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

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5
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2answers
142 views

Toyota Avensis '99 - engine performance problem

My girlfriend and I drive an old Toyota Avensis that was produced in 2000. Its engine is Toyota's 3S-FE. Let me spare you my theories and tell you what symptoms arise: When the engine is cold, it ...
2
votes
1answer
161 views

ISUZU CUBIC mixing oil in coolant

ISUZU CUBIC - CITIBUS ENGINE - 6hh1, 8300cc, 6 Cylinder, No Turbo I have this Isuzu with the above description. It is mixing oil and water coolant. I did not find water in the crankcase but found oil ...
3
votes
1answer
52 views

Access to Piaggio MP3 engine

Some help needed here. I ride a Piaggio 250 mp3 scooter. After a few weeks of stalling at traffic lights, it finally refused to start engine at all. I've tried the garage but they didn't repair it ...
1
vote
1answer
330 views

Error Message from OBD-II (7F 01 11)

I have been extracting OBD-II DATA from UART board (ELM327) on my TOYOTA INNOVA. It responded correctly few weeks before and gave all supported sensor values. But now, for every response, ECU responds ...
3
votes
3answers
898 views

Derbi Senda 50cc - Low Compression, will not run properly

I have a Derbi Senda SM 50 2005 plate. It has a good spark, however, it's not reading any compression. It's had a new top end and gaskets! What could be wrong? Sometimes it starts when you bump ...
5
votes
1answer
135 views

oil level on dipstick

Which way should this dipstick be placed? When placed in with the bend facing towards the engine it gives a different reading from when placed facing the opposite way. There is not a great deal of ...
6
votes
1answer
989 views

Car leaks oil when driving, Oil from exhaust pipe

Car leaks oil when driving not while parked. The bottom of the vehicle is covered with oil and there's white smoke coming from tail pipe when driving. It sat and there no oil puddle in garage but ...
1
vote
0answers
225 views

2 cycle engine has spark and new carb won't start [closed]

I have a 49cc 2cycle engine that I replaced the carb on. It has fresh gas and appears to have a spark. I can't get it to fire even if I put some starter fluid in the air intake. It seems to have ...
3
votes
1answer
509 views

Bottom piece of spark plug broke off in motorcycle engine

I was riding my 2005 RM125 dirt bike the other day when it bogged down all of a sudden. I noticed the spark plug had backed out of the head, thus causing the stall. I pulled the spark plug all the way ...
8
votes
1answer
585 views

Two-stroke dirt bike piston running into spark plug

Recently, I submitted a post on here regarding a broken ground electrode on the spark plug of my 2005 Suzuki RM125: Bottom piece of spark plug broke off in motorcycle engine Well, I found out what ...
4
votes
2answers
2k views

Blue smoke on engine start

I got my 2002 Camry when it had 86K and now it has 97K on it. In the morning when I start the engine, I see blue-ish smoke coming out of the exhaust for a while. I don't know if I had it before, but ...
3
votes
2answers
91 views

What would be better for an engine driving at 60mph or 70mph? I wish to get the most miles out of my engine?

At 60mph my engine revs at 2800RPM and at 70 it's 3200RPM. My qustion is which condition would give the most miles from my engine.
4
votes
1answer
272 views

What are the effects of excessive oil changes on an oil pump? (read description)

I would like to know what the effects on an oil pump are when oil is changed. Obviously after changing the oil filter the engine will run dry without oil pressure for the first few seconds while oil ...
5
votes
2answers
813 views

What is the “dollar bill” test?

One of the questions recently made reference to an exhaust failing the "dollar bill" test. How does one perform it and what does it tell you?
3
votes
1answer
41 views

74 Corvette with slight pop in exhaust

I've got a (new to me) 1974 Corvette with the 5.7 / GM 350 . Dual exhaust. Driver's side exhaust sounds perfect. Passenger's side exhaust has a subtle pop/rattle to it and does not pass the "dollar ...
5
votes
1answer
150 views

Shop replaced engine, blew about six weeks later

A local repair shop recently replaced the engine in my 06 Pontiac Solstice. They obtained a used engine from LKQ. I'm not sure how many miles the replacement engine had (unfortunately). Wednesday ...
1
vote
1answer
113 views

Ford ikon 1.8 nxt diesel - Starting problem [closed]

Ford ikon 1.8 nxt diesel. It has coverd 130000 kms. Now in winter, there is starting trouble. Mostly it takes 30 to 35 secs. Long self. I have checked its heater , hetaer timer ,fuel leakage , battery ...
2
votes
1answer
127 views

Coolant light is on even after topping off

2000 Pontiac Grand Prix Gte - My low coolant light came on so I parked let it cool down went to auto store n got the Dexcool antifreeze and filled it past the hot marker. Drove it on the interstate ...
3
votes
1answer
223 views

Replace 2003 Highlander engine w/Avalon or Camry?

I have a 2003 Toyota Highlander, 3.0L V6, FWD, mfr 12/02, with a blown engine. My local salvage yard sold me a 2002 Avalon engine that "is exactly the same except the intake manifold". I took the ...
6
votes
2answers
7k views

What happens to a car engine when giving max throttle while not in gear

I was driving (well standing still actually) during rush hour, and I was suddenly wondering what would happen to a car engine when I would push the accelerator pedal all the way down while the engine ...
16
votes
1answer
3k views

What is happening when a two-stroke engine is said to be “four-stroking”?

Many years ago, I was involved in a hobby of building and flying model aircraft. The aircraft used alcohol-fueled 2-stroke engines with glow plug ignitions. When these engines ran rich (and always at ...
7
votes
4answers
727 views

2015 Honda Fit iVTEC - Shifted into 2nd Gear at Highway Speeds

I was just driving on the highway and went to pass someone uphill, so I went to put it into 4th gear (from 5th or 6th). I somehow made the mistake of putting it into 2nd and the engine screamed and ...
4
votes
1answer
101 views

Honda XR650l first ride after winterization

Before winter I had the oil changed, filled the gas tank and added the recommended amount of Sta-bil fuel stabilizer. Then rode around for about ten minutes then switched the petcock to off and ran ...
1
vote
2answers
119 views

2005 Honda Civic - Oveheating [closed]

So my car has been overheating for over 1 year. It overheated during summer or when I went 80mph only. I recently saved up enough money to get the car fixed. I brought it to my mechanic and informed ...
3
votes
1answer
47 views

What would go into a tranny swap on a modern vehicle

I have a 1999 Isuzu trooper and I have been toying with the idea of doing an engine and transmission swap on it. If all goes well with the engine I plan on getting I would like to replace the ...
7
votes
4answers
185 views

2002 Ford F350 Superduty 7.3L Turbo diesel using a quart of oil every 43 miles

This Diesel engine has been rebuilt and it didn't use any oil till the HPOP went out. I replaced the oil pump and then I noticed my turbo when going up a hill and the Turbo would sound like a sneeze ...
4
votes
3answers
151 views

What non-driver, non-terrain factors can affect vehicle miles per gallon?

I've been tracking the mileage on my 2015 VW Golf (a non-intercooled turbo, but not diesel, thank goodness). Of course, my driving habits and highway/city balance influence things greatly, but beyond ...
2
votes
1answer
112 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!
5
votes
1answer
162 views

How to reach bolt at the rear of BMW M41 Engine?

I can't manage to properly reach the top right screw (zoom picture of it on the second picture). How could I do that ? (the tool I have is too long to be able to go on the rear, there is nearly no ...
1
vote
2answers
508 views

96 Toyota Camry won't stay started [closed]

My 96 Camry starts first time every time then stalls after 10-20 seconds? Last year it ran fine but rarely would stall @ running speed. I had to set for 2-3min before it would start then it ran fine....
6
votes
3answers
341 views

What is an inverted triangle piston skirt?

The recently launched Suzuki GSXR150 boasts an inverted triangle piston skirt. From what I have been told, it seems to be MotoGP technology which has been stripped down to suit a 150cc bike. Kindly ...
4
votes
0answers
100 views

Engine not functioning properly at idle (cold or hot), during driving, slow acceleration, does not increase speed

I have a VW POLO (6N2) - 1.4 (60Hk), from February 2000. After the car was standing still for 2 days in a rural area close to a stream (damp environment), the car had issues with being idling. Even ...
2
votes
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 ...
9
votes
2answers
822 views

How would I go about becoming a mechanic?

So, for the most part, I know how an engine works. I understand how a car converts liquid fuel to physical power, and most of the concepts behind the operation of a vehicle. Recently, i've begun to ...
1
vote
2answers
913 views

Honda Odyssey 2003 makes squeaking noises on cold start

Something squeaks when I start the engine after the car was sitting in garage for the night. Squeaking goes away after 2-3 minutes. Here is a video Car has following replaced a month ago: harmonic ...
7
votes
5answers
75k views

Cold start squeaking noise in engine

I just purchased a used 2010 Corolla 3 days ago. I've only now noticed that when I start the car, there is a squeaking sound coming from the engine. It lasts no more than a second. Sounds like it ...
2
votes
1answer
49 views

Detect engine stumble or hesitation

I want to know if I can detect my engine is having hesitation/stumble problem from an OBD. I mean not from any fault codes, but from the parameters obtained from the OBD. e.g. calculate the obtained ...
2
votes
1answer
38 views

Engine surges when depress accelerator past a certain point

I have a 2003 manual Nissan Almera S petrol 1.5L with only 75,000 miles on the clock. Today the engine has started to surge. If I depress the accelerator pedal more than approx. ½ inch - 1 inch, the ...
2
votes
1answer
21 views

2001 Rover 25 Overheating

My Rover 25 started overheating a couple of days ago. It has had the head gasket replaced already some years ago, and I suspect this might be the beginning of another faiuler, so I'm going to take it ...
2
votes
1answer
110 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 ...
3
votes
2answers
122 views

What is the theory behind rpm and torque? [duplicate]

*I am sorry if this seems too basic for you guys. From what I understood is that fuel and air enters the cylinder, combustion occurs, Piston expands generating work and torque. The Rpm should match ...
3
votes
0answers
60 views

What car would I need to buy (secondhand) to replace my currently wrecked BMW 318i motor? [closed]

Okay so I currently have a BMW e46 (318i) and i took it to my mechanic, motors wrecked etc etc. He suggested a cheaper alternative to fixing the motor would be to buy a whole new car (max 5k, second ...
10
votes
6answers
19k views

What is the purpose of plastic engine covers?

I have a 2010 Toyota Corolla. What is the purpose of the large plastic cover that stretches over my valve cover? Does it have a particular function? Are they just for looks? Or are they designed by ...
4
votes
1answer
74 views

how do I crank a remanufactured engine for the first time?

Just installed my first long block manufactured engine (360 in a 1987 Jeep j20). Got gas, spark and air. Engine turns over but will not hit to fire. Does a manufactured engine come with timing preset? ...
6
votes
5answers
15k views

How does cold, dry weather affect horsepower?

It's now properly winter over here in Australia, and the butt dyno is very favourable of the cold, dry air. It's like a free cold air intake for everyone, right?? I can think of two scientific ...
1
vote
2answers
168 views

Should I give a little throttle after my car starts?

When I start up my 2003 petrol car, as soon as it fires I often give it a dab of the throttle, so the battery recovers. It's fuel injected, no carburetor or anything. I've been told this is pointless....
4
votes
3answers
1k views

Car will not start Sometimes?

Hey i just wanted to ask about my girlfriends car she has been having problems with for over a year.. we had it checked but they always say nothing is wrong (usually because the car starts when they ...
3
votes
3answers
354 views

Should fuel pump noise be changing according to electrical load and RPM?

One thing that bugs me about my car is that the fuel pump noise is fairly inconsistent. Turning on the lights, aircon, defroster, etc. lowers the fuel pump speed and gives a lower pitched noise. It ...
4
votes
1answer
89 views

Banging sounds coming in front of my car

I'm having a banging sounds coming from the front of my car. Usually they appear after 5-10 meters when I'm driving. It's like one small knock and then around 5-6 more knocks and then they stop until ...
4
votes
0answers
44 views

ECM replacement - starter runs during reprogramming?

(mid-90's Buick) Someone I know had an ECM injector drive output go bad. He got a replacement ECM online, but had to take it to a shop (not a dealer) to get it 'initialized' (If that's the right word....