5
votes
1answer
33 views

Trouble starting car, cold weather. MB A140 W168

So, I have a Mercedes-Benz, A140 W168. I moved to Finland about 18ish months ago which is when we bought the car 2nd hand. Last winter temperatures only went down to around -15C (5F) degrees, and ...
6
votes
1answer
62 views

ATMA on OBDII not Working

I have successfully connected a terminal android app to the obd port of my car. And tried dry run of many at commands, many are working as expected. But ATMA (AT command to Monitor All) is not ...
5
votes
1answer
40 views

Advice on learning automotive repair knowledge

I am an online customer service selling automotive diagnostic tools. Now I have a question, I came to my company since last October. I don't know much about our product, even though I am just a ...
5
votes
1answer
28 views

Toyota corolla verso 1.794 petrol vvt-1-t2 [on hold]

Recently Purchased Vehicle @milage 81.075 in the past vehicle has consumed 5.25 Litres of oil a full oil composition test was carried by my Garage. They also advise it is an uneconomical repair it has ...
4
votes
2answers
54 views

What is meant by bore and stroke?

All engine specifications reflect a bore and stroke number. Example Aprilia Tuono V4 R 2012 Four stroke, longitudinal 65° V four , DOHC, 4 valves per cylinder 998.9 cc / 60.96 cu in Bore x ...
14
votes
4answers
1k views

What are the benefits of a dry sump?

I've heard references to dry sumps, usually in reference to racing engines. But more recently I came across an article about a 'supercar' which stated that it had a dry sump. What are the benefits of ...
5
votes
1answer
105 views

How do old cars actually lose horsepower?

I have heard that when a car gets old it slowly but surely loses its horsepower to some degree. For example, I used to drive a 1997 Ford Fiesta with a 1.25L 1242cc engine that supposedly produces a ...
8
votes
2answers
48 views

How do I go about replacing the head gaskets in my Dodge truck?

It's a 1999 Dodge Ram 1500 4x4, Laramie SLT, automatic transmission, 5.9l magnum engine, and crew cab (222k mi). It seems to have some head gasket leaks, as there is some coolant burning. I have only ...
5
votes
1answer
30 views

2006 Honda Civic Hybrid - instrument panel lights going haywire

My wife has a 06 HCH that we bought from an individual owner January of last year. It's been running fine, until Jan 5th of this year. It seems the IMA battery is degrading, but that shouldn't cause ...
8
votes
2answers
45 views

Scooter: Motor goes off when accelerating

A friend wants to sell me a scooter for a very cheap price. It is a Chinese model (Qingqi QM125T-10M). Probably a 125cc machine. He tells me that the scooter worked fine and he used it to go to work ...
8
votes
2answers
384 views

What are some good options for bumper pushing

What is a good way to push with your bumper without ruining the body of the car you are pushing (paint scratches do not matter.
3
votes
1answer
31 views

Are there any vehicle engines that don't have a mechanical oil pump?

I my answer to How to move car a small distance without tow dolly I suggested putting a manual transmission vehicle in 3rd gear while towing with a rope or strap to apply back pressure and help keep ...
1
vote
0answers
14 views

trouble codes on a 1993 chevy silverado

when I hook my scanner up to view the check engine codes it says I have no power to my scanner. I tested all circuits and my fuses are all good. what could be my problem?
4
votes
1answer
24 views

Vehicle light problems 101 (2000 buick century)

How can make really dim brights brighter. And the dash light doesn't turn on (the prnd and mileage lights). I've jumped my car once when it died and they all turned on but they never did after ...
4
votes
0answers
29 views

Why would headlights stop working after turning over

I have a 2006 Pontiac G6. When I walk up to the vehicle and unlock it, the headlights turn on. After I get into the vehicle and turn it over, I cannot turn the headlights back on. Fog beams and turn ...
4
votes
2answers
51 views

2004 VW Passat B5.5 - Why are my wing mirrors being weird?

Today whilst I was trying to park my 2004 VW Passat B5.5, I noticed that something to do with my wing mirrors wasn't working quite right. When the toggle was on the left position, the left wing mirror ...
4
votes
4answers
41 views

Replace or recharge a battery after is has been drained?

The keys in my car were left in the on position for about 12 hours (and maybe the interior light left on) and the battery is drained. Is there any way I tell if I should replace the existing one or ...
7
votes
1answer
50 views

Issues cold starting diesel van

Our van has been progressively getting worse at starting up in the morning. It only has issues when the engine is cold. Initially I thought it might be the glow plugs. I tested their resistance and ...
6
votes
1answer
28 views

Scania clutch issue with syncromesh gearbox

The clutch of our 124 Scania stopped working properly with the "14 speed" syncromesh gearbox. The first time it happened, it ground instead of smoothly going into reverse (a non-syncro gear), to back ...
3
votes
0answers
22 views

Ford Focus 2012 Continuous Wiper Issue

I run a 2012 Ford Focus Zetec which has been having an issue, I think, when the wipers are set to continuous mode. Occasionally, the wipers will switch to intermittent mode when in continuous mode. ...
5
votes
1answer
34 views

ECM Fuse Blown what to test next

Recently I was on the highway and suddenly my car broke down and it was cranking and all but not starting so I knew some fuse has blown. I removed the indicator fuse and used it for fuse which gave ...
10
votes
1answer
45 views

What is the efficiency delta between rotary and modern four-stroke engines

Background There is a lot of opinion out there regarding the efficiency delta between wankel rotary engines and four stroke engines of various configurations (forced induction, etc). This delta, ...
6
votes
1answer
38 views

What are the basics of the combustion cycle in wankel (rotary) engines?

I'd like to understand more intimately the basics of the wankel engine combustion cycle. What I find interesting is: Simplicity of design Use of ports for intake and exhaust Conversion of energy to ...
1
vote
1answer
57 views

How would you move a small vehicle a relatively short distance [duplicate]

I'm buying a honda and the owner said it doesn't start( it's 400$ so worth it) and am trying to figure out a few things 1 would be what are some things to check on it since it hasn't been started ...
5
votes
2answers
98 views

How to move car a small distance without tow dolly

How could you move a small car a small distance (like 5 blocks) without a tow dolly or tow straps I have rope but don't have tow straps.
6
votes
0answers
40 views

Ford Tractor 5600

This is a older tractor. My question relates to the fuel system. The older fuel injectors don't have any external seals? All of them seat and 3 don't leak but one does. I was looking for a seal but ...
3
votes
1answer
19 views

2003 Chevy Malibu Deluxe. Engine counter balancer timing

I replaced my timing belt. Now the engine vibrates horribly. I believe the cam timing is 100% but I believe I didn't time my counter balancer correctly. The Haynes manual photos and description ...
7
votes
1answer
38 views

2005 Mazda 3 at warning light at cold start ups

I've noticed recently that my mazda 3 on cold starts would show the at warning light. When I start it, it normally flashes it for a few seconds then disappears. Then when I pull it out of the garage, ...
12
votes
2answers
688 views

What does under-square and over-square mean?

When building an engine, the terms over-square and under-square come up. What do these terms mean? How do they apply to engine building? Which is better for what purpose? Can you give examples ...
6
votes
1answer
71 views

What exactly is an “idle jet”?

I think this thing has something to do with injecting fluids in to the engine. What exactly is an "idle" or "pilot jet"? Does every car have one? What is their functional purpose (i.e. what do they ...
5
votes
1answer
37 views

What exactly is a “knurled piston”?

Recently I came across the term "knurled piston" and I don't know what it means. What is a knurled piston? What is the difference between that and a normal piston? Why should you use a knurled ...
6
votes
1answer
433 views

Does driving at top speed damage a car or stress the engine?

Lots of manufactures like Vauxhall/Opel and Ford seem to test their new models of cars by driving it at top speed for hours on end. What is the point of this? Does it stress an engine?
2
votes
0answers
15 views

Toyota 04 Camry [closed]

please help Changed clutch and slave cylinder Trying to bleed it but just air bubbles Can't see any leaks It's a 2004 Camry Could it be the booster ?
1
vote
1answer
39 views

Is my car safe to drive?

]1 When I make a right turn it hear a loud noise . EDIT for OP: Well it's a Nissan altima 05 . Every time I make a right turn i hear this metal noise . I check my wheels and only me right side ...
9
votes
2answers
228 views

Where can A/C condenser be located other than in front of radiator?

1953 F-100 w/ 428 Cobra Jet FE motor. I want to spare my grill and avoid putting the condenser in front of the radiator. Plus, it's already a beast to cool in hot weather, and I live in hell. (It's ...
-1
votes
1answer
32 views

2010 Hyundai Accent starts but won't stay running

Car would stop running while driving it and wouldn't start after that; changed the alternator and now it will start but it doesn't stay running. It stalls every time I try to put it in gear to drive ...
3
votes
2answers
144 views

Wheel alignment from OBD parameters

Can I calculate wheel alignment from OBD parameters. Car is Hyundai i10, and it doesn't give any Steering Alignment/ Steering Position data. The only method to check the alignment is to let the car ...
11
votes
2answers
93 views

What is the motorcycle equivalent of OBD-II?

I once met an OBD-II expert while traveling and asked him if motorcycles (especially the fuel-injected ones) employ a similar protocol. He said that the use of such a protocol is not as widespread ...
5
votes
1answer
29 views

What Front End Work Requires an Alignment Afterwards

What Front End Work Requires an Alignment Afterwards and in what case can you take measure to avoid having to do an alignment? For example the Haynes manual says you can mark the strut mount and the ...
4
votes
1answer
30 views

Calculating AFR using injector flow rate and mass air flow

Is injector flow rate = Mass fuel flow? If so then AFR = MAF/Injector flow rate. Can someone please confirm this?
9
votes
1answer
135 views

How do I get more power out of a rotary engine?

Background I'm looking at a few cars for a track day car that I can abuse. One of the vehicles I'm considering is an older Mazda RX7. The primary reasons being that it has a rotary engine as well ...
5
votes
2answers
53 views

How much horsepower to expect from a cold air intake in Dodge Ram

It's a 1999 Dodge Ram 1500 4x4, Laramie SLT, automatic transmission, 5.9l magnum engine, and crew cab (222k mi). I have a friend who could put a cold air intake on it, with a new hood. But I have ...
8
votes
1answer
43 views

Help me with my hand Brakes

I have a 2007 Honda Civic DX sedan. Recently my hand brakes stop staying up. Mechanic said the cables are good but I need some sort of clip or spring but he isn't sure because he is unfamiliar with ...
7
votes
3answers
529 views

What is an “A pillar”?

I hear the term thrown around a lot about the A pillar or B pillar ... What are these and of what importance are they? Are there any other pillars in a vehicle? Do all vehicles have all the ...
4
votes
0answers
35 views

2009 Hyundai Sante Fe - gas smell in cabin after replacing fuel sending unit. has been repaired 4x's now

Fuel sending unit replaced. Since then it has gas smell in car. It has been redone by mechanics four times now but still has a gas smell when the gas level is in the first quarter of the tank. Cap ...
9
votes
2answers
61 views

Does Ford's heated windscreen/windshield normally drain excessive current?

When getting my battery tested for an issue in this post, the mechanic noted that when my Ford's "quickclear" windscreen heating element was activated and the engine running, the voltage coming from ...
10
votes
1answer
92 views

Why do diesel fuel lines have to be bled?

Background I've had a couple of situations with diesels. One in particular where I swapped a Ford F350 Powerstroke 7.8 transmission. When I was done. The truck wouldn't start. It was a painful ...
4
votes
2answers
65 views

Car battery won't charge above 50%

I had a problem starting my car after not driving it for two weeks. After charging the battery with a CTEK trickle charger via the cigarette lighter socket, the car started fine. I had my car battery ...
8
votes
3answers
68 views

What does “Chopped & Channeled” mean?

"Chopped & Channeled" is another term I have come across in the hotrodding scene. What does it mean? What is the purpose of applying these modifications to your vehicle? Are there any negative ...
5
votes
1answer
67 views

Why do casting numbers on engine blocks matter?

In this question the OP references the block casting number his 454 GM motor. Why is the block casting number relevant information when talking about an upgrade to an American V-8 engine? Is this ...

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