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

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Top Speed varies even when using the same bike

I own a Hero Honda CBZXtreme bike. The top speed that I have reached is 122Km/Hr. But I am not able to reach this speed always. Sometimes the speed does not even cross 105 Km/Hr while travelling on ...
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4answers
885 views

Car engine starts only for a fraction of a second and doesn't anymore?

Recharged the car battery, dashboard lights all on, starter motor producing the starting sound. Engine not starting. After seeing this question, I cleaned the solenoid brushes and at the first turn of ...
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2answers
112 views

Filled oil with 10L - the car now has problems with the engine cutting out or badly vibrating the car

My husband added 5L of oil to the car, he was told to add another 5L. Now the car makes a very loud sound almost like a vacuum. The car switches itself off when started. Speed picks up very slowly (...
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3answers
595 views

How do I reduce engine idling rpm without stalling it?

Considering idling losses are present in every engine, reducing the idling rpm might be providing significant savings. But, as I noticed on my bike, the chances of engine stalling increases with ...
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2answers
86 views

Engine doesn't want to stop

I have a '59 Nash Met. with a straight 4. It runs great, but when I turn it off the engine continues to run for up to a minute, sometimes violently shaking as it comes to a halt. Any idea what causes ...
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3answers
183 views

Should I clean the engine area

Should I clean the engine area to remove years of built up grease and dirt? What are the benefits?
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3answers
4k views

92 Civic engine won't start after replacing head gasket

I just replaced the head gasket in my 1992 Civic. Started it up before putting everything back together (just a second since it had no coolant, exhaust wasn't connected, etc.) and it ran fine. But now ...
2
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2answers
183 views

Are engines of the same model bike identical?

I am planning to buy a Yamaha Crux from the showroom. I'd like to know how to compare the engines in each of the available bikes of the same model. Will they differ in any way? One mechanic I know ...
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3answers
577 views

What happen if an engine is welded directly to frame (no mounts)?

Just curious ... any downside beside a lot of vibrations?
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2answers
432 views

What does CC refer to when describing an engine?

I have been learning about various older cars on Wikipedia. I've always wondered what the "cc" refers to in the engine description. For example: 1964–1969 Porsche 911: 1991 cc 1965-1969 Porsche 912: ...
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2answers
146 views

how a car engine can get accustomed on some behavior?

A lot of people say that a car engine gets accustomed to the driver style and in particular to specific RPM gear changing and it will perform into those "learned" parameters. I must mention that I am ...
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3answers
4k views

Why would welch plugs start leaking?

I have a VW Citi Golf, and the Welch plugs on the engine block suddenly started leaking water. The engine sounds fine, but it obviously leaked a lot of water and although I didn't drive far, I'm not ...
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3answers
129 views

What is this tank for ?

I just bough an old (1980s) Nissan Pathfinder. In the engine I have managed to identify the engine-oil hole, the radiator-water hole and the windshield-washer hole (you can tell I'm a car expert!) ...
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2answers
4k views

What could cause an engine to make a chirping sound when it's first started up?

I've owned a Diesel Peugeot 307 for a year now but during the recent winter months I have noticed a strange sound in the engine when I started it up. As sounds aren't well described with words, I have ...
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2answers
76 views

Engine died after driving fast on highway

I drove my 2004 Ford Ranger 3.0L V6 on the highway at 120 kph (65 mph) in second gear, and the engine died. Is it seized or can I repair it? The transmission fluid is still the proper color and doesn'...
2
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1answer
94 views

Supercharger calculations

How to determine safe supercharged pressure and CFM for a motor cycle engine (fuel injected 149cc (9.31 cubic inches) 12.9 bhp?
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2answers
82 views

Lapping Valves - Using Water as Test Medium

I've lapped my valves and want to check if they are sealing properly. Everywhere that I've read talks about using stuff like, acetone, gasoline, paint thinner... to fill the exhaust/intake ports and ...
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3answers
219 views

Popping Sound when A/C is on - 2009 Kia Rio

I've noticed that, when I first start my car, there is an intermittent popping or clicking sound coming from up near the engine (sometimes it almost sounds like a very quick burst of air escaping a ...
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3answers
315 views

Lugging vs stalling an engine

Does stalling an engine count as lugging it? I know lugging is not good for the engine for various reasons. Does stalling do those to the engine as well? Thanks
2
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1answer
123 views

Turbo gain level

I have a question - do you have any idea about potential power level of 132 kW (180 HP), 700 Nm MAN truck (TGL) 4.5 litre engine with damaged (not working) turbo? Would it accelerate to 55 km/h with ...
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2answers
2k views

Engine oil leak from motorcycle

I'm having this peculiar problem. There is an engine oil leak from my 160 cc motorcycle. The thing is that, I got the engine oil changed couple of days back, by a nearby mechanic. Now the problem is ...
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2answers
188 views

1999 Toyota Corona burning through oil in a week

I have a 1999 Toyota Corona with a D4 engine. The engine is giving me trouble and seems to be burning all the oil. It burnt through in about a week (after topping it up completely), and I say burn ...
2
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2answers
5k views

Should I replace a “blown” engine on my John Deere mower?

I have a 2005 John Deere 115 19 HP automatic riding mower. After leaving it in the garage all winter, I started the mower, drove it about 50 yards, and engaged the blade. It went about 20 feet, made a ...
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2answers
3k views

Squeaking under the hood only while throttle is pressed

My 2001 F150 with 255xxx miles has a squeaking under the hood. It is only present while the throttle is pressed while driving. It is loud enough to be heard in the cab, but not over the radio. It ...
2
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1answer
556 views

2004 Buick LeSabre sputters in wet weather only when accelerating

My 2004 Buick LeSabre recently started behaving strangely. At first I thought I had filled up with some "bad gas." I used Heat to treat and after a week or so it seemingly started to work fine. Then ...
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3answers
326 views

Is my mechanic ripping me off?

My 2002 ford focus (built after may 23) died and the AAA and tow guy both said that it needs a new fuel pump. Anyway I went to the mechanic and he said it'll be 350 for the pump and 200 for labor. I ...
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3answers
4k views

Squeaking Noise when Cold Start. Suspect something wrong with belts, Also engine missing when sudden acceleration desired from Total Stop

From the past few weeks whenever I crank my car there is a squeaking noise which may continue for about 30-60 sec or even longer (This is intermittent sometimes it doesn't really happen). The engine ...
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1answer
59 views

Is an exhaust mute bad for 2 stroke engines? [closed]

Will an exhaust baffle have any bad effects on a 2 stroke engine if it's used all of the time?
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1answer
96 views

How much force is needed to push a piston down? [closed]

Combustion from fuel and air is used to push a piston down. When they combustion it creates a lot of force, my question is how much force is needed to push the piston all the way down when the vehicle ...
2
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1answer
111 views

Subaru Legacy cam belt change

I have got a 2010 Subaru Legacy 2.5 GT and it has done 90,000 KMs now. What is the best time to change its cam/timing belt? Is it by 100,000 KMs or 100,000 Miles? Thanks!
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2answers
64 views

Can driving long distances cause motor mounts to crack?

I have two cracked motor mounts on my KIA Sadona. I am curious as to what may have caused this. I am wondering if driving longer distances could cause it to happen It is a 2004 Kia Sedona EX. I ...
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3answers
448 views

Steam out of exhaust after complete engine rebuild

I have completed a full engine rebuild, down to the bare block, of my Tacoma. Replaced all the gaskets, cleaned and lapped all the valves tight, tuned the valve lashes to spec, cleaned everything, ...
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2answers
378 views

Engine jerking and revving, multiple failed ignition coils

This problem started a month ago. My Aveo started revving and jerking when it was sitting at a light on my way home (2 blocks from my house) and the engine light came on. I drove it home. The next ...
2
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1answer
127 views

What does valve lapping compound actually do?

As I understand, valve lapping is done to ensure a seal between the valve and its seal ring at the end of the shaft. I am just curious how valve lapping compound facilitates that? Does it make a ...
2
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1answer
203 views

Installing an RPM meter

I need to install one in my car, as it doesn't have one, what modifications do I have to do? Edit: My car is: Suzuki swift 1996 But I would like the answer to be generic, as to what to look for if ...
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3answers
1k views

Manual engine has no power in third fourth and fifth gear when driving up an incline.

When my engine is in neutral it reaches red line with no problem. It also has power in first and second gear. The problem happens when i am driving up a long incline, I will be in third or fourth ...
2
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3answers
381 views

2004 Subaru XT under powered and smoking after oil change

Over the weekend I traveled home and back: about 140mi each way. About half way there the engine light came on, and, realizing it had been about 4500 miles since my last oil change, I added oil to the ...
2
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1answer
63 views

first “non-replaceable” parts to break

I'm currently modifying my '08 Subaru WRX with everything from suspension(Sways/Strut/Springs...) to Engine(Turbo/TMIC/Injectors...) and much much more...However I would like to get ahead of the game ...
2
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2answers
111 views

What is meant by Engine Life Factor(ELF). Should I consider it while buying a vehicle? If so why is it not widely quoted?

The term Engine life factor going by the name suggests that higher the value more is the life of the engine. If so why doesn't companies specify this as a part of their standard specifications?
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2answers
804 views

Weedeater doesn't run very well w/ muffler on

I know nothing about this kind of stuff. But, when I started my weedeater, and put it on no choke (or even half choke), and gave it full throttle, it slowly died unless I let up on the throttle. I ...
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2answers
2k views

Formula for calculating output power after putting a rpm reduction gear

I'm thinking of starting of converting an old car to an electric car. I have a question, but google won't answer me my very long not very well explained question. Take this scenario. I would take a ...
2
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1answer
951 views

Mazda 3 2004 Engine Revving when car not moving

I recently noticed when my car comes to a stop engine running and ac on the engine revs as if it wants to move forward. The rev isn't huge. When i am in traffic and holding down on the brakes, if i ...
2
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1answer
206 views

motorcycle oil for m50B25TU (BMW E34)?

I just bought an e34 from a friend and he said he uses liqui moly racing synth 10w-50 for the engine. My mechanic was quite surprised when I told him and said I shouldn't use that, instead use real ...
2
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2answers
2k views

Aftermarket start-stop system

I am looking for an aftermarket device that turn off the engine when the car is in rest and turn on the engine when the throttle is pushed. Which are the producer? Where i can find it on internet?
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2answers
920 views

is there any way to adjust my idle speed - 2003 Cadillac CTS

My 2003 CTS vibrates pretty bad at idle speed (around 600 RPMs) But If I rev up to 800 or so, it's totally smooth. The real problem is partially due to worn motor mounts, but I dont want to spend $...
2
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2answers
6k views

Car overheating problem

I have a 2002 Ford Focus. Whenever the car is idling the heat gauge goes up at an alarming rate and goes the farthest into the red that it can if left alone. Now if I rev the engine a little the ...
2
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4answers
84 views

Check engine lights came up after Air filter change?

Yesterday I changed air filters in my car (Nissan supper saloon N16 - model year 2000). After installation the check engine light came on when I started the engine and the engine seemed to be running ...
2
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1answer
57 views

Replace lifter without removing heads or engine in 2000 Mustang?

https://www.youtube.com/watch?v=F-9dFdGq-vI I don't see why it wouldn't work as long as I torque everything down correctly and put it back together correctly.
2
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1answer
55 views

No water flow in the radiator - 99 Cadillac STS

What's wrong when water doesn't flow from your radiator. I already put a water pump and a thermostat on putits still running hot. What could be the problem?
2
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1answer
101 views

What does my serpentine belt run?

My F-150 '04 has a 5.4L Triton. I believe this is a pretty accurate diagram of the serpentine belt. I want to have a better understanding of what's under then hood. I'm pretty familiar with the basics ...