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Questions tagged [engine]

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

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VW Polo strange issue of overheating

can I kindly ask your opinion on my car issue? I'm not deep in field of engines and this problem is causing my serious headache and a total waste of cash without any results. I've a 2015 VW Polo TDI. ...
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What are the technical differences between a 2SZFE engine manuactured before 2005 and a 2SZFE manufactured after 2004?

I need to change my engine, I also found a company willing to perform the paperwork for changing to the same engine model. The car is a Toyota Yaris Luna with semi‑automatic transmission manufactured ...
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Does a more powerful engine use less fuel for a specific load than a less powerful engine?

A colleague told me about a truck driving in the mountains. He said if the engine is too small, it would use more fuel to pull the truck up than if the engine were larger, noting the reason is the ...
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Car not starting even after replacing coil packs, crankshaft sensor

I have a Nissan Note 2005 model and its failing to start, recently I replaced the coil packs and crank shaft sensor and it still doesn't start, when you test the coil packs manually they are not ...
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Effect on ECU on turbo install on N/A engine

I own a Suzuki Swift M13A non VVTI, it have both MAP and MAF sensor, Its N/A engine with compression ratio 9.5:1. I want to install a turbo on it with 0.5 bar boost. I would like to know if MAP and ...
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Are there “preventative healthcare” options for cars? [duplicate]

I've had a Volkswagen Passat for a little over a year now, and it's been driving without any major issues so far. However, I've noticed the ride feels just generally "worse" that it did before. ...
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What things cannot be tested(except by elimination) when trying to diagnose a sluggish engine?

As far as I'm aware there are certain things that cannot really be diagnosed if you have a sluggish engine and so you can only find them by elimination. As an example if you test a car due to ...
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What things are tested during a diagnosis for a sluggsh engine?

I enquired at both dealer and garage about diagnosing my car for being a bit sluggish and less peppy. Both said it usually takes one hour to find the problem\narrow it down for such a matter. I'm ...
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Problems with Turbo Engine of Audi TT 1.8L 2005 150BHP

I bought this car a couple of months ago and last month had a major issue, the car just stopped driving! I called the AA who told me it was the timing belt. I got towed back home and took it to my ...
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125cc sym scooter struggles to start and bogs down when accelerating

Hi guys I have a 125cc sym scooter it struggles to start when cold and bogs down when I twist the throttle no performance at all and when n put my air filter pipe on it sucks the petrol into the ...
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Just had engine rebuilt, since that i had to replace fuel pump, now heater is blowing and no hot air. Could this be due to the rebuild done?

i just had an engine rebuild and since have had several minor but potentially expensive issues. Can a heater be affected by an engine rebuild? I picked it up 3 weeks ago and was informed that if my ...
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Cold weather idling issue, white smoke, black soot and loss in power

I have a 1976 cj7. I recieved it as a gift from my Dad in March this year. I absolutely love this Jeep and have been driving it as often as possible. It had a really bad idle and severe exhaust/fuel ...
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1answer
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Dodge Ram engine stopped when making right turn

I have a 2005 Dodge Ram. I was making a right turn and the whole engine stopped, brakes seized and the wheel locked. Then it started right back up, It seems to be fine now. There is no check ...
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1answer
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Car overheats once AC is turned on

I have a 2005 model of Sienna with 154,000 miles. The car overheats once I switch on the AC over a short distance. With AC off the car runs smoothly. The mechanic has washed the radiator but the ...
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Mazda 6 2004 something on the inside is rubbing my tire on the passenger side

Mazda 6 2004 something on the inside is rubbing my tire,I felt it it feels like something from the engine is not up right
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Engine whine / whir noise while revving Rav4

Rav4 2013 2.5 2AR-FE I noticed that there is a constant whirring noise that seems to match the engine speed. It doesn't matter if it is in neutral, drive, reverse, park etc. The sound seems to pretty ...
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1answer
39 views

Should I steer clear of a moped 17 years old only 50 miles on the clock

I think I'm about to purchase a super clean moped that's 17 years old and is said to run "perfect". It comes with the promis of an MOT if I buy. It does look mint - V5 in owners name but he hasn't had ...
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Injector leaking/seeping clean diesel over nut/body

I've got a 2005 Mazda 3 (ford inside), engine DLD-416/DV6/MZ-CD 1.6 Diesel, 109 PS. When I was blanking the EGR valve I saw some diesel surrounding the injector bases on all the four injectors. The ...
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I have an 08 Ford Escape, limited 4x4

Sat. Had tune up. Sun. Check engine light cam on. Shop said clamp came off. Monday going 40 mph the rpms went to 3.5. Normally at 50 mph the rpms at 1.5. I would like to know what's going on?
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Can some one identify this part from under a Renault Captur 1.4 dci 2018

Does anyone know what this is From under the engine of a 2018 Renault Captur 1.4 dci
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0answers
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error code p0335 [crankshaft position sensor] 2000 nissan maxima

2000 maxima with 100k miles.pending error code p0335 which is crankshaft position sensor. engine light is not on. it has 2 sensors i changed both of them but nothing changed. Symptoms are;sounds like ...
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What vehicles shut down by cutting off fuel?

I know that electric fuel pumps and to a lesser degree electric fuel injectors are ubiquitous, but I am wondering how many automotive or truck engines actually shutdown by starving fuel from the ...
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2answers
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Oil in the cooling reservoir

I have milky white oil in the cooling reservoir. The vehicle in question is a BMW 318i and was bought 5 days ago. What would be the most like cause?
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1answer
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Auxiliary drive belt squeal Ford Fiesta 2013 post facelift

I drive a Ford Fiesta mk7.5 2013 with the stretchy auxiliary belt, some story behind it but hope someone can help. I noticed the car squealed when holding certain revs while driving, at exactly the ...
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1answer
31 views

Engine Knocking after running low on oil - Hyundai Coupe

Is this the end of my engine? I was driving on the motorway and started to hear a repeated knocking noise from the engine. 10 minutes later the oil light came on, I stopped and checked the oil. It ...
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Engine revs when driving while cold

I just got a used car and I've noticed that the engine will rev to 3000 rpm when driving it while the engine is cold. I don't step on the accelerator hard either. It doesn't matter how light I am on ...
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0answers
34 views

A strange behavior when releasing gas pedal in neutral

I've bought a new Toyota FJ Cruiser about 6 months ago. Since the early months I accidentally noticed that right after I rev-up my car engine to more than 3000 rpm in neutral or P gears and release ...
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25 views

Engine idle above normal and strange noises

My Tata Safari 2010 model LX MODEL, idle is just above the normal and strange noise observed, any advice on how to correct?
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2answers
56 views

Mixing oils of different viscocity

Hi everybody i am asking this question mostly in the context of motorcycle engine but i think the same basic principles apply on a car engine as well. I have changed my motorcycle engine oil with ~...
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0answers
20 views

Golf MK1 fuel injection model

I have a VW Golf Mark 1. After driving for a distance and switching the engine off I can't start it immediately - I have to wait for 2 to 4 minutes to get it to start. What might be the problem
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2answers
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I have a 2000 GMC Sierra 5.3L that won't start/run as of today

My truck has died on me 3 times today. When I put it in park and turn it off the doors don't unlock themselves. Then when I tried to start it up again nothing! No sounds, no lights. Then when I do get ...
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1answer
24 views

2012 Toyota Camry

I have a 2012 Camry, 4 cyl, that has a random rough idle on a light acceleration, between 30 and 60 mph. It very brief, but seems to be getting worse and more frequent. It doesn't happen when using ...
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2005 Trailblazer Firing

I have a 2005 Chevy Trailblazer. I have two cylinders that are not firing. I changes the plugs and coils and I still the same 2 cylinders are doing nothing. I changed the computer and still nothing on ...
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Opel Corsa 2006 utility Bakkie

All of a sudden my bakkie developed a noise tappet noise, I have changed the valve lifter but no better what can I look at
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1answer
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Swapping transmission 98-99 possible

I’m wondering if my 99 Bmw 528i transmission with a bad engine can be a potential doner for a 98 bmw 528i with a good engine bad transmission help so I jump on the purchase before it’s to late
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What are the common parts within the 2 and 4 stroke diesel engines?

What are the common parts within the 2 and 4 stroke diesel engines. a) Piston, valves, cylinder, fuel injector b) Crankshaft, crosshead, cylinder c) Turbocharger, piston, gudgeonpin, cylinder d) ...
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Honda CR-V chirping sound following rpms of engine

I took this recording directly over the intake manifold of a 2007 Honda CR-V with 165k miles. Sounds like it is coming from under the valve cover. Sound follows rpms of engine. What could this be? ...
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1answer
34 views

Audi A3 long cranking when engine cold

maybe someone can help me. I have bought Audi A3 tdi 1.9 2007 some months ago and few months ago car became hard to start when the engine is cold. It usually takes like 20s+ of cranking for it to ...
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0answers
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Problem with 2017 Chevy Volt Engine starting unexpectedly (Not maintenance)

My car has recently begun starting the motor any time I'm moving at low speeds and accelerate rapidly. It's as though it was trying to give me some extra power... but it's actually a bit of a ...
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2answers
38 views

checking head gasket?

I have seen people turn on the heat inside the car before buying probably checking the head gasket or over heating of the engine? And some people press the coolant hose to check it. Can someone ...
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2answers
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New motorcycle missed first service oil change by 4k km…what could be the consequences?

So I was looking to buy a used Kawasaki z250, 1 cylinder bike that has around 5k km under his belt. Everything went fine untill I discovered it didn't get its first service at 1000km. I know that ...
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2answers
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2004 Chrysler Sebring Coolant Overflow

So my dad and I replaced the thermostat, outlet housing, and radiator within the past month (all went bad at once) So ever since replacing the system, we have been noticing that as we put coolant in ...
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0answers
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Trimmer has suddenly stopped starting

It's a Poulan Pro P1500 trimmer. Carburettor was changed recently and has been cleaned. Fuel can be seen on the spark plug once it is removed. Inline spark plug tester shows that ignition coil is ...
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1answer
30 views

Driving down hill in gear with throttle engine sounds bit high

basically, i am not know much about bikes engine. i got a question when i riding bikes in downhill with lower gear the engine sounds very noisy I think engine runs more than the ideal speed, my ...
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0answers
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Hyundai Tucson Stops while driving

I have a problem with my Hyundai Tucson 2008... for two weeks now I have the engine stops during driving without warning... I took it for check and they had the injectors checked and cleaned, the fuel ...
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1answer
32 views

Toyota 4EFE Cylinder head

Why does the Toyota 4EFE engine have 3 Allen Heads in the middle of it? The Cylinder head will not remove from the block. Do these Allen Heads need to be removed to separate the cylinder head?
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Loud clattering from engine upon start-up (sometimes)

1990 Ford E150 5.0. Has been a sweet runner for the 15 yrs I've owned it. I use it as a camper and sometimes antique hauler so it sits alot with the battery disconnected (slight drain that I have not ...
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2answers
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8th Honda civic engine rotations surges

Due to bad gasoline on the highway the spark plugs are worn. There was an evacuation of the car and then it got to the mechanic. Old spark plugs (iridium) were replaced with new (iridium too), after ...
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1answer
32 views

My 1997 lancer jerks when accelerates and shakes when idling

i got a big problem, I have a 1997 Mitsubishi lancer, with a 1.6 liters engine, a 4g92 to be exact, and when Its idling it keeps shaking, the exhaust sound like there are little misfires, but no check ...
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0answers
24 views

2016 Chevy Malibu start up problems

I have a 2016 chevy Malibu with about 84,000 miles. I just bought this car from the dealership barely 2 months ago. My first issue started one morning I went out to start it and all the lights and ...