General internal combustion engine questions.

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3
votes
2answers
95 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 ?.
2
votes
2answers
2k views

What is the purpose of a drive-shaft?

what is a drive-shaft and why we need it in a car? I do get the point of having crankshaft (using Wikipedia) but still confuse with drive-shaft
0
votes
0answers
21 views

Remove dark layer of particles stuck in Diesel engine tubes?

My BMW E36 M41 engine seems to have a dark dust in the small tube that goes out from the EGR valve. (the other tube contains a sort of dark liquid...) Is it advised to cleanup that dark matter ...
3
votes
0answers
135 views

Engine suddenly died on uphill, then went back to life after a few tries

Car: BMW 318 TDS Compact. 90HP. 168.000KM Situation: was driving a very intense uphill section at 70km/h, in 4th gear (2.000 rpm). Everything was ok. Engine sound, temperature, etc... Suddenly, ...
6
votes
3answers
10k views

Car temperature displaying below Cold or just above Cold always?

I've noticed on my 94 Integra (bought used about 2 weeks ago) that the thermostat is often below cold, sometimes above cold but never up to the center mark. Today I was boiling inside my car as it ...
10
votes
3answers
3k views

Is it OK to mix oil of different viscosity?

I have a Mazda RX-8 (with a Wankel rotary engine). Mazda advises North American owners to use 5W-20 oil. The engine was just replaced 200 miles ago by the dealer so it currently has 5W-20 in it. ...
1
vote
4answers
178 views

Why didn't tuning box or remap work on my mondeo st tdci

I brought a tuning box a few months ago. When I fitted it, it didn't work so I sent it back. They tested it and it was working fine, so I tried it again, but it wouldn't make my car any quicker. So I ...
3
votes
2answers
90 views

What will happen if there is something else also with petrol in car

Today someone broke my car fuel outer case and taken out fuel. I came home by driving but then i have now one doubt in my mind. What if he put something else in tank like water, sand, etc in there. ...
1
vote
1answer
39 views

How to spot remove high temp engine paint?

I've recently painted an engine post reassembly, due to cost reasons. No doubt I've encountered overspray on certain parts. I know sandblasting the engine proper is a huge no-no, and soda blasting ...
2
votes
1answer
35 views

Engine Whine Problem

I have a 2000 Ford Explorer V6 4.0, manual. I bought it brand new and have put just over 175,000 miles on it. I was driving down a dirt road to my home and noticed what sounded almost like a hissing ...
4
votes
2answers
880 views

Polo TDI 2004 - intermittent power, smoke, turbo issue

Car: Polo TDI 2004 1.4 with 190,000 km (118,060 miles) on the clock. While Issue: driving it intermittently (distance/time are not factors it seems) it starts to spew black/dark grey smoke and all ...
3
votes
1answer
2k views

Car starts fine after sitting for half a day but has trouble immediately after being driven

I have a ten-year-old car that I don't use too often (it mostly sits in the garage). Last month, I took it for a ride and the engine overheated. I took it to the service station, and the guys there ...
0
votes
2answers
124 views

Proton jumbuck loss of power/shaking

I was driving to work this smorning when my car started shaking and losing power no matter how much I put my foot down after about 2km of driving it started working fine again but the engine has a ...
2
votes
1answer
167 views

How much does displacement affect performance?

I'm interested in learning more about the steps that can be taken to increase the performance of an engine. I'm curious how much displacement affects performance. For example, compare the following ...
2
votes
2answers
58 views

What does CC refer to when describing an engine?

I have been learning about various older cars on Wikipedia. I've always wondered what the "cc" refers to in the engine description. For example: 1964–1969 Porsche 911: 1991 cc 1965-1969 Porsche 912: ...
4
votes
1answer
451 views

Which Reluctor Wheel on LS Engines?

Around 2005 or 2006, GM started using a 58-tooth reluctor wheel, where before they used a 24-tooth wheel in the LSx based engines (LS1, LS2, LS3, etc.). This wheel is used as a way for the computer to ...
4
votes
3answers
605 views

Cylinder 1 and 4 has low compresion, after engine has been redone

I have a Opel Corsa 1999 B type. We had a mechanic redo the engine about 4 months ago, but this week it just does not want to start. Today had other mechanic look at the engine, and did a quick ...
4
votes
4answers
618 views

Slow Accleration And Moving RPMs

UPDATE: I bought a scan tool and downloaded the torque app. I don't get any error codes. I decided to drive it again today. I drove about a quarter mile and barely got to 20MPH. I turned around and ...
1
vote
2answers
82 views

Problems in building higher displacement 2 stroke engines

I understand(from preliminary research) that when engine gets bigger(higher displacement) it is practically not possible to have a two stroke engine. What are the implications in building a higher cc ...
4
votes
2answers
100 views

Can I use a CNC machine or waterjet to make an adapter plate to adapt a 5 speed transmission to a rare, obsolete engine?

I am the sad, proud owner of a Nissan SD33T (Diesel), mated to a 4 speed T-19. The power this engine outputs (101HP, 160#/TQ stock) means it struggles on the highway, and I don't want to sacrifice my ...
2
votes
3answers
91 views

When should we change the machine lubricant? Cold engine or hot engine?

According to the manual, we should change the lubricant when the engine is still hot to easy the lubricant flow out completely. But from other perspective, loosening the bolt at the high temperature ...
2
votes
1answer
75 views

drove without #3 cylinder plug wire. Help!

I drove without a spark plug wire in my 1978 GMC Sierra 5.7L. It drove fine and I didn't notice any problems until it died after about 2 miles. It was acting as if it was out of fuel or power when it ...
4
votes
1answer
121 views

Astra Turbo sounding like a diesel

http://www.youtube.com/watch?v=ph6JOhFJcJA The video above demonstrates the sound I hear when my car is at operating temperature. I don't know why it would sound so rough. It doesn't sound quite as ...
2
votes
2answers
61 views

1997 ford f150 lariat

We have a 1997 ford f150. My husband replaced the thermostat, but it still reads cold and doesn't put out any heat. Any suggestions? We are in Ohio, it's December, and it's freeeezzzing - need heat! ...
5
votes
4answers
159 views

Engine repeatedly dies at shorter and shorter intervals this cold morning, finally won't start

I have Pontiac Grand Am 2004. It's been needing some regular maintenance, but other than that runs mostly fine. When I went out to start it this morning, it started fine. I went to start brushing snow ...
7
votes
5answers
12k views

Is idling bad for your engine?

If I sit in my car for 30-40 minutes with the AC and the car idling, does that "hurt" the engine, or does it simply waste gas and pollute the air? Would it be better if I turned off the car? A ...
3
votes
3answers
306 views

Engine power specification at different rpm?

Car companies advertise power of an engine at different rpms. Car 1: 80 PS at 6000 rpm Car 2: 85 PS at 6500 rpm What does the power at different rpm mean? Does it mean Car 1 has better power than ...
4
votes
3answers
1k views

Slower Engine Start When “Cold”

I have a 2012 Honda Civic EX (4 Cyl Automatic, 5-speed transmission, Regular Gasoline). I get it serviced regularly and it has around 28k miles. The engine light has never come on. I am noticing this ...
2
votes
2answers
140 views

Changing Motor Mounts

My 2007 Ford Focus ZX3 SES (65k miles ) has a vibration at all engine speeds. Other research has led to a high probability that this is from worn out motor mounts. I have read after market ...
4
votes
1answer
230 views

Grinding Sound at Specific RPM/Speed

I have a 2011 Ram 1500. For about a month I thought I was hearing a clunk between 2nd and 3rd gear. I finally decided to listen carefully by turning my radio off. I now certainly notice it, but it is ...
6
votes
0answers
461 views

BMW 530xd e60 2008 diesel engine turns but won't start

I have a problem with my BMW, just bought it, previous owner hasn't been facing such problems. When the engine is cold for e.g.: after night. Outside temperature is about -4 to +1 degree, engine won't ...
3
votes
2answers
63 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 ...
4
votes
2answers
55 views

vanagon lurches forward, won't accelerate past 20mph or so

I have a manual 1982 diesel VW Vanagon with a 1996 Passat TDI engine in it. This morning (low 40s temp), accelerating up a hill, heard a hissing sound in left rear. Check tires, no problems. Able ...
2
votes
1answer
88 views

Oil in coolant none in oil

I have a 2003 F150 with a 5.4 engine. It started running rough and I noticed oil in my coolant. I checked the dipstick and it is clean. I was just a little low so I added oil. When I removed the oil ...
1
vote
1answer
55 views

Idle sometimes too high (BMWM50B25TU)

Yesterday I had to drive a lot and after 100 miles I noticed that the idle won't go below 1500 rpm (should be 600) on my 1993 BMW 525i (euro model), except when I drove slowly in a high gear. This ...
2
votes
1answer
113 views

High pitched noise from engine unless brakes engaged

I'm driving a manual 96 Toytota T100, and recently the engine started making a high pitched, almost inaudible whine. Some things I've loosely figured out: It always stops when the brakes are ...
2
votes
1answer
64 views

2007 Camry went dead while driving. What are some reasons that could cause this?

I've got a 2007 Camry. Bought it brand new from the dealer, have only ever had it (regularly) serviced at the dealer. I was on my way home from a meeting today, and I was driving down a road. The ...
6
votes
3answers
2k views

How to begin learning engine tuning?

Quite simply, I want to begin tuning and modifying automotive engines for hobby. I have always been fascinated with cars, and I want to become knowledgeable in as many aspects of car tuning as ...
2
votes
3answers
229 views

VW Jetta II - engine misfires when climbing a hill

This is a VW Jetta made in 1984 with 1.6L petrol engine (code "EZ"). It starts OK (though if it has been a wile since last start, it takes some cranking to start the engine), but when climbing a hill, ...
12
votes
4answers
8k views

Driving in second gear at 65+ mph

I accidentally drove my 2000 Grand Marquis on second gear on the highway. I was going 65 for like 5 minutes and tried to get it to 70mph but the car was shaking, when I realized I put it into regular ...
3
votes
2answers
61 views

OVERHEATING 07 grand prix

My car has been overheating bad I took it to auto zone and hooked it up to the check engine thing and they said it was getting to 207 withing 10 secounds. It get hot fast and my heat doesnt work ...
1
vote
3answers
228 views

How do I determine if my Toyota Camry 1994 LE has a 5S-FE or 1MZ-FE engine?

My car: Toyota Camry 1994 LE, 4 cyl, 4 door sedan. What is the type of the engine?
1
vote
0answers
57 views

Honda Accord 2003 V6 - seems that there's a slight lag in acceleration than before - what could be the cause?

I've recently noticed that there's a slight lag from when I depress the gas pedal to feeling the car accelerate. What could be the cause? I the mornings when I start the car I hear a ...
1
vote
0answers
29 views

New car should run slow for better mileage - Myth or reality? [duplicate]

I just bought a Ford Ecosport and it has been only hours old. The dealer told me to drive the car at as slow speed as possible for the first 3 months (not more than 80 kmph) although my car can easily ...
1
vote
2answers
197 views

Lower quality oil vs high quality oil [closed]

tl;dr Which is best? Buying high-quality, longer-lasting, but more expensive oils and changing oil less frequently or buying lower-quality oil but changing more frequently? As I'm trying to find my ...
1
vote
1answer
102 views

Mean Piston Speed in Turbocharged Vs. Naturally Aspirated Engines

Does anyone know why the mean piston speed might be lower in the average turbo gasoline engine compared to the average naturally aspirated engine? Scratching my head to figure this out but no luck so ...
3
votes
2answers
2k views

Car shakes when in gear at red light

I bought a '96 Toyota Camry about a month ago. When I first turn the car on and the engine is cold, I can have the car stopped (in gear) and it will not shake. The idle RPMs will be at 1000. After ...
4
votes
2answers
2k views

Car dying at low RPM only after filling up with gas

My question is closely related to one about a Jag dying at low RPM, but is slightly different because it only occurs after refueling and because the problem persists after cleaning the throttle body, ...
7
votes
4answers
28k 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 ...
1
vote
1answer
56 views

Overflow tank's lid has been opened for a long time

I've just found that overflow tank's lid has been opened by itself. I dont know how long maybe four months since I bought it. Coolant level is now above the full mark. Does it cause any damage to the ...