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

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4
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0answers
40 views

Saying its running hot but full of coolant and not over heating

2005 Hyundai Elantra. Says its running hot but has coolant and so far hasn't over heated and also can't turn on heat in car because smoke pours from vents into the inside of car.
4
votes
0answers
88 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 ...
4
votes
0answers
42 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 ...
4
votes
0answers
26 views

Hiace 1996 ignition/motor problems

I have a 1996 Hiace. I was driving and it just died, nothing. Dash lights all work, but motor will not turn over, nothing from starter. It has dual fuel, and was wondering if it could be the AEB 552 ...
4
votes
0answers
144 views

My BMW X5 won't stay running

Hello I have a 2003 BMW X5. I just got the engine replace a couple days ago. I went to pick it up but because the shop was done installing the motor but now I have to deal with the other problems I ...
4
votes
0answers
202 views

Engine Running Fast in Park

Never had this issue before but I just started my vehicle and the tac automatically revved up to 1500 rpm when I cranked it. It didn't go back down while in park, it basically idled at about 500 rmp ...
4
votes
0answers
193 views

How to remove engine cooling fan from a W169 Mercedes A-Class

How do you remove engine cooling fan from A-Class Mercedes W169?
4
votes
0answers
91 views

2009 Kia Rio - Potential Misfiring?

I have a 2009 Kia Rio with ~75,000 miles. After I first start the car and accelerate away from where it was parked (especially if I accelerate hard), the car will repeatedly make a quick sound that ...
4
votes
0answers
194 views

High Idle and Engine Noise in Chrysler 300c Hemi

I recently bought a 300, it had 170000 miles on it. When I test drove it nothing felt wrong what so ever. Week later it started turning off by itself in the middle of the freeway or alleys. Got it ...
4
votes
0answers
337 views

Ford Fiesta Mk6 Diesel Engine Fault

Upon acceleration the following lights illuminate once the engine reaches 3000-4000 RPM: A message; "Engine Fault" appears on the dash screen. Once this happens, the engine will no longer rev ...
4
votes
0answers
50 views

96 Suburban intermittent falter/stall immediate restart

96 GMC K1500 Suburban. Falters/stalls. Intermittent. So far low speed/parking lot acceleration from stop. Also deceleration low speed as in coming to stop. Radio cuts in and out around the time of the ...
4
votes
0answers
74 views

Chevrolet Corsa doesn't accelerate until I restart the engine

It works fine for the first 10 km or so, then it'll suddenly stop accelerating, as if I weren't even pressing the pedal, and I have to restart the machine and it'd work again, for at least other ...
3
votes
5answers
14k views

What modifications need to be made to an engine to enable higher safe RPMs?

I first had this question while playing a racing game - it was a touring race with BMW 320i's, and I noticed that I could rev up to 8,500 RPM before shifting gears. Now my car (an older 320i), ...
3
votes
4answers
339 views

Hyper-miling and stress on engine oil

The other time I asked my mechanic, are my tires about needing to be changed? He said, naw, another 8000 miles. After driving 7000 miles, I asked another mechanic who again said, long way to go. ...
3
votes
2answers
131 views

Why are intake valves dirtier than exhaust?

I took my engine apart and one of the things I noticed, on both cylinder heads of my Tacoma V6, is that the intake valves (picture right) are significantly darker (or dirtier) than the exhaust ones ...
3
votes
3answers
157 views

do all quattros have shafts connecting front and rear axles

I have recently purchased a 2009 Audi A5 Quattro, and in looking underneath the car there does seem to be a place for a shaft to connect the front axle to the rear axle (which you would expect) but ...
3
votes
2answers
4k views

BMW E30 M20 oil warning light goes on on hot days but the motor sounds and performs fine

The car: BMW '90 E30 320i Cabrio with the six-cylinder M20 engine. The problem: the red engine oil warning light inside the instrument cluster (not the check control) lights up after some driving. ...
3
votes
2answers
156 views

What are the implications of driving through flood water when I have a high air intake?

My 2003 Opel Agila 1.2 Petrol, has a high air intake. Here is the approximate location of it: [ Here is the engine bay, showing the air intake on the left. Is the height of the bottom of the ...
3
votes
3answers
221 views

2004 powerstroke white smoke now no start

I have been trying to fix my truck for a while so long story. I need help bought a 2004 power stroke with 100k miles. It ran well for 15k miles then started having low power for first few minutes to ...
3
votes
1answer
66 views

What does BHP@rpm mean?

In my car's specs sheet I noticed: Power (BHP@rpm): 117@6600 What does BHP@rpm mean?
3
votes
2answers
569 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 ...
3
votes
2answers
419 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
2answers
117 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 ...
3
votes
11answers
16k views

What can I do to give my lawn mower more power?

I have a 21" Craftsman push lawn mower with a Briggs and Stratton 7 hp engine that is about 6 years old. I've got it cutting on the highest setting, and it still has issues cutting the grass without ...
3
votes
2answers
1k views

What to Look for When Buying a Rebuilt Engine

I'm looking at a 98 Mazda 323 1.8L with a rebuilt engine. Basically, a mechanic bought it cheap due to shot rings and rebuilt the engine to sell it at a profit. He said it's the fifth engine he's ...
3
votes
2answers
2k 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? ...
3
votes
1answer
1k 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 ...
3
votes
1answer
159 views

Are there any modern diesel engines the require electricity to continue running?

I was reading this question about an owner checking the alternator by disconnecting the battery, which is an easy way to validate on a gasoline engine. The single answer assumes that the OP is ...
3
votes
3answers
183 views

What kind of gasoline additives will help maintain the engine efficiency/life?

Aside from the traditional maintenance of oil changes, and keeping fluid levels correct - what else will help prolong the engine's life? I recall a few years back gasoline additives were the thing to ...
3
votes
1answer
43 views

Engine won't rev past 2500 in Park/Neutral

I am just through replacing the catalytic converters on an 06 Ford Expedition with about 151k miles on it. To break in new cats, you must run it at idle for about 5 minutes, then increase the engine ...
3
votes
2answers
79 views

fuel system problem

I have a 89 camaro I personally don't think it's a fuel pump issue and I recently changed the relay, but whenever I turn the key over sometimes I hear the fuel pump turn on sometimes I don't. Could it ...
3
votes
2answers
58 views

Why might you choose to change to using an aftermarket throttle body?

I have heard that some people might want to buy an aftermarket throttle body. Is the reason for this simply to replace a broken one or are there also other specific advantages (and disadvantages) to ...
3
votes
2answers
300 views

Who gets title if you sell a frame and an engine separately

I have a POS (Piece of S**t) salvage motorcycle I purchased cheap for a purpose which has now passed. I'm ready to get rid of it and there's a guy down the street that mentioned possibly wanting to ...
3
votes
2answers
127 views

How Much Liquid Can I Put In My Cylinders Safely?

I wanted to do a little bit of a "scientific" test to see how well a homebrew seafoam type mixture will dissolve carbon deposits on the cylinder crowns. I thought of simply taking the plugs out and ...
3
votes
3answers
590 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 ...
3
votes
2answers
2k views

Why does a car's engine vibrate at start, despite the circular geometry of its component's dynamics

If a well balanced system starts moving, it should not vibrate ! Or if it does, it should vibrate even more at high speeds ! But a car clearly vibrates hard during the startup, to then stabilize.
3
votes
1answer
210 views

2001 Audi A4 corroded part… What is it?

I noticed under my hood that a piece looks corroded through. My car hasn't given any warnings or check engine lights and no liquid is coming through. No one I ask knows what it is. Please help! ...
3
votes
3answers
961 views

Dying car, at random intervals

So my 1996 Jaguar XJR is just stopping at random. It happens when the car is doing low RPM, like when I am coming/stading at a stop light. Any ideas on where to start to troubleshoot this problem? ...
3
votes
2answers
402 views

How is the clanging sound produced in the engine?

Imagine riding your motor bike from plain ground to an uphill path, initially it climbs the road in top gear. Then gradually the bike begins to slow down and the sound from the 100cc petrol engine ...
3
votes
1answer
168 views

Should I care about valve order or are they interchangeable?

So I've just learned how to take valves down and I'm pretty fascinated by the whole mechanism. I got a C-clamp compressor and took two valves out just to try. Went smooth. A question: is it important ...
3
votes
1answer
196 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
2answers
179 views

Seized engine on 13 yo Infiniti, out to pasture for 1 yr. Donate for scrap or worth a revisit?

We live in the temperate Northern California foothills, and lo these many months ago, my wife took my father's 2001 Infinity up the Reno mountain pass without seeing (or checking) the dangerously low ...
3
votes
3answers
13k views

My battery was too low, and now my check engine light is on

I've noticed it in the last year (2013) that my 2008 Jetta with the original OEM battery would be taking a little longer to start than before, sometimes (but very rarely) not starting in the amount of ...
3
votes
2answers
1k views

Is incessantly revving an engine necessary for tuning?

I have a neighbor who revs his engine loudly over and over again, for anywhere from 15 or 20 minutes up to several hours at a time, several days a week, and has been doing this for over a year. It ...
3
votes
3answers
920 views

How can I do a cheap but safe and good tuning which will improve the cars performance?

I have a Skoda Octavia 5 1.6 MPI and I want to make a good cheap safe tuning that will increase the cars performance above 100 hp it already has. How can I do that?
3
votes
2answers
8k views

Is short drive trip bad for your engine?

My wife's car often uses to drive to a nearby grocery store, which is too close to our house (about 2 miles). Some one told me that I should change the engine oil more often because engine is working ...
3
votes
3answers
3k 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 ...
3
votes
4answers
126 views

Diagnostic, diy repair guides, technical manuals

So I was wondering for a list of good diy diagnostic, repair softwares (not obd). I am aware of Autodata, Vivid and Mitchell on Demand. What else do you know? I am also looking for a software that ...
3
votes
1answer
44 views

Corsa D Stuttering Accelaration with Malfunction Light flashing

I have a 1.2l Vauxhall Corsa D (62 plate) that has done 63K miles. A problem has developed over the last day or two that is becoming a concern, and has got worse over the last 24 hours. Whilst ...
3
votes
1answer
19 views

08 Silverado 5.3 engine “click”

I have an 08 Silverado, that has a "click" coming from the engine when it first starts. Once it reaches normal temperature it seems to go away. All the belts look good but beyond that I'm not sure ...