General internal combustion engine questions.

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

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 ...
5
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2answers
379 views

Why does diesel engine have redline much lower than petrol engine redline?

why do diesel cars redline at around 4500 rpm whereas petrol ones around 6500 -8000 rpm? Does this have something to do with the compression ratio?
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1answer
51 views

Consequences of leaking valve covers

I took my valve covers off on my 2007 Tacoma V6, while digging deeper to look into a possible head gasket issue, and noticed that one of them had a nut missing that went on an upright flange threaded ...
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1answer
38 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 ...
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1answer
44 views

Acceleration and engine issues

So I have a manual 02 Chevy Cavalier with 147000 miles 2.2L. I have been noticing that when I fully step on the gas I get zero acceleration. It gets even worse when I'm in either 4th or 5th gear after ...
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1answer
97 views

How much fuel does it take to start an engine?

I appreciate this is a question that can't be answered in facts and figures, so I'm after a general idea. I drive a 1986 Supra, which has a modest 2.8-litre engine. I often shut the engine off while ...
2
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1answer
54 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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1answer
54 views

Had major overheat issue but engine was rebuilt 3 months ago

I had my engine completely rebuilt three months ago (new gaskets, timing belt, water pump, etc.) and yesterday the engine completely overheated (temperature was at the mid-line, then 10 minutes later ...
2
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1answer
80 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 ...
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2answers
162 views

What are some problems faced when driving vehicles during heavy rain?

Please could somebody explain the problems we could face while we are driving during heavy rain or along flooded roads? What are examples of designs that mitigate the issues of driving in heavy rain? ...
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2answers
618 views

Do you need charged battery for car to Idle

I am planning to acquire a 2001 Mitsubishi lancer 1.5 the car runs perfect but the it has an almost flat battery, even the horn doesn't work unless driven around.(No starting Problem though weirdly) ...
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2answers
318 views

Why do we need to cool air after it leaves a turbocharger?

When we are using a turbocharger to compress the incoming air, the air gets hotter. Usually this hot air is cooled by using intercooler before it is passed to the engine. But what is the reason ...
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0answers
63 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 ...
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0answers
20 views

2003 Ford Escape

I have a 2003 ford Escape, and I am having to put 2-quarts of oil after every time after I fill my car up on the second fill up. I change my oil every 3000 miles, it doesn't leak oil, or smoke, why is ...
2
votes
1answer
51 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 ...
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2answers
99 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 ...
2
votes
2answers
95 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 ...
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1answer
68 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 ...
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2answers
74 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
16 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
982 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
27 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 ...
12
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1answer
124 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 ...
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1answer
34 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. ...
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3answers
61 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 ...
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4answers
555 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 ...
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3answers
134 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?
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1answer
45 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. ...
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2answers
55 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 ...
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2answers
63 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 ...
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1answer
50 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 ...
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vote
3answers
94 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 ...
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1answer
42 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. ...
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3answers
107 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

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 ...
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1answer
62 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
178 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 ...
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1answer
20 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 ...
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2answers
182 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 ...
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0answers
30 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 ...
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2answers
278 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
21 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 ...
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0answers
27 views

2007 Suzuki Forenza motor

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 ...
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0answers
15 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 ...
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2answers
34 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 ...
2
votes
1answer
61 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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1answer
78 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?
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2answers
190 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 ...
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26 views

2002 Ford Ranger V6 sputter in 3rd & 4th gear

My Ranger has been running fine and now all of a sudden it sputters in 3rd and 4th gear. Anyone have an idea what causes this and what couple of things I can should look at first??
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1answer
89 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. ...