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

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76 views

Hours of labor required for 2007 Altima 2.5 engine refresh/rebuild

The cost obviously depends on the mechanic's hourly rate, but I know that the manufacturers provide authorized dealers with a guide of how many hours each service / job should take. However I can't ...
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3answers
278 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 ...
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2answers
70 views

No radiator fluid in resevoir

Obviously you shouldn't drive with no coolant, because in most cases obviously your car will overheat, blow a head gasket and all that fun stuff. I drive a 4cyl 2.5L Ford Ranger. One time I realized ...
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1answer
245 views

How do the bore and stroke affect the characteristics of an engine?

How do the lengths of the bore and stroke affect the performance (power and torque), and general running characteristics (e.g. redline, noise etc) of a 4 cylinder engine? Note: When asking this ...
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1answer
830 views

How often to start/drive a vehicle to keep it healthy?

In order to keep a gasoline-powered vehicle healthy, how often does it need to be started or driven? Please specify if it actually needs to be driven, or if just starting it and letting it run is ...
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1answer
269 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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2answers
2k 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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1answer
202 views

Craftsman snowblower: sudden death

I have a Craftsman 9hp dual (eg electric) start snowblower. It is very similar (or the same) as the one in this manual. It has been running smoothly all winter - I can start it reliably with the ...
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1answer
2k views

Engine Heat Indicator effects

I'm curious about the head indicator on my car. After driving more than 5 minutes it levels out pretty much half way between the 60 and 120 degree mark. My first question is: is the mid point at 90 ...
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1answer
626 views

Engine sputtering, not accelerating. Left for 20 mins and is now fine?

The car is a Mk1 Golf (1993, 1.8lt, mechanical injection). I was driving up a medium incline and suddenly my car starting sputtering and I lost acceleration. I pulled over and started the engine ...
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3answers
808 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 ...
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2answers
8k views

Gas pedal not responding

It just doesn't work, as if I weren't even pressing it and it happens regardless of the speed. I have to turn the engine off and on again and it'll work for another 3 or even up to 20 minutes ...
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1answer
98 views

Which operations are done when key is turned to On position?

I would like to know which operations or functions does the car do when I turn the key to On position (the key position before starting the engine) in gas engine and in diesel engine. For example, in ...
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2answers
1k views

Going more than recommended Speed in Break-in Period

I have a new Yamaha motorbike. Seller told me not to ride speed more than 50 Kmph for first 1000KM but I rode it 60 for 10 - 15 minutes due to some reason. How does it affect to my Motorbike ?.
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2answers
164 views

Where can I buy the 2005 Mazda 3s 2.3L oxygen sensor plug?

I bought an oxygen sensor with the wrong plug. I wonder were could I buy a plug like the one on my car in order to connect the oxygen sensor properly? This is an image of the plug on my car. Does ...
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2answers
737 views

Advice needed - My car has burn mark on hood and seems to be leaking oil

I have a 4 year old, well loved Honda civic with only about 25K. It has been serviced nearly every 6 months. I just took it for a service a few weeks ago and today I noticed that it seemed to be ...
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2answers
1k views

Cold engine works on three out of four cylinders

When my Honda CBR900’s engine is cold, it works only on three cylinders. When the engine begins to warm, all goes fine and all the cylinders begin to work. What can cause this?
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1answer
80 views

What are those big plates on both sides of the steam engine?

I would like to know what are those two big plates on both sides of this engine:
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1answer
305 views

Power Inverters as Emergency Generators?

After being hit by Hurricane Irene last week, I happened to loose power for literally one week so rather than rely completely on batteries and being a nomad, I used my Cobra 400 watt power inverter ...
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2answers
4k views

2006 Chevy Cobalt front end (strut mount?) noise

I have a 2006 Chevy Cobalt and since I bought the thing, the front suspension makes this horrible clunking noise every time I go over a bump. I don't know how to describe the noise other than it only ...
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1answer
614 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 ...
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2answers
2k views

2000 Nissan Maxima Service engine light

The dealer diagnosed it and says it got tripped by catalytic converter and rear oxygen sensor. The total estimate was around $2000. The blue book value on his car is around that amount. Is there a way ...
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1answer
65 views

Over heating of my 05 Honda Civic

I first purchased my Civic in Jan of 2015. My first car had terrible over heating problems so I decided to get rid of it for my civic. Turns out, my Civic has the SAME problem. I decided to take it ...
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1answer
56 views

Engine Temperature from OBD data

Engine Coolant temperature is obtained from OBD. But there is no PID to get engine temperature. Obviously, they are related, rather proportional I guess. But can there be a case where my engine is ...
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1answer
100 views

Top speed of my Bajaj Pulsar 135 is decreased after changing Clutch plate

I would like to know if my clutch plate can be the reason that my top speed is now lower. Top speed of my bike is 115. I drove my bike after the clutch plate replacement and the top speed is now 90- ...
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2answers
88 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.
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3answers
151 views

After five years in garage diesel car wouldn't start, what should be done?

One of my friends left his car in the garage since five years back and he has lived abroad since then. He left it with a full tank(its a diesel), and it ran perfectly well back then. Now he's back and ...
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1answer
110 views

Shortblock vs Longblock

What is the difference between a shortblock and a longblock? Both terms are used to refer to the engine, but what's the difference between them?
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1answer
253 views

VW Golf 2001 Mk4 Diesel ASR Engine Problem

I've spent a crazy amount of money on my car lately and I still have the same problem. I've replaced the: Catalyst Converter Radiator Starter Motor EGR Valve Track Rod ends & Wheel Bearings ...
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1answer
117 views

Valve lapping and lubrication

I have recently taken all my valves out and cleaned them with a wire brush as well as the shafts in the cylinder heads. I am now getting ready to put them back in and have several questions: What ...
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2answers
161 views

2006 Pontiac g6 rough idle and intermittent spongy brake and starting issue

I have a 2006 Pontiac G6 with 160k on the 3.5 motor. Around 155k the brake pedal went hard and spongy. Also, about 1 in every 40-50 times I start it cold, the starter will turn without a successful ...
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1answer
2k 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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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 ...
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1answer
1k 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. ...
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1answer
471 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 ...
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4answers
3k views

RPM jumps up & back down at 40mph

My question is for a 2006 Dodge Magnum, 2.7 liter engine. Just over the past month or so, I noticed when I'm cruisung, just coming from a dead stop, when I'm at 40 mph my car kinda feels like it ...
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1answer
91 views

Jeep Grand Cherokee redlines after engine overhaul

I just replaced pistons, lifters, pushrods, and head on a 1999 Jeep Grand Cherokee. It started right up, but the RPM went to redline. I checked throttle body components, the linkages are OK, but the ...
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1answer
106 views

How are the engines of street cars different from trucks and performance cars?

Consider three cars. All three cars have different engines, but all engines are 3 lit. V6s. The engine in first car is made for great gas mileage. The engine in second car is made to be able to tow ...
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1answer
293 views

Different heads on Dodge Magnum 360

I'm working on a 98 Dodge Ram 2500 with a Magnum 360 V8 (roller cam shaft). It had a cracked head on one side, so I purchased a pair of remanned heads from an eBay retailer. These heads are the ...
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2answers
2k views

2002 Renault Clio V6 won't start - just turns over

So I'm round my old dears and park on her drive. She needs to move my car (a 2002 Renault Clio V6 3.0) off the drive to get her car out. She gets in, reverses it and stalls it. Starts up again and she ...
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1answer
719 views

2000 Grand AM GT engine and electric cut out randomly while driving

My Grand Am is cutting off randomly while driving. I have not been able to purposely reproduce the problem, which makes diagnosis difficult. I am looking for any advice in diagnostics, or parts to ...
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1answer
1k views

1994 Ford Escort won't start

I have a 1994 Ford Escort that was bought used 2 years ago. When we bought it, it would barely run, and we had to replace the engine head. As a result of that and other repairs, it has been losing ...
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2answers
1k views

Motorcycle 125cc question about PISTON condition and battery

Last year I bought a 125cc bike, Modenas brand, most likely unknown to you. It is a moped. http://www.modenas.com.my/v2motorcycle.asp?id=70 It can go as fast as 110 km/h enough for the city, ...
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1answer
66 views

Why does my car engine rev so fast when running uphill

I have a 2015 Civic EX (6000 miles). It's revving 2000/2500/3000RPM at 70/80/90MPH on flat ground. However, it's having 3000RPM at 60MPH when going uphill and EVERYONE was passing me by (Except for ...
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1answer
277 views

VW Passat B5 EPC Light on Dashboard

There is a yellow light on my dash that says 'EPC'. I have no idea what this could mean on my car as I haven't noticed any difference in the way it drives, nor are there any unusual sounds other than ...
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1answer
40 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 ...
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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 ...
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1answer
641 views

White smoke coming from hood in cold weather at a stop light? [2003 Ford Taurus SE, Vulcan Engine]

As winter approaches, I have been noticing that on some occasions in which it is relatively cold outside (20-30 degrees) ,and also early morning or night time when the temperature is low, that my car ...
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1answer
170 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 ...
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1answer
41 views

What Do I Use for a Thrust Plate After Double Roller Timing Chain Swap

History/Background of This Engine The Magnum 3.9 V6 was introduced in 1992. In 1997, a TSB was issued to fix excessive timing chain noise. The fix was to remove the cam thrust plate and chain oil ...