General internal combustion engine questions.

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0
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0answers
4 views

Yamaha engine noise on idling

Strange Sound inside engine like sand inside engine chamber. And while throttling it immunes with regular noise. But on idling it is very obvious. Vehicle is old. 2007 model Tried changing the ...
0
votes
2answers
45 views

Sludge in the radiator

I have a 08 Kia Rio 5. A mechanic recently rebuild the engine, replaced water pump, changed timing belts etc etc, but now it's leaking oil - not just that, I also found sludge in the radiator and ...
22
votes
9answers
26k views

Is it necessary to 'burn in' or 'break in' a new car?

I've just bough a new 2011 plate car. I've heard stories of people 'burning in' engines for the first few hundred or couple thousand miles using methods such as: Not driving above 50 mph. Varying ...
6
votes
4answers
1k views

What happens if unsuitable oil is used in a vehicle engine?

I recently heard an urban legend-like story about a guy in a developing country who decided engine oil was too expensive and so used some vegetable oil instead. The story says the car ran for some ...
2
votes
0answers
19 views

Typical voltage drop when air con, radio, lights, etc. in use

Imagine the engine/alternator are running and the battery voltage is 14V. If I now turn on the air conditioner, radio, headlights, seat warmer, cigarette lighter, should I now expect the voltage to ...
4
votes
1answer
3k 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?
1
vote
1answer
87 views

Saab 93 Automatic died when waiting for traffic light and won't start again

I just bought a 2006 Saab 93 Aero 2.0T automatic in October, 72000 miles. Everything seems perfect. But 2 weeks ago, the engine died while I was waiting for red light in the town centre, I just braked ...
-1
votes
0answers
12 views

CJ2A Willys Jeep [on hold]

I have a CJ2A Willy's jeep and I want the motor and transmission rebuilt where should I go and how much would it cost(I live in Hartland,CT.)
10
votes
1answer
124 views

Changing Firing Order in a 4 Cylinder Car

Backstory In motorcycling you can get cams that change the firing order and time from a traditional 1,3,4,2. It's was very common in American roadracing in the 1990's to hear 4 Cylinder engines that ...
2
votes
0answers
20 views

Will a 95 4AFE engine work on Euro 4 gasoline?

I am hearing news in our country that they might upgrade our fuel from EURO 2 gasoline to EURO 4. I am worried that it might damage the engine on my 95 corolla, which I still plan on keeping for at ...
3
votes
1answer
227 views

1990 Toyota Pickup 22re fuel injection EFI relay is getting hot

While driving my truck, the engine stopped dead, like it ran out of gas. I used a by-pass wire to go around the EFI and Circuit open relay, the truck ran fine. I noticed a ground wire leading from the ...
6
votes
3answers
396 views

Trying to figure out the name of this car part!

I got new tires today and saw that the part that's circled is broken on my car. It looks like it just snapped at the top because part of the bolt appears to still be in whatever the tube is. Anyone ...
3
votes
1answer
793 views

Identifying American (Mercury) Mariner outboard

We have Mariner 9.9E outboard motor. Having hard time figuring out year and Yamaha equivalent (early Mariners were Yamahas in disguise). There is very little information on those, and it is hard to ...
4
votes
3answers
2k 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 ...
2
votes
2answers
37 views

Engine doesn't want to stop

I have a '59 Nash Met. with a straight 4. It runs great, but when I turn it off the engine continues to run for up to a minute, sometimes violently shaking as it comes to a halt. Any idea what causes ...
0
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1answer
21 views

weather causing power loss

Why would my engine lose power when the weather temperature gets warmer. While driving the vehicle will not have as much power when it gets warm or hot.
4
votes
2answers
1k views

Add 2 stroke oil to a 4 stroke petrol engine during burn-in period

I'm planning to get a new petrol (gasoline) car soon. A friend of mine, who worked as a motorbike mechanic when he was young, told me he puts a small quantity (125 ml / 4 oz) of 2 stroke oil in the ...
4
votes
2answers
97 views

Royal Enfield Classic 350 - Motor Break-in Best Practice

How many km's should be driven with a lower speed to setup the bore for a Royal Enfield Classic 350, what is the minimum speed for that duration and how many km's should we maintain that lower speed?
1
vote
1answer
70 views

my car acts like its going to stall at a stop

my car drives fine but when i come to a stop light or any stop it acts like it will stall but never does. did some easy things like oil change. no check engine light is on but it seems to keep ...
2
votes
1answer
1k views

Car sputtering and stalling when idle and going into first gear

My 2005 Honda accord is starting to sputter and stall. It started all of a sudden one day and figured it might be my oil so I had it changed since it was time anyway. That seemed to work fine there ...
3
votes
1answer
39 views

Overheating & boiling in the overflow tank

I have had the gases checked in my overflow tank (which boils short distances) and also over heats. Two different mechanics tested the gases and said it's not the head gasket but yet it still boils ...
1
vote
1answer
41 views

2006 Volvo s40 started smoking suddenly

Had my car serviced two weeks ago fuel consumption and great and been driving smoothly. Yesterday driving from work it suddenly started smoking terribly. Stop at the gas station checked the oil and it ...
0
votes
1answer
105 views

96 Toyota Camry won't stay started

My 96 Camry starts first time every time then stalls after 10-20 seconds? Last year it ran fine but rarely would stall @ running speed. I had to set for 2-3min before it would start then it ran ...
2
votes
1answer
241 views

Having difficulty starting car in the morning/first start after a while

I've got a pretty old car (Nissan Pulsar J1J 1991 auto, 203K kms on odometer) and it drives pretty well - I'm using in on a roadtrip across New Zealand and have taken it on pretty mountainous terrain ...
4
votes
1answer
267 views

2015 STI White smoke

My 2015 Subaru WRX Sti is emitting white smoke from the exhaust. The smoke smells like burning electronics. When I pull over and open up the hood, I also see white smoke in the engine bay. The smoke ...
5
votes
5answers
7k views

How reliable is a second-hand Subaru 2.5 RS 04-05?

Basically, I've been a Subaru enthusiast for a few years but never been able to purchase one because I'm still a student. However, this summer I will be able to. The issue is that I need a reliable ...
0
votes
1answer
25 views

Noise when the engine is idle

I would like to know why my car is making noise when the engine is idle, but the noise is silence when I pressed the clutch ?
5
votes
4answers
5k 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, ...
2
votes
1answer
34 views

What are reasons my engine would sputter when turning off?

I have Subaru Impreza 2.5i (2.5 NA). My car's engine sputters a bit when turning it off. Specifically it seems like the cars engine keeps turning for a little longer right after I remove the keys. ...
3
votes
1answer
299 views

Brake Specific Fuel Consumption of 2-stroke vs 4-stroke

How much fuel do various types of engines burn per power output? I'm especially interested in naturally aspirated piston engines, and comparing two-stroke to four-stroke. The wikipedia article gives ...
3
votes
0answers
27 views

Rebuild for longevity

So, I have a question about a 98 2.0 rt neon. I am going to get a top/bottom rebuild on it, the block has 260000 km on it. I have seen rebuild kits on the market anywhere from 300 dollars (ebay ...
4
votes
2answers
627 views

Dealership Installed “Oversized” Oil Drain Plug As Solution

In this question, we discuss stripped oil pan threads. I learned it is a result of user error - over tightening and cross threading, by the dealership I consistently go to. Many people have come ...
1
vote
1answer
29 views

1974 Ford Econoline E200 Van acts fuel starved after warm up

I have a 1974 Ford Econoline E200 Van with an 8 cylinder with the present symptoms: It starts and runs great, but once is warmed up, it feels like it is not injecting fuel. It loses power and slows ...
2
votes
0answers
28 views

Engine Reving Up in Park and Neutral?

I have a 2001 Chevy Silverado 1500, it has about 118000 thousand miles on the engine, lately it is taching up to over 2000RPM only when i put it in park or neutral. Once i put it into drive or any ...
8
votes
2answers
2k views

Low power, bad gas mileage, smelly exhaust after engine work

My 92 Civic has had low power (need to use at least one gear lower than usual to get the same power) and has been getting bad gas mileage (15-25mpg vs 32-42 mpg usual) since I replaced the head ...
3
votes
0answers
30 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 ...
0
votes
3answers
134 views

Derbi Senda 50cc won't run correctly?

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 start ...
1
vote
0answers
16 views

over loading, missfiring

My car is missing particularly whenever ur going up hill or in any case where u have to give it more gas. I've replaced plugs, caps, Cool Pak's. Ignition module, tps sensor, mass air flow sensor and ...
4
votes
1answer
41 views

Replacing an engine in a Chevy pickup ('85 K10). Is 190hp enough?

My friend is looking to replace the engine in his older Chevy '85 K10 pickup and found this engine http://www.summitracing.com/parts/nal-10067353/overview/year/1985/make/chevrolet/model/k10. Is the ...
1
vote
0answers
28 views

Engine smooth after techron then rough again

I used techron additive. After a gas tankful, the engine is smooth and powerful as new. However after another tankful of normal gas the engine is rough and sluggish again. Why is this happening? ...
2
votes
0answers
96 views

2003 Suzuki Katana 600 shuts off after running for 10–20 seconds

My 2003 Suzuki Katana GSX600F shuts off after ten to twenty seconds after start. It doesn't spit and sputter, it just shuts down. I have loosened the bowl screws while it's running and confirmed that ...
4
votes
4answers
12k views

Diesel Engine difficult to start

I have a diesel powered Audi A4 B7 (2006) 2.0TDi (the 170BHP variety) with a manual gearbox, which I've owned for around 18 months. The car has just short of 100k miles and has a full dealer service ...
2
votes
1answer
39 views

E46 Check engine light on at high altitude

In my E46 BMW, the yellow check engine light always turns on when visiting Lake Tahoe (altitude ranging from 6000-8000 feet). It usually turns off if I've been there for a couple days. After many ...
4
votes
2answers
2k views

Lugging the Engine (Manual Transmission)

So...lugging the engine obviously isn't something that is good. But why? For example when you feather a clutch to get the car moving, it lugs for a quick moment when you hit the catch point (When ...
2
votes
4answers
2k views

Is starting idle RPM always lower in colder temperatures?

I've noticed that my 2008 Jetta 2.5L 5W40 generally starts up with an idle RPM of at most 1.2K RPM around the freezing temperature (say when the temp sensor reads 33°F), or even at just about 1K ...
3
votes
1answer
85 views

why is it not good to stall a cold engine

I've always known that you cannot stall (regular turn off by turning key (i'm not sure how that's called in english)) an engine if it is not yet reached it's work temperature. For example, if i go to ...
1
vote
0answers
14 views

2001 GMC Jimmy wont start?

Hi I have a 2001 GMC Jimmy it was running fine, then parked it. it starting acting funny, sometimes would take a couple times to start, so checked my oil dipstick, it read a little high and smelt ...
5
votes
2answers
241 views

Ticking noise when accelerating

I have a Vauxhall Corsa "C" (2003)(EU) which is a standard 16v 1.2 petrol, the engine is chain driven and sits at 50k. I don't think it was well looked after (service wise) in previous lifes. ...
4
votes
1answer
41 views

E46 engine chirps when idling in the morning

The title pretty much sums it up. If I haven't driven the car in a few days, the BMW E46 engine makes a faint chirp for about 30 seconds when I start up the engine. It's more like a rapid chirp, as ...
6
votes
5answers
16k views

How to get a motor to Top Dead Center

I'm not sure how specific to my car this is or not, so I will include my car information just in case: It's a 1991 Honda CRX, base trim(the motor is the d15b2). On to the question: How do I go about ...