General internal combustion engine questions.

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4
votes
1answer
240 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 ...
4
votes
1answer
348 views

High pitch whistle at a very particular throttle level

The symptom: while accelerating, at a very particular throttle level/pedal angle my engine recently started whistling in a very high pitch. If I let go of the gas or push it in more the sound goes ...
4
votes
1answer
892 views

'98 Camry has occasional rough running / low speed idle problem

My '98 Camry (with the four-cylinder engine) usually starts, idles and drives like a dream. About a year ago I had the entire exhaust system replaced (including cat) due to corrosion. Since then it's ...
4
votes
1answer
271 views

Misfiring Engine Hyundai Accent Executive

My Hyundai Accent Executive is 2001 model. Recently the engine started misfiring badly during idling with Air conditioner on. It is almost like the engine is going to turn off any moment. The ...
4
votes
1answer
2k views

How to clean the MAF sensor on a 1997 Nissan Altima?

I have a 1997 Nissan Altima sedan. I’ve been told the issues I’m having with my car is from the mass air flow sensor. I was wondering how to clean/repair this sensor and contact points the best? What ...
4
votes
3answers
175 views

Honda Odyssey engine cut out

I have a 1997 Honda Odyssey automatic, it stopped running in the middle of the road and when I tried starting it again it made a loud whining sound, then I turned the key off and tried again and it ...
3
votes
5answers
1k views

Why can some cars go through water while others can't?

Why can some cars (mostly old Russian cars on YouTube) seemingly go through water while others can't? I'm talking about situations when the water level is at half the height of the car, so the engine ...
3
votes
3answers
642 views

why do engines have so much unused horsepower?

I've looked at the power rating of an engine used in a Humvee (5500 lbs) and was surprised it's only ~190 horsepower, which is exceeded by many 4 door sedans. So an obvious question is why doesn't my ...
3
votes
3answers
1k 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 ...
3
votes
2answers
91 views

Top Dead Centre

I replaced a cylinder head gasket on my 1993 Holden Apollo (Same engine as the toyota camry 5S-FE). However when I went to get TDC I think I may have forgotten to put the car in Neutral. Could this ...
3
votes
2answers
2k 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
3answers
122 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
1answer
92 views

Which engine part is this?

I own a speedboat that is powered by a 5 liter V8 Mercruiser with 200bhp. Yesterday when trying it out for the 1st time this season, 2 things happened: 1 - the boat was always trying to turn left ...
3
votes
4answers
205 views

How does cold, dry weather affect horsepower?

It's now properly winter over here in Australia, and the butt dyno is very favourable of the cold, dry air. It's like a free cold air intake for everyone, right?? I can think of two scientific ...
3
votes
3answers
133 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
2answers
2k views

Motorcycle popping on acceleration

I have a 1975 Honda XL250 that I bought earlier this summer. Up until recently its been running great. It was leaking a little gas, but nothing too serious. When it started to get worse, I opened up ...
3
votes
2answers
518 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
182 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
380 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
114 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
1answer
607 views

Maxima (2002) MAF Sensor Failures

I have a 2002 Nissan Maxima that I've owned since 2003. I'm now on my sixth Mass Air Flow (MAF) sensor. What seems to wipe them out is hard acceleration (3/4 throttle - not so extreme as to induce ...
3
votes
1answer
49 views

Is there a place where I can buy new stock GM Engines?

I am looking into a new project, and one idea that was tossed around is to replace the motor on the truck with a FlexFuel model. I looked around and see gmperformanceparts website, but they don't have ...
3
votes
3answers
308 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
2k 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
2answers
1k views

BMW 330D 2001 E46 Turbo Charger not working as expected after changing

I have a problem with my car. My car: BMW 330D, 135kw, 2001 year, E46. A week ago my turbo charger got broken when I was driving. There was a lot of white smoke going out of exhaust and there was ...
3
votes
2answers
308 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
2answers
611 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
155 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 ?.
3
votes
2answers
77 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 ...
3
votes
1answer
1k views

OHV vs. OHC: which is faster in speed, horse power?

What are the main differences in OHC and OHV engine designs, and which is faster or more powerful? Also, which is more reliable?
3
votes
3answers
524 views

Looking for suggestions about what to try and fix on my tecumseh snow blower engine that stalls after you stop putting load on it

I have a troy bilt snow blower with a tecumseh engine and it starts great and runs great. Most of the time, anyway. It will scoop up snow and throw it just fine, and then for no obvious reason it ...
3
votes
2answers
3k 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 ...
3
votes
2answers
761 views

What is the potential damage of a temporarily partially submerged front end?

I have a 2005 Nissan Sentra (base model, FWD, 1.8L 4-cyl engine) and I took some bad advice from the Maps app on my iPhone and I ended up driving on a very, very bad road. At one point, I drove into a ...
3
votes
2answers
1k 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 ...
3
votes
1answer
57 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 ...
3
votes
1answer
119 views

Should I run my generator dry in preparation for storage?

I think this is on-topic after reading the FAQ, so I figured I'd go ahead and ask. I gave my gas generator its scheduled 3-month interval "workout" last night, and after letting it run for about 30 ...
3
votes
2answers
6k 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 ...
3
votes
2answers
1k views

Host of small performance problems in 2006 Hyundai Elantra

I bought a used 2006 Hyundai Elantra (Automatic) back in early 2011. At the time, I was needed to have a car quick, and it seemed like a good deal, but the longer that I've owned it, the more problems ...
3
votes
1answer
999 views

2000 VW Golf TDi (Mk. 4) grey smoke from exhaust before engine has warmed up

I have had my Golf for 8 years. It’s had good maintenance and a the record is kept by my dad. It’s just passed its MOT (Ministry of Transportation) test, and the mechanic mentioned that the tappets ...
3
votes
1answer
2k views

How do I find a vacuum leak? I'd highly prefer not to use a carb cleaner spray

The car is a 1998 Oldsmobile Intrigue with 3.8L V6 engine (3800 Series). I've been doing my research and due diligence, but please understand I'm very inexperienced with automobiles. I went to ...
3
votes
1answer
366 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 ...
3
votes
2answers
370 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 ...
3
votes
3answers
616 views

Is it feasible to Turbo a NA engine while maintaining 87 AKI octane fuel use?

I initially thought there should be a way to bolt on a small aftermarket turbo onto my naturally-aspirated Honda D17A2 (9.9:1 compression ratio) engine in my EM2 Civic EX without having to switch from ...
3
votes
1answer
1k views

Car Stalls When Coming to a Stop

Make: Chevy Model: Cavalier (4 cyl.) Automatic Year: 1993 Miles: 230K Normally my Cavalier drives just fine without problems. However, if I drive for 45+ minutes then it will sputter and stall out ...
3
votes
1answer
145 views

What is a gasket head kit?

I am looking at buying a used car, many listed have had "gasket head kit" installed? What is a gasket head kit? Should i be wary about buying a car with one installed? Will the "gasket head kit" ...
3
votes
1answer
101 views

What could make a noise when I decelerate with a manual gearbox?

Update 06/23/2014 One week later, this noise is now very, very loud, even when I don't decelerate. As soon as I put the 5th gear and clutch, it vibrates whether I accelerate or not. It's like if the ...
3
votes
2answers
112 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. ...
3
votes
2answers
489 views

2013 Yamaha XT250 engine clicking/ticking noise

I just bought my xt250 as my first bike after getting my permit about a month ago. It's 2013. At 100 miles I dropped the oil and changed the filter. As a small woman I've also installed lower links to ...
3
votes
1answer
193 views

How often should spark plug wires be replaced?

I last replaced them with the plugs about 4 years/60-70k miles ago. I bought platinum plugs I if I remember correctly, so I still got some life on those. The car (2001 Buick Regal) is still in good ...
3
votes
2answers
365 views

High-pitched squealing coming from engine

I Have a Datsun Safari 1983 2,8L petrol. Recently I was driving off road with it and the next morning the fan belt was making this squealing noise. So I adjust it and all was well. 300km later a new ...