0
votes
0answers
2 views

Could Hydrogen Be used a Fuel?

I understand that it may be easier/cheaper to us fossil fuel but hypothetically could hydrogen gas be effective as a fossil fuel replacement? Would we need to care more of it and or use more of it ...
24
votes
5answers
12k 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 ...
1
vote
0answers
8 views

I need to replace an engine in my heritage

My 2002 heritage has over 48,000 miles on it and is making a lot of noise so I would like to replace it with a 2003 road king motor. Would it line up and bolt in without any trouble.
7
votes
1answer
37 views

Wankel Engines - Port Tuning

Port Tuning Wankel Engines In many ways, a wankel engine is like a two-stroke engine. You can open up the ports to change the timing regarding exhaust and intake. I've ground many an intake, ...
4
votes
0answers
11 views

Diagnosing fuel pump relay on 2004 Acura TSX

My wife's '04 Acura TSX began having issues starting towards the end of last summer. It would turn over just fine, but took 5-10 seconds to actually start running. The problem was intermittent - some ...
3
votes
0answers
13 views

Semi-permanent power inverter

I'd like to install a semi-permanent 500 watt inverter connected to the car battery for greater power delivery. The battery is in the passenger area, so there's no need to run wiring through the ...
5
votes
3answers
17k views

If one coil spring needs replacing, do I need to replace both?

I just had my car serviced and they discovered that the front, near side coil spring is "incomplete" and needs replacing. I'm getting conflicting advice about whether I need to replace both front ...
1
vote
1answer
7 views

How can I check if a wheel axle is straight?

I might have bent the front axle of my motorbike. How can i check if a wheel axle is straight? I'm looking for tips on how to do this in case i don't have dedicated tools available.
1
vote
1answer
12 views

Missing a bolt to take out to remove alternator 2001 Nissan sentra

I am trying to remove the alternator from my 2001 Nissan Sentra. I have taken the belt off, have taken a screw out of each the left and right side (looking from the front of the car). It seems like ...
0
votes
1answer
14 views

No power to my 1988 LS650 Suzuki with new charged battery

I got Suzuki LS650 Savage from someone who jumped it off with running car. Put a new battery in it and now I can't get no power. No lights or nothing what do I need to check?
7
votes
1answer
28 views

How is it advantageous for fuel management to detect negative mass air flow?

Here is the flow-voltage mapping for the Bosch sensor utilized by my E39 M5. I find it curious that readings below 1.7 V correspond to negative flows. Questions Is it possible that air can flow ...
15
votes
4answers
83k views

Just HOW urgently should I replace this tire? Is it safe to drive on at all?

It's my rear right tire. It has a significant bulge in the sidewall. Here are two pictures of the bulge (original URL): Do I need to replace it before I ever drive on it again? Should I put on ...
-4
votes
0answers
13 views

did you find out what was wrong with starting the honda

My Honda is not starting I read a foram you posted. My windows won't roll down the shifter is locked in park and will not start. My lights work my radio works and the only light comes on is the ...
-2
votes
0answers
7 views

Honda Activa very low milage & side body damaged

I purchased one week back honda activa. My first question is, now, one side body is damaged. Is it possible to bring it's look back as like original ? Or it needs to be replaced with new ? Do I need ...
0
votes
0answers
11 views

1st and 2nd cylinder not combusting in dual carburetor'red setup

So I have a Maruti Esteem engine with a dual carburetor on an engine dyno and everything was already installed when I joined this lab. We seem to have a problem when trying to fire the engine. 1st and ...
0
votes
1answer
9 views

2005 sebring overheating

My 2005 sebring is over heating , there is no sign of water in oil,but a little milky film in the coolant reservoir . What are the possible causes. we let the car run at idle about 15 min to get the ...
-1
votes
0answers
9 views

Changed engine in 2003 Dodge Ram 1500 3.7

Changed the engine in my 03 Dodge Ram. Lights work etc but engine does nothing when trying to start.
4
votes
4answers
168 views

How to replace Alternator out (2001 Nissan Sentra) [pictures inside]

I am trying to remove the Alternator on my Nissan Sentra 2001. I believe I need to take the alternator belt off. It's tightly on the pulley - see picture How to make the belt loose? I am told that ...
3
votes
1answer
14 views

2003 Impala no brake lights

My 2003 Chevy Impala has no brake lights. Checked all the fuses, checked the brake switch and bulbs. I do have my 3rd brake light on the top of my trunk and I have all my other lights but no brake ...
2
votes
2answers
22 views

My 2004 PT Cruiser is overheating

I have tried everything got a new radiator, thermostat, put blocked seal permanent head gasket fix. So I started my car and let it run for 15 minutes, after that I see no antifreeze in the ...
15
votes
3answers
30k views

What exactly is a “burnt valve” and what causes it?

I've come across this term a couple of times in the context of diagnosing engine-related issues, but don't know what it refers to. Here is an example from an automotive forum I frequent: I gotta ...
11
votes
1answer
1k views

Recreate new car smell

I bought a second hand Toyota Sienna 4 months ago. Even though it is a 2009 with 100,000km on it, the interior had that "new car" smell to it, and held it for several weeks. Four months later, the ...
1
vote
1answer
17 views

brakes wont bleed after replacing lines from mc back 98 gmc jimmy

98 gmc jimmy 4.3 liter. brake pedal to floor after ok previous day. eventually stops me although don't stop on dime. hubby replaced lines from mc back (rubber and metal) part of line. Tried to bleed ...
18
votes
6answers
32k views

Is it OK to mix oil of different viscosity in a Wankel engine?

I have a Mazda RX-8 (with a Wankel rotary engine). Mazda advises North American owners to use 5W-20 oil. The engine was just replaced 200 miles ago by the dealer so it currently has 5W-20 in it. ...
-1
votes
0answers
17 views

What is the average speed of loaded trailer when they design it?

I live in Jakarta where the traffic is really bad. When I pass the highway (which also stuck, I saw a lot of trailer and truck running only 10-20 km/h. Is this normal? Well, my question is when the ...
3
votes
1answer
17 views

What is this part on a 1997 Chevy Suburban (4WD) [picture inside]?

We have a 1997 Chevy Suburban, 4WD. Occasionally, when turning right (usually from a dead stop) there is a distinct "clunk" sound that comes from below the drivers side floorboard (with an equally ...
4
votes
3answers
102 views

2004 Hyundai Sonata starts and then dies

My aunt has a 2004 Hyundai Sonata. It's been running rough for quite a while (few weeks, months?) now - it seemed to coincide with her daughter hitting a huge pothole/bump. She drove about 40 miles ...
3
votes
1answer
25 views

Electrical issue in vehicle - fuel gauge drops to zero when horn is activated

Here is what I have been dealing with. Posted over on my vehicle specific board, but no one seems to have any idea. Instead of reposting everything hashed over there, I will post the original question ...
7
votes
1answer
118 views

Short shifting after full throttle

Other than normal wear and tear, are there any detrimental effects or added harm done to the engine by going full throttle in 1st and/or 2nd gear, then shifting up well before redline (say 4k rpm on a ...
5
votes
3answers
10k views

Steering wheel “center” different from vehicle “straight”

I just had a 4 wheel alignment done on a vehicle. While taking it for a test drive, I noticed that the steering wheel is not quite centered for the vehicle to drive straight. It's not pulling in ...
2
votes
1answer
87 views

2014 Dodge Grand Caravan will not shift out of park

I was wondering if anyone know where to start a repair on a 2014 Dodge Grand Caravan that will not shift out of park? • The “Malfunction Indicator Light” is currently on • The “Electronic ...
4
votes
2answers
26 views

93 Dodge Dakota ATF cooler line

I had to replace the transmission in my 93 Dakota. To get it to drop I had to cut the metal coolant lines that lead to/from the radiator. The stock lines are .315 ID. My question is, can I use a ...
6
votes
2answers
37 views

Identifying Lug Nuts that came with Motegi Wheels

I'm looking for some help identifying the Lug Nuts that came with the wheels I recently ordered and had installed on my car. The purpose of identifying them is to be able to go get the proper tool(s) ...
3
votes
0answers
24 views

Cranks, but No Spark and Can't Connect to the ECU

It just never ends. 98 Mazda 626 GF 2L. It cranks great, but there's no spark at any of the plugs and I can't connect to the ECU. Coil pack is new, I've driven it maybe five times since I replaced ...
3
votes
0answers
31 views

Pivoted curved-path piston engine

Years ago, I saw a documentary about engine efficiency where people were testing a pivoted, curved-path piston engine. The claim is that the standard piston engine, with straight up-and-down path, ...
1
vote
1answer
22 views

89 Pontiac Trans Am GTA Stalls No Start

A friends 89 Trans Am with a 5.7 (L98) PFI stalls and will crank, but not restart until the car sits for a few minutes. I haven't actually looked at it yet. I'm guessing something is getting heat ...
5
votes
4answers
29k views

What precautions are needed when charging a car battery in an apartment?

Suppose a car owner lives in an apartment building and parks his car nearby. He wants to detach the battery, bring it home and charge it with a mains-powered charger indoors. How to properly handle ...
8
votes
5answers
12k views

Why can some cars go through water while others can't?

Why can some cars (mostly old Russian cars on YouTube) seemingly go through water while others can't? I'm talking about situations when the water level is at half the height of the car, so the engine ...
3
votes
2answers
43 views

2006 Audi A4 2.0

I am in the process of increasing horsepower with more boost in my turbo. What's the max boost I can do if I did the k&n air filter upgrade and put a 2.5 down pipe and 2.5 inch exhaust all the way ...
9
votes
2answers
1k views

How exactly does Sport Mode work in an automatic Subaru Outback?

I have 2008 Subaru Outback (160K miles) with an automatic transmission and have been curious about the Sport Mode that can be shifted into. I read in the car's manual that it increases pickup and is ...
6
votes
2answers
55 views

Is it better to hook up a Battery Maintainer for 2 months outside, or take our chances with the battery?

My wife and I are going to be out of town for 2 months, and one of our cars will be staying home and not getting much driving. We have a Black and Decker Battery Maintainer that we were considering ...
5
votes
1answer
35 views

2010 Ford Taurus keypad panel pulling away

I just bought the car and in process of discussing the issue I have with the door keypad panel pulling away. The dealer promised to get a garage(close to my house) to fix it for me but I'd like to ...
2
votes
2answers
53 views

Coil popped out of head

I've got a 1999 F250-SD XLT 4×4 that the coil just popped out of the head what would cause that? I've not done anything to it yet
8
votes
2answers
11k views

Push start a car with automatic transmission

Is it possible to push start a car with automatic transmission? Use case: Let's say the battery is dead or you have a bad starter. I know this can be done on manual cars by putting the car in to gear ...
4
votes
1answer
24 views

What kind of DLC did Toyota's have before switching to OBDII?

What kind of DLC did Toyota's have before switching to OBDII? What year did they switch to OBDII outside the United States?
5
votes
0answers
27 views

The stone chip rust doesn't go away

Last year, I had a big stone chip with growing rust. I did thoroughly sand it, applied primer and painted it. It was not supposed to look good, I just wanted to prevent the rust expansion. After a ...
4
votes
1answer
18 views

Low beams don't work but the high beams work in a 2002 Toyota Tacoma

I have a 2002 Toyota Tacoma Pre-Runner where my low beams don't work but my high beams do work. I've replaced the headlight bulbs and relay switch, and still the low beams don't work. Any ...
5
votes
2answers
31 views

1999 Subaru Forester - bad acceleration, rough shifting

I have a 1999 Subaru Forester with an automatic transmission and a 2.5 Liter Motor. It has poor acceleration and rough shifting I started to notice 'hesitation' on take off. It just slowly ...
3
votes
0answers
19 views

Would JB Plasticweld work well for radiator repair?

I have a small crack in the plastic part of a radiator. I first applied JB Waterweld, and that didn't work because it didn't bond to the plastic very well. So, I removed the Waterweld by scraping it ...
-1
votes
1answer
15 views

How long do the entire combusting cycle take?

I know that when the gas combust it do so in millisecond. But I find it very hard to believe it goes though that entire process that fast. The piston is still a mechanical part and will add a lot of ...

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