General internal combustion engine questions.

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2answers
2k 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 ...
2
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2answers
357 views

Does the a gasoline or diesel engine appy fuel at high speeds when not pressing the pedal and more

Let say I directly connect a small engine to my bicycle, and that I'm superman who can overcome any force. Then I start cycling (using my legs...) - the engine starts to rotate, even though I haven't ...
2
votes
1answer
396 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 ...
2
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3answers
305 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 ...
2
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3answers
3k 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 ...
2
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3answers
2k views

Why would welsh plugs start leaking?

I have a VW Citi Golf, and the Welsh 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 ...
2
votes
1answer
72 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
235 views

Does using the entire rev range of a car damage it?

On my standard 2000 1.2 Opel Agila, I often have to get to about 5000RPM to join a fast road on a steep (1 in 10) hill, as it is gutless on hills. I have to do this almost every day, and I have ...
2
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1answer
41 views

Cylinder Leak-down vs Compression Test

I understand that both cylinder leak down and compression tests are used to test for cylinder head, cracks, warps, and gasket leaks. I understand the difference between how each works: compression ...
2
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1answer
55 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 ...
2
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3answers
136 views

Why are most engines made with even numbers of cylinders?

Why are most engines made with even numbers of cylinders? Are odd numbers of cylinders somehow less efficient than even ones?
2
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1answer
53 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
63 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?
2
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2answers
242 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 ...
2
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2answers
108 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
1k 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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2answers
89 views

Can a variable engine exist?

I have really no knowledge about mechanics but such a curious guy. Excuse my Ignorance. Does a variable engine exist? Like as the vehicle slows down the engine will slow down and when the vehicle ...
2
votes
1answer
167 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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3answers
2k views

Possible causes of this Honda Civic K20 engine whine/hiss?

I own a 2008 Euro Civic Type-R which has almost the same engine as the US Civic Si (K20Z3 vs K20Z4). Since a bit of time I have a really annoying high pitched noise coming from the engine. It's ...
2
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2answers
630 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
4k 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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2answers
10k views

Burning Smell and Faint White Smoke

I have a 1999 Audi A4. Recently there is a burning smell when driving that is noticeable when stopped after driving. At night I noticed a faint white smoke blowing out of the front in the headlights. ...
2
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2answers
90 views

Pontiac g6 runs lean; throwing codes

My 2006 g6 v6 3.5 is showing codes p0171, p0174, p0705 and u0073 171 and 174 show that the engine is running lean. Is this a serious issue? 0705 shows the trans range sensor a circuit 0073 says the ...
2
votes
1answer
63 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 ...
2
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2answers
91 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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2answers
659 views

Peugeot 207 “Cam Cover” Letting in Air

I'm getting codes P2196 (A/F sensor stuck rich) and P2270 (O2 sensor stuck lean) and symptoms of hesitancy whilst idling (original question). Took it into the garage and they've identified that the ...
2
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1answer
564 views

Motorcycle heats up within minutes of driving in the traffic

Ice cold engine of my KTM Duke 200 heats up and shoots the highest temperature and the gauge reaches the extreme within like 15-30 minutes of driving it in traffic. And the engine stops and doesn't ...
2
votes
1answer
719 views

2003 Honda Civic 1.7 vTec - White Smoke from the tailpipe

I have a Honda Civic 2003 gx 1.7 liter vTec stick shift 4 cylinder. Just today I had to put oil in my car. Drove for about 5 minutes got to a light and when I shifted into first gear a white cloud of ...
2
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1answer
7k views

How much does displacement affect performance?

I'm interested in learning more about the steps that can be taken to increase the performance of an engine. I'm curious how much displacement affects performance. For example, compare the following ...
2
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1answer
225 views

High pitched noise from engine unless brakes engaged

I'm driving a manual 96 Toytota T100, and recently the engine started making a high pitched, almost inaudible whine. Some things I've loosely figured out: It always stops when the brakes are ...
2
votes
1answer
661 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
124 views

CVT on 6 cylinder cars

The 2013 Honda Accord has both 4 cylinder and 6 cylinder cars, however, only the 4 cylinder cars have a continuously variable transmission (CVT). I was wondering... is there any particular reason for ...
2
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1answer
132 views

Does a water leaking make the engine heat faster?

I have a Range Rover classic 1993 which is heating very fast even if I just drive for 10 min, the heat is not rising too much but I used to drive this Range Rover before and especially in winter ...
2
votes
2answers
2k views

Cleaning fuel injectors with a pressurized can?

I've been experiencing rough idling on my 2003 Mitsubishi Galant for the last year or so. It has 182,000 miles on it. About every 6 months now I use seafoam cleaner in the tank and that clears it up ...
2
votes
1answer
3k views

Hard Start in cold weather

We have a Ford Escape (2005 V6) with approximately 125k on it. I have done most of the maintenance on it myself since we bought it at 90k and it has overall been a great vehicle. The past two ...
2
votes
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?
2
votes
1answer
736 views

Lifter tick—safe to ignore short-term? What to do about it?

I have a 2002 Toyota Camry V6 (1MZ-FE) with about 129,000 miles on it. Recently, I noticed a ticking that seems to be loudest at the end of the front valve cover, on the opposite side of the timing ...
2
votes
1answer
581 views

2002 Ford Focus CEL blinked for a minute and then turned off

I have a 2002 Ford Focus with around 100k miles on it. I just brought it back from the mechanic for a fuel pump replacement. As this question shows. Anyway I was driving around going uphill when I ...
2
votes
1answer
112 views

How do the cycles of the engine get converted into cycles of the wheels?

Is it the transmission that converts the high rpm of the engine into the lower rpm of the wheels rotation? Let's say that an engine was running at 500 rpm (this refers to the rpm of the crankshaft, ...
2
votes
1answer
523 views

Comparing v-twin with straight-four engines

This isn't really on-topic for "motor vehicle repair", but I figure it's kinda close. A few months ago, I bought a 1983 Honda Nighthawk 550, which has a straight-four engine. A friend of mine was ...
2
votes
1answer
526 views

Passat - Oil warning light on engine rev. Expensive fix?

looking to buy my first car, which is a daunting task for someone with little money and even less knowledge of motors. Seen this one on ebay, which ticks all my boxes but is cheap because: When ...
2
votes
1answer
17 views

1999 Ford Expedition 5.4 sparkplug/ignition coil replacement

I got a service engine soon light and and scanned it. It came out to be cylinder 5 misfire. My truck shook a little on idle more when I gassed it. I talked to some mechanics and told me it would be ...
2
votes
1answer
50 views

What causes too much fuel for my Briggs and Stratton engine?

I recently bought a generator that uses a Briggs and Stratton 17hp Vanguard engine. Before purchasing the generator, it had not ran in several years. The fuel was stale and the oil needed to be ...
2
votes
2answers
34 views

ECU Diagnostic Port cut off and Check Engine Light disabled

I bought a used 92 Integra ZXi recently. I had starting issues so I took it to a mechanic. He found that the check engine light is disabled and diagnostic port from the ECU has been cut off. A very ...
2
votes
1answer
83 views

What is Opel/Vauxhall's TwinPort Technology?

Some Opel Engines come with something called TwinPort Technology. I guess that this increases power, as the original Z12XE (1.2) engine has 55kW, and the TwinPort (Z12XEP) version engine has 59kW of ...
2
votes
1answer
158 views

E46 Check engine light on at high altitude

In my E46 BMW, the yellow check engine light always turns on when visiting Lake Tahoe (altitude ranging from 6000-8000 feet). It usually turns off if I've been there for a couple days. After many ...
2
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1answer
106 views

Dodge Ram SRT-10 Problem

My Dad owns a 2005 Ram SRT-10 Quad Cab. The problem is when my dad trys to go over 100 MPH it doesn't let him. And I know the Ram SRT-10 can go a lot faster than that. In fact the Ram SRT-10 can reach ...
2
votes
1answer
32 views

What uncommon tools are needed for a GMC Savanna 2500 engine replacement?

I have done simple repairs, such as the water pump, alternator, etc on vehicles. Having gone beyond simple maintenance (oil, brakes, spark plugs, etc) I have a collection of very common mechanics ...
2
votes
2answers
731 views

Mazda 323: Plugged in Coolant Temp Sensor - Now Car won't Start

I recently bought a Manual 97 Mazda Lantis 323 1.8L DOHC 16 Valve BP. I found the following wire unplugged on the drivers side of the engine, next to the water intake from the radiator: It plugs ...
2
votes
2answers
20k views

Rough Acceleration & ticking noise

Vehicle: 2000 Blazer 4WD Automatic 260,000+ miles (Runs perfectly if not for something going wrong every two weeks) Symptoms: Engine sounds rough when accelerating When accelerating there's a ...