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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3answers
423 views

Engine on BMW G650GS 2011 does not start when it's hot

I have a rather strange problem with my BMW G650GS. In the morning, when the engine is cold, it starts fine with a single crank. There is no problem with riding, the engine works fine and never ...
2
votes
1answer
145 views

Engine sound rumbles/grumble noise 800-1300 RPM

A 2000 Toyota Celica GTS 225k miles engine makes a mild rumbling/grumbling rough sound when accelerating slowly from a stop in drive or reverse only in the 800-1300 RPM band. Does not occur when in ...
1
vote
2answers
161 views

Can someone identify this part of the engine on a TVS Apache

I tried looking up everywhere, and this is unique to this bike. Can someone identify the below component. Looks like a pipe connecting the engine with starter motor. Close up of the engine , both ...
3
votes
2answers
340 views

What is Variable Valve Timing technology?

Recently when I visited a car showroom the salesman pitched the car by saying it has VVT technology which is superior compared to other cars. I researched and found out that it alters the valve ...
5
votes
1answer
464 views

Importance of engine compression ratio

Please explain the importance of Engine Compression Ratio. In Text books I could find the following importances Engine Cold starting Characteristics Torque Generated Fuel Consumption Noise ...
3
votes
2answers
262 views

Why is Diesel Engine called as Quality Controlled and Petrol called as Quantity Control

Why is Diesel Engine called as Quality Controlled and Petrol called as Quantity Control. As far as I understand, In Diesel Engine the right amount of Diesel for the right amount of Compressed air ...
3
votes
1answer
20 views

How does cylinder leakage tester kit work?

I was browsing Amazon in search for a combustion leak detector (AKA "block tester") and I stumbled upon a cylinder leakage tester kit, which is supposed to do similar things? But I am not quite sure ...
3
votes
2answers
6k views

What exactly is Honda's i-VTEC technology

I see that almost all of Honda's cars have an "i-VTEC" logo at the back. I googled it and came to know that it has something to do with different cam profiles. Can someone explain? A diagram or ...
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0answers
83 views

Mitsubishi Galant over heating with battery light and brake light on

I have a 2000 Mitsubishi Galant ES 2.4 cylinder engine. I parked my car after leaving the laundry mart and I got in to pick up my children and it would crank but won't start. So we changed the spark ...
15
votes
1answer
346 views

What is the difference between a 180° V4 and a true boxer motor?

Reading this thread which talks about V4 motors, I am wondering what exactly is the difference between a 180° V4 motor you'd find in a Subaru and a true boxer (or horizontally opposed) flat 4 ...
4
votes
1answer
43 views

Are there varying degrees of engine misfire?

My fault codes indicate engine misfires on 2 (of 6) cylinders but I don't hear or feel any problems at all in the engine or exhaust. When I've observed engine misfires before, it was pretty obvious. ...
2
votes
3answers
98 views

Can you help me identify this pipe connected to the engine?

I'm confused about the pipe highlighted in blue in the picture below, can you tell me what's its role ? is it used for air ? or to pass the fuel from the injector ? I may sound talking nonsense since ...
8
votes
4answers
2k views

Why did V4 engines never take off?

I read that Ford Taunus (not to be confused with Taurus, it was a small model for German market) used to be made with a V4 engine but that's about it. How come V4 never became more used in modern ...
2
votes
3answers
809 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?
0
votes
1answer
56 views

Last year my timing chain had broken

I have a 2003 Pontiac Sunfire A tooth broke on a sprocket and my timing chain broke. I was told I have a bent valve and would need a new cylinder head. It's has been sitting for exactly a year. ...
5
votes
2answers
148 views

replacing distributor— spline doesn't align

I'm working on my 63 impala (283 motor) and the previous owner had put a beat up Delco HEI distributor on the car, but it's so large that you can't really time it correctly-- the cap hits the firewall ...
3
votes
2answers
92 views

Loose wires in 1993 5.0 V8 F150 Engine

I have acquired this very used truck. It seemed to be able to run (albeit by burning transmission and coolant, but that's a different thread) but I wanted to ask if anyone could ID these wires? I ...
1
vote
1answer
82 views

BMW e46 problems after Lysol in air intake

I was spraying Lysol into the cabin air intake (not the engine intake) right under windshield wipers while running the fans, and after doing this for several minutes (fans on the whole time, Lysol ...
2
votes
3answers
680 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 ...
1
vote
1answer
75 views

Duke 390 Tyre rotation problem

I have observed that my ktm duke 390's back wheel is difficult to rotate even while its in neutral. If i'm riding the bike, if i put it in neutral, the bike slows down pretty quick than it used to be. ...
2
votes
3answers
393 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 ...
2
votes
3answers
368 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 ...
1
vote
1answer
177 views

Heavy Towing 2007 Chevy Avalanche 5.3L [closed]

I'm going to be doing a bit of heavy towing with my truck. Up to and sometimes over its rated weights (approx 7000lbs). What can I do to add the necessary power and transmission performance that I'm ...
2
votes
1answer
786 views

Should we wait a few seconds before starting the engine?

My OCDed cousin's told me when he enter his car, he put the key to ignition then count to 3 and start the engine. The main raison of him doing that is to give enought time to fluids (I'm not sure ...
0
votes
1answer
23 views

No power situation - 1990 Mercury Couger

The engine won't turn over and there is no radio or power windows. What is the connection with these three things all at once? I replaced the coil and starter. Checked fuses, relays, etc. It ...
4
votes
2answers
3k 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 ...
2
votes
1answer
80 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 ...
5
votes
2answers
290 views

Ditch water in radiator

I lost a coolant hose going down the road and all my antifreeze was gone. I found a puddle along the road and filled my radiator back up after I fixed the hose. Will this cause electrolysis in my ...
3
votes
1answer
30 views

Dodge Caravan 2000 sudden rev

My Dodge Caravan 2000 suddenly revs at high speeds. When travelling at 70km/h, the rpm would suddenly go from 1.5k to 2-2.5k instantly and jerks afterward. I'm not really a car guy so if you guys ...
2
votes
0answers
47 views

2007 Suzuki Forenza motor [closed]

I took my 2007 Suzuki Forenza in for regular maintenance to replace timing belt, nothing was wrong with it. I was just following suggested time to change. They changed it and the water pump, but put ...
0
votes
0answers
17 views

Fuel Efficiency vs Engine capacity [duplicate]

How come there are cars with 1500cc engine producing with better fuel efficiency than a 800cc motorcycle with roughly the same amount of bhp? For example a Suzuki Splash with 1200cc and 87bhp returns ...
1
vote
2answers
48 views

New breaker points not working

I'm trying to replace the breaker point on my 1980 Oldsmobile, trying to fix some spurious misfires and engine stalls. The car was converted to gasoline in the early nineties or late eighties, engine ...
5
votes
1answer
228 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
votes
1answer
162 views

Turbo Charging Suzuki Splash/Ritz

Can I turbo charge my Suzuki Splash/Ritz? Its a 1.2 liter petrol engine with 85HP. What types of engines can be turbo-charged. If it's possible, how would I do it?
3
votes
3answers
1k views

“tick-tick” sound in Enfield Clasic Motorcycle

BIKE ENFIELD CLASSIC 350 2013 Model ODOMETER: 14000 One and half year old Oil changed one and half month before general servicing. There is a particular sound from the engine while riding ...
1
vote
1answer
612 views

Risks of “excess and lack” of Engine oil

I ride a Honda Stunner CBF 125 CC daily for approx 30 kms, with an average speed of 45 km/hr. I noticed that my motorcycle has been consuming too much engine oil like it not used to few years ago. ...
0
votes
1answer
89 views

Switching off the AC before turning off the engine to increase longevity - urban myth? [duplicate]

I was riding with a friend and he insisted that it's better for me to switch off the AC before turning off the engine because when you turn on the car the AC won't get switched on with it and the ...
1
vote
1answer
34 views

2004 Chevy Silverado 4.8 check engine light on

Codes are: P0101 mass air flow circuit failure. P01071 bank 1 lean and P0174 bank 2 lean. Did a replacement of the intake manifold gaskets and a fuel injector de-carbonization service. After 40 ...
3
votes
1answer
400 views

Opel Corsa D engine issue?

I have a 2011 1.4 petrol Corsa D. When accelerating the car lurches. This doesn't happen all the time and is seemingly random. It may happen when I accelerate from 60 on the motorway back to 70 or 30 ...
5
votes
1answer
187 views

Yamaha FZS Ver- 2.0 Engine Seizure

I gave my bike (Yamaha FZS ver 2.0) to an authorized service center for it's first-time service. The mechanic didn't fit the drainbolt (which is under the engine) properly causing the engine oil to ...
4
votes
2answers
344 views

I accidentally kept my vehicle Choke ON while riding?

I have Honda Dio 2015 Model. Yesterday, I kept the Choke ON while riding. I wanted to know what are the damages it probably causes to the engine? Does it have any after effects on the engine?
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vote
0answers
51 views

Would “one cylinder's out” semantics include a head gasket? [closed]

I sold a car on craigslist with part of the title being "Runs, but one cylinder's out". I had taken the car to Firestone to diagnose why one cylinder wasn't firing right and they said it has 0% ...
3
votes
3answers
351 views

2003 F150 5.4L V8 Long Term Fuel Trim High Bank 2

I am currently chasing a lean condition in my Ford F150. My fuel trims were reading high on one bank (bank 2) and I am curious when I find the vacuum leak or whatever is causing the high readings, how ...
4
votes
1answer
87 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 ...
6
votes
1answer
124 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 ...
4
votes
1answer
532 views

Oil pressure decresases when I step on the gas

I have a 1982 Mercedes W123 with a 2L gas engine. I have noticed some weirdness with the oil pressure and want to know if this is an indication of a problem. Let's say I am driving at 60km/h and the ...
4
votes
2answers
314 views

Semi synthetic oil engine break-in

I've finished rebuilding the engine of my motorcycle (4 stroke 650cc single-cylinder). For now it runned only once varying between 1000 and 2000 RPM for 5 minutes with a couple of short bursts after ...
5
votes
1answer
137 views

What is the Carter Gas Filter for?

I'm confused with this, are there any combustion gasses in the carter and why do they need to be filtered? What is the Carter gas filter, where is it located and what is its use? Is there a way to ...
1
vote
2answers
102 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 ...
1
vote
2answers
3k views

Engine hesitates and sometimes stalls after filling gas tank

On my car (2005 Dodge Grand Caravan) when I fill up my gas tank, almost immediately afterwards pulling out of the gas station my van sputters, misses, hesitates, call it what you will. The past couple ...