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

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1answer
42 views

2000 Tacoma Stalls then Wont Idle

I have a 2000 Toyota Tacoma that has stalled 3 times in the past 6 months. The engine will turn off while exiting the freeway, admittedly at a faster pace than normal, and following the off-ramp as ...
5
votes
1answer
694 views

Jerks on 2nd gear at low speed

My car jerks on second gear when I slow down while on second gear and then want to accelerate back. After changing the plugs and air filter it got a bit better but after driving 500+ miles it is back ...
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votes
3answers
99 views

2005 Dodge Caravan - Erratic Misfire

The engine was misfiring for quite a while. At some point, the battery went dead due to a bad alternator and all the electrical systems went nuts. I replaced the alternator & battery. At some ...
5
votes
1answer
472 views

Minor grinding noise and vibration when car is idle

I have a 2005 stick shift Toyota Camry. Sometimes when I am at a red light or stop sign and the car is in neutral I feel a slight vibration from the pedals and a slight grinding noise coming from the ...
5
votes
1answer
169 views

2007 Hyosung GT250R not starting, some repairs have been made

Hoping to find some good advice on fixing my (above mentioned) motorcycle. I'll try to keep it brief but with as much details as I can. I had an issue with the bike and it sucked up some varnish from ...
5
votes
1answer
66 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 ...
5
votes
1answer
191 views

Subaru Impreza 2.5i - 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. ...
5
votes
1answer
119 views

Leftover parts after head gasket change; are they engine mounts or braces?

About a year ago, I replaced a head gasket on a 1994 Chevy Cavalier 2.2L. After I put everything back together there were two parts left over. The car runs good considering it's 20 years old, however ...
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votes
2answers
10k views

Should bore my cylinder or just hone them?

I'm in the process of rebuilding the 5.4L engine out of my 1999 Ford F250. I'm going to replace the pistons (and rings) because the black (teflon?) coating on the piston skirts is worn off and there ...
5
votes
1answer
165 views

How to reach bolt at the rear of BMW M41 Engine?

I can't manage to properly reach the top right screw (zoom picture of it on the second picture). How could I do that ? (the tool I have is too long to be able to go on the rear, there is nearly no ...
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votes
1answer
1k views

2006 Audi A4 2.0T, No passing power

I have a 2006 Audi A4 2.0T Turbo Tiptronic Automatic that has no passing power. When I step on the accelerator the car will shift down into a lower gear, rev about 3500 RPMs but will not shift up ...
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votes
1answer
3k 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 ...
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0answers
14 views

04 GMC Savanna G2500 4.8 V8 No Power

First time I looked at this the A/C compressor clutch wasn't engaging. Long story short: the high side pressure switch on the back of the compressor was unplugged. Noted that the engine was shaking (...
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votes
0answers
24 views

Accidentally poured gas into antifreeze in tractor

I was gonna fill our tractor with gas and there were to caps, a metal one a d a filter looking one, neither was labeled so I figured the metal cap was the gas cap, I put gas in it for just a few ...
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votes
0answers
36 views

2006 Honda CRV with engine sludge issue

The check engine light came on. Scoped it and the engine code P2647 came up. Changed the oil pressure switch and cleaned the screen. Check engine light came on again. Scoped it again and engine code ...
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0answers
27 views

Timing chain for a sunfire [closed]

Exhaust , intake & the other one at the bottom are lined up when I start after a full rotation they are not, what am I doing wrong?
5
votes
1answer
38 views

Toyota corolla verso 1.794 petrol vvt-1-t2 [closed]

Recently Purchased Vehicle @milage 81.075 in the past vehicle has consumed 5.25 Litres of oil a full oil composition test was carried by my Garage. They also advise it is an uneconomical repair it has ...
5
votes
2answers
98 views

Machine turns off randomly and won't start after staying off for a while

It all started about a year ago. I had to go to another city and the drive was about an hour long, it went perfectly fine. I left the car parked on the sun for about 2 hours, nothing special, on a ...
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votes
0answers
214 views

High Idle and Engine Noise in Chrysler 300c Hemi [closed]

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 ...
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votes
0answers
388 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 ...
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votes
4answers
104 views

Will my 2002 Mustang make it from California to Iowa?

I have a great 2002 Mustang automatic 6cyl in great condition, but I am a worrier and want some outside opinions. I am the second owner of the vehicle. Have owned it for 1year, 7 months and I get my ...
4
votes
12answers
20k 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 ...
4
votes
2answers
661 views

Parking a motorcycle with hot engine

I have a question regarding my motorcycle (Yamaha FZ8 - 4Zylinder 800cc). At the weeksend I was driving through a town. It was very hot outside and I parked the bike. The coolingwater-temperature was ...
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votes
2answers
1k views

I accidentally kept my vehicle Choke ON while riding?

I have Honda Dio 2015 Model. Yesterday, I kept the Choke ON while riding. I wanted to know what are the damages it probably causes to the engine? Does it have any after effects on the engine?
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votes
2answers
493 views

What damages may I have caused draining oil by filter?

My ATV oil drain plug is an allen 6mm bolt. The bolt was all rusty, and what I expected to happen happened - I stripped it. Instead of wasting times trying to remove the stripped bolt I drained oil ...
4
votes
2answers
126 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 ...
4
votes
3answers
151 views

What non-driver, non-terrain factors can affect vehicle miles per gallon?

I've been tracking the mileage on my 2015 VW Golf (a non-intercooled turbo, but not diesel, thank goodness). Of course, my driving habits and highway/city balance influence things greatly, but beyond ...
4
votes
1answer
97 views

1996 Mustang GT won't start with shifter in Park, but will start in Neutral

I just had this weird problem today. The engine will turn fine, but won't start with shifter in Park. Once started in Neutral the motor runs fine with no hesitations. Battery is strong. Any ideas?
4
votes
2answers
110 views

any downsides to early spark plug changes?

Are there any downsides to early spark plug changes? some say 10k 15k etc and some do it as early as 5k =S but would it be okay to get into the habit of changing them after each oil change (6k) miles ...
4
votes
2answers
380 views

Coolant boiling and smoke coming out of engine bay

I have a 1995 Toyota Camry SE that has 195,000+ miles that has started to develop some serious problems. Aside from what I believe to be an issue with the transmission, the car had been running ...
4
votes
2answers
229 views

Should I lap my valves if I have easy access?

Now that I have my cylinder heads out of my V6 Tacoma, I am considering taking the valves out to inspect them in case they are bent or whatever and grind them. There is no symptoms of valves ...
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votes
4answers
98 views

Can I use modern brake cleaner on exterior engine parts?

I want to clean the cylinder fins of my BMW R80GS 1991 with brake cleaner and a brush. If I am careful to not get it on any rubber parts or gaskets is it generally safe to use on the aluminum parts? ...
4
votes
1answer
105 views

My 95 civic lx from hell

I bought a civic from a couple of girls who had previously said that they had a bit of trouble with the car overheating, but it never broke down on them. It had 120k miles on it and they were asking ...
4
votes
4answers
5k views

What does it mean when soot is coming out of my exhaust?

I have a 2001 Jetta Wagon (Golf Variant is caller in my country). Petrol engine. Usually rides school and back (15 miles) with engine between 2000 and 3000 rpm. Just did a 300 mile trip at 3500-...
4
votes
2answers
2k views

Motorcycle heats up within minutes of driving in the traffic

Ice cold engine of my KTM Duke 200 heats up and shoots the highest temperature and the gauge reaches the extreme within like 15-30 minutes of driving it in traffic. And the engine stops and doesn't ...
4
votes
2answers
2k views

Blue smoke on engine start

I got my 2002 Camry when it had 86K and now it has 97K on it. In the morning when I start the engine, I see blue-ish smoke coming out of the exhaust for a while. I don't know if I had it before, but ...
4
votes
2answers
408 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 ...
4
votes
1answer
648 views

Meaning of dashboard “Check Engine Light” on motorbike

Please help me understand the meaning of this dashboard light shown in the picture. ABOUT BIKE SPECIFICATION What happen if it blinks RED ?
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votes
2answers
72 views

What material are combustion chambers made out of?

What is the standard material a combustion chamber is made out of on a standard L4 engine today? I want to build a new engine from scratch to test both my engineering and mechanical skills but ...
4
votes
2answers
111 views

What is wrong with my car?

My car had a broken piston, and broke down completely. I bought a new engine, and had it installed. everything seemed to be working aside from a low clicking sound when driving coming from the engine. ...
4
votes
1answer
21k 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 ...
4
votes
2answers
9k 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 ...
4
votes
2answers
68 views

Safely washing engine bay of Ford Focus

I am trying to clean the engine bay of my 2002 Ford Focus SE, which is really grimy thanks to years of neglect, and a valve cover gasket leak that I recently fixed. I have been reading about how to ...
4
votes
1answer
47 views

What are all the holes on an engine block deck surface?

I want to know what are all the holes for on a engine block deck surface? I Know some are to help with putting the cylinder head on and others are to bolt the head down. But what are the rest?
4
votes
1answer
290 views

What are the effects of excessive oil changes on an oil pump? (read description)

I would like to know what the effects on an oil pump are when oil is changed. Obviously after changing the oil filter the engine will run dry without oil pressure for the first few seconds while oil ...
4
votes
3answers
6k views

Why do valve lifters get stuck? How come they unstick by themselves?

I've seen this happen on a couple of different engines so far (BMW S62, Mitsubishi 4G63) but am not sure about how commonplace it is. If an engine isn't used for an extended period of time, the ...
4
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2answers
2k 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 ...
4
votes
1answer
3k 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 ...
4
votes
1answer
37 views

1997 Subaru WRX STI Type R - Strange and occasional turbo lag

After a longer drive (45 minutes on highway) my turbo is spooling but not putting power to the tires. The revs just kinda bounce there like it's hitting a limiter but it's only around 5k rpm. This ...
4
votes
2answers
141 views

Putting a cover on the bike while engine is hot

Is it safe to cover your bike as soon as you shut the enigne after a 20 mile ride? I cover 40 miles daily to and fro for work. I reach home around 11 pm and barely have the patience to climb down from ...