Internal Combustion Engine. Most engines in road going vehicles are 4-cycle internal combustion gasoline engines.

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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 ...
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1answer
100 views

My feet turn black

I left the pedicure salon, started my car and drove less than 3 miles to pick up something from the store, when I stepped out of my car my feet were black... and I don't meant just from dirt, It ...
9
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1answer
228 views

How does intake manifold runner length effect the power curve of a car?

Recently I learned that a number of things such as the cam profile, compression ratio and the intake manifold runner length and volume can all effect the power curve of the engine. Here is an ...
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1answer
82 views

What exactly is a piston?

Here is a diagram of a disk brake. Notice that there is a piston (in red): This is a piston, most commonly used inside the internal combustion engine: Image 1 Source: ...
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101k views

Car shakes when in gear at red light

I bought a '96 Toyota Camry about a month ago. When I first turn the car on and the engine is cold, I can have the car stopped (in gear) and it will not shake. The idle RPMs will be at 1000. After ...
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1answer
75 views

Who came up with “suck, squeeze, bang, blow”?

A popular explanation of how a four stroke engine works is Suck, squeeze, bang, blow. The engine sucks in a mixture of fuel and air, then squeezes it together (compresses it), then it burns / ...
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1answer
114 views

What are the various kinds of tappets / lifters and the advantages / disadvantages of each

A previous question about tappets found here: What are Tappets? covers the basics of tappets. If we go the next step, here are my questions: What are the various kinds of tappets / lifters? What ...
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1answer
100 views

What is Lobe Separation Angle (LSA)?

What is Lobe Separation Angle (LSA) and how is it used in camshaft design? How is it measured? What difference does a long or short LSA make?
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1answer
8k views

Does stalling damage my car?

I sometimes stall my car, as I have a new one and the biting point is so high. Anyway, someone told me stalling damages my car, but all it does is force the engine to a stop... Does constant ...
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3answers
662 views

Why does my RPM drop when sitting idle at traffic lights?

While I'm sitting idle at traffic lights I put the car into neutral. The engine stays idling at about 1000 RPM. However every now and then it drops down to about 500 RPM and then quickly back up to ...
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1answer
83 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 ...
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5answers
3k views

What are the problems in building 2 stroke engines with a large displacement?

I understand (from preliminary research) that when engine gets bigger, with a higher displacement that it is practically not possible to have a two stroke engine. What are the implications in ...
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21k views

Is it all right to clean a car radiator with vinegar and chlorine?

I got the idea from this article, where it suggests cleaning your washing machine using chlorine bleach and then vinegar. I have successfully used this method to clean my household washing machine ...
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3answers
43k views

Oil in coolant - how much trouble am I in?

I have oil in my coolant reservoir. Could it just be the head gasket or is it almost certainly the entire engine or might it be something else entirely? Thanks in advance...
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2answers
519 views

Why is the effect of a bad fuel pump more noticable at higher speeds?

I get that the main effect of a bad fuel pump is that the engine will cut out at higher speeds, and that this is often not easily noticeable until that happens because there are little or no prior ...
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2answers
313 views

How to test if oil is leaking into combustion chambers?

How can I test whether oil is leaking into cylinder combustion chambers and getting burnt in case of oil level loss? As opposed to, for example, leaking through the oil pan or the timing chain cover.
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2answers
130 views

BSFC (Brake Specific Fuel Consumption) - How is this a beneficial measurement?

Brake Specific Fuel Consumption or BSFC Measuring various attributes of an ICE (Internal Combustion Engine) and how it performs certainly gives a greater understanding of how a particular ICE ...
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3answers
97 views

Merits and demerits of OHV vs OHC

Can anybody tell me about the merits and demerits of OHV (overhead valve) vs OHC (overhead camshaft)? Some experts say that an OHC engine will run faster than OHV engine. Why is this?
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3answers
107 views

What are common cold weather starting issues with cars?

Based upon the current weather in parts of the Northern Hemisphere, I would imagine there are some people suffering from all manner of cold related vehicle issues. What are some of the leading issues ...
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3answers
2k views

Car won't start, possibly due to ants in batteries

Yesterday there were a ton of ants crawling out of some hole in my backseat. I sprayed the shit out of them. This morning, when I try to start the ignition, my engine clicks a lot but won't turn ...
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2answers
143 views

Natural Gas Engines - What are these things?

Someone I knew when I was younger converted a car to run on compressed natural gas (CNG) because CNG was extremely cheap in comparison to petrol or diesel. How can cars be converted to run on CNG and ...
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3answers
235 views

What do the terms “combined port” & “direct injection” mean?

I heard these terms recently as part of the description of a new car. I know that there are intake and exhaust valves in the engine that are controlled by cams on the camshaft (if that helps you ...
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3answers
148 views

What prevents engine oil from mixing with petrol in motor bikes?

Engine oil is used in the lubrication process, at the same place petrol is also there. What prevents engine oil mixing with petrol in motor bikes?
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4answers
19k views

2009 Toyota Camry 2AZFE idle vibration remains after new motor mounts

My wife's Camry went in to the shop 2 months ago for a rough idle. We bought the car used in February with 72K miles. We've put on 10K and decided to have a mechanic look it over and tell us what it ...
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3answers
60 views

My BMW 325xi smells like gas

It is difficult to start my BMW it runs rough and smells like raw gas from the exhaust pipe. My check engine light is on. What could be the problem? I just had the engine replaced I am over 8,000 ...
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1answer
79 views

How does Valve Overlap affect emissions?

In this question, it is suggested that valve overlap can affect emissions. In what way can valve overlap affect emissions?
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1answer
616 views

How to use an engine stand

This is one thing which I have asked many times on a car forum and never received a satisfactory response for. I know that the engine block is somehow bolted onto an engine stand like the one ...
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1answer
479 views

Put Stop leak into engine. Can I reverse the process?

I accidently poured Barsleaks stop leak for the radiator into the engine oil compartment. Is there any way I can reverse the process? The stuff is hardening already. This a 2004 Volvo S80.
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3answers
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Looking for suggestions about what to try and fix on my tecumseh snow blower engine that stalls after you stop putting load on it

I have a troy bilt snow blower with a tecumseh engine and it starts great and runs great. Most of the time, anyway. It will scoop up snow and throw it just fine, and then for no obvious reason it ...
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1answer
1k views

Car Suddenly Decides To Not Crank

Today I turned the key to start up my car and all the lights (headlights and instrument panel) came on bright and normal, but the engine made absolutely no sound. It wouldn't start, it didn't even try ...
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1answer
273 views

Is the unreliability of the 400 Small Block Chev an Urban Myth?

The Gen 1 Small Block Chev gradually grew to 400cid. To achieve this massive volume the bores were siamesed and the conrods were shortened.The engine when produced in passenger car form had the same ...
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1answer
100 views

How often do you need to run a car?

I have a car that is garaged and not used much. How often should I take it out for a drive and for how long each time? I currently get it serviced every 10,000 KM.
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1answer
129 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 ...
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1answer
350 views

Carburettor jetting on installation of aftermarket air filter

I have a 150cc motorcycle and am planning to install an after market air filter(K&N) since the stock one was favoring fuel efficiency and not performance. The bike has a carburetor (Mikuni) not ...
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733 views

Can you stop fuel delivery to one cylinder of a 2003 Ford F150 with 5.4L Triton Engine?

Can you disconnect a wire so gas will not pump into the cylinder? I have a spark plug blown out and need to get my 2003 F150 5.4 Trition engine home without paying another tow charge.
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3answers
190 views

How to work on engine out of car?

I'm currently doing an engine swap on on 97 Corolla Levin, need to swap over the exhaust manifold, water pump etc from one engine to the other, but not sure what the best way to handle the engine ...
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5answers
13k views

Doing my own fuel induction service - how to, and how difficult?

I was recommended to get a fuel induction service for a 2002 V4 Camry, and am considering doing it MYSELF. The reasons for considering this are: My car idles a bit rough, especially when the AC is ...
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1answer
81 views

Can't find schrader valve

I have a 89 camaro with a 350 engine, where can I find the fuel valve where I connect the fuel pressure tester? I looked up videos on where it's located but mine doesn't seem to have it, is there ...
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2answers
225 views

Follow up question on spark plug heat range

@vini_i gave a great answer to my previous question here (What is spark plug heat range) Part of that answer is that the reason for spark plugs having different heat ranges is that if it runs to ...
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1answer
61 views

Would bored out 307 need new heads

I have a Chevy 307 with casting number 3970020 and everything I've read says this particular block can be bored out to 4" effectively making it a 327. I plan to have my machine shop test it and make ...
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1answer
9k views

OHV vs. OHC: which is faster in speed, horse power?

What are the main differences in OHC and OHV engine designs, and which is faster or more powerful? Also, which is more reliable?
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1answer
76 views

Pneumatic Valve Spring Operation in Formula 1

In the 2006 Formula 1 World Championship the rules allowed for pneumatic valvesprings. These engines were required to have a 90° V8 engine with 2.4 liters of displacement, 4-valve-per cylinder layout ...
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2answers
3k views

Low power, bad gas mileage, smelly exhaust after engine work

My 92 Civic has had low power (need to use at least one gear lower than usual to get the same power) and has been getting bad gas mileage (15-25mpg vs 32-42 mpg usual) since I replaced the head ...
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1answer
1k views

What do i need to know when replacing a valve cover gasket

I have an oil leak from a cracked valve cover gasket that i want to replace myself. I bought the gasket nearly 6 months ago and i am apprehensive at doing it myself without sort of feed back as to ...
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1answer
41 views

2006 VW Jetta TDI EGR cleanup

I am going to cleanup the EGR pipe in my VW Jetta TDI. Are there any special considerations on how to remove the carbon which might be blocking the flow?
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1answer
51 views

Roller rockers to a stock valve train

78 Nova but the engine is from a different car; casting # V0707CMH. I have a 350 with 305 heads. Stock valves, pushrods, cam, and lifters. The nuts on my stock rocker arms are in need of replacement; ...
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1answer
151 views

newly rebuilt engine, long warm-up & severe shaking

I have a 2002 Toyota Celica GT with a newly rebuilt engine (ran out of oil and threw rods) but problems still persist. I was told by the mechanic to allow myself a 500 mile break in time of not ...
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0answers
78 views

Clunking sounds when decelerating or idle with clutch engaged

I have an issue with a 2010 Opel / Vauxhall Insignia 2.0 CDTI Sports Tourer (aka Buick Regal in the States if I'm not mistaken) and I'm having difficulties pinning it down. It's going to be a lengthy ...
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1answer
129 views

Car stalls/dies suddenly while driving and is not starting again

I own a Indian Make TATA INDICA Ev2 (CR4) Turbo Engine car. I did rebore recently and the mileage was 130,000 KMs. After rebore first service of 3000 km is successfully completed and now I'm facing a ...
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2answers
318 views

Fiat Punto Wont Start. Fuel Light & Three warning lights flashing

My Fiat Punto 1.2 Year 2000 MK2 (I believe) will not start. The engine turns over but the car won't start. The fuel light is flashing and petrol gauge says empty which isn't the case. There are three ...