considered better than dino oil. Many cars don't require synthetic oil, but using a better oil than recommended usually won't ...
juhist's user avatar
  • 14.6k
10 votes

Does a carburettor engine apply fuel at high speeds when the pedal is no longer depressed?

Carburetor Circuits Will Still Pull Fuel from the System If the engine is running on a carbureted vehicle, off throttle or not, it will consume fuel. Throttle Settings There are three basic ...
DucatiKiller's user avatar
  • 32.9k
5 votes
Accepted

How often I need to change the motor oil of the Honda Fit 2008?

ALL newer Honda cars come with an "oil life" measuring system, which tells the driver when to change the oil. This system is better than using a schedule in two ways... It prevents you from changing ...
Jasmine's user avatar
  • 274
5 votes

Bushing in a motor?

Bushings are used to hold the ends of the motor shaft aligned. The motor shaft goes into the bushing and spins inside of it. You can see the bushing and the shaft in this image and get a good idea of ...
race fever's user avatar
  • 3,353
5 votes

Why should I back off all valve lash adjusters until valves are closed when changing a head gasket?

They want you to back of the lash so you don't ruin your rocker arms The system in which this head depresses the valves is the reverse of many heads. The cams (the shaft at the top of the photo) is ...
DucatiKiller's user avatar
  • 32.9k
5 votes
Accepted

Why should I back off all valve lash adjusters until valves are closed when changing a head gasket?

You want to back off the valves so you don't damage the head when you pull the head bolts. If you have tension on the valves, you run the risk of warping the head. Likewise, when you put the head on, ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
5 votes

Motor blown after first oil change of the season after sitting all winter

You know there's low oil, and then there's low oil. I gotta tell you a story, its how I got started in automotive stuff. So I was living in Germany as an American G.I. I got interested in cars as ...
zipzit's user avatar
  • 6,569
4 votes

What is an orbital motor?

ANSWER No Orbital motor and hydraulic motor are not synonymous terms. A hydraulic motor is essentially a hydraulic pump in reverse. It has one or more pistons that move in a cylinder, with valves ...
Criggie's user avatar
  • 2,978
4 votes

How often I need to change the motor oil of the Honda Fit 2008?

Your owner's manual should contain a maintenance schedule, or you could have a separate maintenance schedule booklet included with the packet that contains your owner's manual. If you don't have your ...
Glen Yates's user avatar
4 votes

Why no common ground for two 12v deep cycle marine batteries connected in series?

My hunch is that it's a bad use of the term "common ground." In the 12 V example the trolling motor voltage is assumed to be the same as the rest of the boat, so it is safe to make a direct connection ...
dlu's user avatar
  • 14.5k
4 votes
Accepted

DIY Vehicle not moving

You need a lot of gearing. When you switch the power on you are expecting that cart to go from 0 to max speed instantly... The motor does not have sufficient power for that. You need to work out the ...
Solar Mike's user avatar
  • 34.6k
4 votes

What is the button near oil dipstick in Astra G

It is warning you to read the manual before you open it. I assume that is is for the auto transmission that it is fitted to the car. It looks like you lift the black handle 90 degrees to release the ...
Solar Mike's user avatar
  • 34.6k
3 votes
Accepted

What is the purpose of this hose?

Since I can't see much of it, I would assume that it is part of the pcv system and when it comes off it allows too much air into the intake causing your issues. I would secure the pipe in place with ...
Solar Mike's user avatar
  • 34.6k
3 votes
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Bushing in a motor?

Some people call plain bearings bushings The etymology can be different based upon geography. If you have a 'bushing' in your engine it can commonly refer to a crankshaft plain bearing or a ...
DucatiKiller's user avatar
  • 32.9k
2 votes

Can you run an engine without a radiator?

Some cars designed for drag race pulls fill the coolant cavities with a hard material and remove the cooling system. This allows higher boost pressure for short periods. Also be warned without ...
Nathan Smith's user avatar
2 votes

Can you run an engine without a radiator?

Be weary of running your water pump with out fluid, that could cause damage. But as far as just the engine, it won't be an issue as long as it doesnt get hot and is only run for a short amount of time....
josh's user avatar
  • 21
2 votes

John Deere LX 266 lawn tractor engine dies

This sounds like a defective fuel cap. This is a problem with the LX288 / 277 the vent hole clogs and you get a vacuum lock situation. Replace that cap! Also, less likely is sticking valves, ...
Jack's user avatar
  • 21
2 votes
Accepted

How to tell the Difference: Condensation Drain Vs Lubrication Hole

I'm going to go with an educated guess here and say these are condensation drains. This is based on two things: These holes are on the bottom. Usually when they are lubrication holes, they are on the ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
2 votes

School bus conversion to Electric

Diesel is not going to die in heavy vehicles. There is no other option. Large diesel engines are very energy efficient, and diesel has a much larger energy density than batteries. Also, cleaning the ...
juhist's user avatar
  • 14.6k
2 votes

which lane to turn into?

I'm afraid the only answer I can offer on a Global forum is "Whatever the local traffic regulations stipulate".
Steve Matthews's user avatar
2 votes
Accepted

is it warming up the engine for a short period of time a good thing or bad?

My Kawasaki owner's handbook stated that it should not be idled for more than 5 minutes when started. However the dealer advised me to let it warm up for a few minutes (by idling, not revving), ...
Weather Vane's user avatar
  • 2,339
2 votes

Barn find 74 Volkswagen Super Beetle Hydrolocked?

Based on the description and the comments, this sounds like it may be a bigger job than you had first suspected. I have removed the jugs and could see where a piston was smacking the heads so there ...
Edward's user avatar
  • 2,857
1 vote

Starter motor or Alternator?

I'm thinking there's a connection issue. If the starter was dead, a jump wouldn't have fixed the issue. If the alternator was dead, which didn't charge the battery (so battery was dead because of this)...
Pᴀᴜʟsᴛᴇʀ2's user avatar
1 vote

Why Saab -90 loses suddenly all its power on 120 km/h but gains it back after restart?

I had a vehicle ( 1998 GMC ) that had the same symptoms . It was the battery connection . It was clean and tight but needed to be rotated a quarter turn to mesh the 2 cable connectors on the battery ...
blacksmith37's user avatar
  • 3,688
1 vote

Sylvania 9005 HB3 12V 60W, I want to know the 60W is for 1 pair or just only 1 bulb?

An HB3 60W bulb is 60W, so for a pair that is 2 * 60 =120W
Solar Mike's user avatar
  • 34.6k
1 vote

Motorcycle stopped working while riding

You mention that you have the correct ingredients for combustion as well as engine rotation, apart from one, compression. Check that. If you don't have a compression tester.. Put the bike in first ...
Orb's user avatar
  • 5,067
1 vote

To switch back to regular oil (from semi-synthetic), do I have to (or should I) flush the engine first?

(Expanding on other answers, but this won't nicely fit in a comment:) It's worth noting that many manufacturers - Nissan comes to mind, I think Honda as well - specifically say to never perform an "...
3Dave's user avatar
  • 3,159

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