Questions tagged [engine]

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

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38 views

Best way to clean corrosion off exhaust manifold mating surface on engine side?

It’s an aluminum block and there are some high spots of white powdery corrosion. I was able to gently scrape most off using a (dull) metal paint scraper and a green scour pad, but there are some ...
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Car stalls in flood but now starts, does that mean the engine is okay?

I drove my car (Fiat Panda Active) through a flood that was deeper than I expected, it stalled, I restarted it again, it struggled once more when I got out of the flood but kept going. I then had the ...
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1answer
29 views

Mazda 6 V6 auto rough misfiring – fuel flow problem?

2007 Mazda 6 3.0L V6 automatic with ~80k miles: Runs "rough," especially while stopped in drive – feels like what I imagine an occasional cylinder misfire would feel like, producing a sort ...
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Engine replacement for my 2001 V20 XC (B5244T3)

Is it possible to replace my B5244T3 (2001 V70 XC) engine with the engines below; B5254T4 (2004–2007 Volvo S60 R or V70 R) B5254T12 (2014–2016 Volvo XC70) B5254T14 (2013–2016 V60 T5 or 2016 XC70) ...
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Additional air injection [closed]

In addition to the topic of air injection. Adding a air injector upstream of the fuel injectors at 15-20 psi Combined with the natural air intake would give better atomization and more hp. This is a ...
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41 views

Should I replace wiring harness? If yes, how to do it?

My Hyundai Tucson 2013's fog light is not working. Also a bulb in cabin which is supposed to stay steady is blinking. I suspect this could be because of the voltage drops and electrical faults. I ...
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Sort of a knock when starting the car only once

I have an Audi A3 2007 2.0 tdi, the oil still valable for more than 4000km to be changed, today, since the morning when i start the car i hear a single knock in the bottom, the knock happens only one ...
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hyundai getz 1.3 only accept 100 RON fuel

I recently bought a hyundai getz 1.3 petrol car and its only "accept" a 100 RON fuel. I have tried 95 RON whitch is the most common fuel in my country and the check engine lights up. If the ...
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Should I accelerate when start the deisel engine

When starting a deisel engine vehicle in the morning that was manufactured in 90's should I give accelerate. Some are telling do not accelerate when starting the vehicle start of the day. Give some ...
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1answer
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I need help with 2009 Buick Lucerne- Engine and Oil

I have a 2009 Buick Lucerne. I have recently realized it has been dripping oil. Thought it was another car and it is not a lot of oil. Anyway, this prompted me to check the oil level. I usually do ...
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1answer
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Knocking right underneath the valve cover?

My engine was starting to make a loud knocking noise, so what I did, I turn the engine off, and I checked the oil, and the oil dipstick did not even register no oil at all? So I turned the engine on, ...
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ML 350 has 1 second strange noise right after cold start

I have Mercedes ML350 (2011) and this winter I noticed that it started making weird noise right after cold start, I'm almost sure that this isn't timing chain (I know how broken timing chain sounds). ...
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Petrol car engine won't start though it will turn over

I imagine there are many instances of the correct answer to my question here, but I have little for diagnosis besides the engine sound. I have a 1.4l petrol Toyota Corolla 2001 model. The car was ...
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1answer
25 views

Ecoboost 3.5L Twin-Turbo reliability [closed]

I'm looking for a $15,000 SUV to pull my 4,000-lb travel trailer, and I really like the Ford Explorer. I've been looking at some used 2014 Ford Explorer Sport vehicles with ~100,000-125,000 miles on ...
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Coolant level fluctuates too much

I have a problem with the coolant level from my car (Renault 1.5 dCI engine). It fluctuates too much. I left home with the coolant level at the minimum mark. After approximately 10 minutes I stopped ...
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2answers
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Knocking under load on first gear

I have this issue.. I already asked on FordOwnersClub, but I feel like here I might have a better chance to sort it out. I bought a Ford Focus mk3 2011 with 1.6 ecoboost 134kW engine with 90k km. My ...
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Oil change and no oil question

We took our Kia Optima Hybrid (2014) to a shop for an oil change. We've had the car nearly three years, no engine issues at all. Normally, my husband and his dad handle the oil changes, but we were ...
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1answer
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New Kia Stonic, vibrations and clutch noises

I have a new Kia Stonic 2020 1.0L T-GDi ISG , got it on July and 8500km on it It already had an issue with miscalibrated hill assist sensor (already fixed) so I wonder if it has other issues ... what ...
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Auto acceleration Kawasaki rouser 135LS

After starting my motor it’s auto acceleration for a while and then it came to back to normal after That only I can ride Is that any problem?
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Finding TDC with a screwdriver.. what if screwdriver gets stuck?

I was performing a leak down test on a chevy vortec 4.3L V6. In order to find TDC on the #3 cylinder, I stuck a screwdriver down the spark plug hole and slowly turned the crank pulley with a wrench. ...
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1answer
44 views

How does a OBD II misfire detection monitor know “exactly” which cylinder is misfiring?

I do know that magnetic pick-up coils are used to detect crankshaft position and these sensors are used to tell which cylinder is misfiring. These magnetic pick-coils do not produce a smooth & ...
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2004 Nissan Sentra white smoke from engine then radiator busts

I just got 2004 Nissan Sentra had been setting up for about year now. I was told at the time only thing that could be wrong with it was the cam shaft position sensor, and possibly the catalytic ...
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How to inspect a brand new motorcycle before buying from showroom?

When you decide to buy a brand new bike from an official Suzuki, Kawasaki or Yamaha showroom, how can you inspect to be sure of that the bike is brand new with zero mileage? What if the bike has been ...
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1answer
62 views

What do you think of these spark plugs?

Still trying to diagnose an erratic positive fuel trims. Next step will be making sure that the lean condition i have is caused by less fuel delivered or weak spark not a vacuum leak. I pulled spark ...
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1answer
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Oil leak on engine top

So I have a 07 Subaru Impreza wagon 2.5. It’s seems to have oil on top of engine behind power steering pump. It’s definitely oil and not tranny fluid. I checked oil pressure switch and it’s not coming ...
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Why does my car have a knocking sound but i have oil in it?

my car is over half way full of oil, but it has a knocking sound. I'm not sure if its from the oil or what but it knocks faster as I rev the engine or speed up. Can someone please help me? Thanks
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2013 Mazda 3 Engine not turning off while pushing the start/stop button

My 2013 Mazda 3 does not turn off the engine while pressing the start/stop button. If I continuously press the start/stop button for three or four times then engine stops and goes to the acc mode. ...
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Is this Purge valve ticking sound normal? Youtube video

It is 2001 Corolla 1.8 engine. I'm still in the process of diagnosing an intermittent P0171 code. I posted a video in other post and user Carguy was very helpful and he mentioned that this ticking ...
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1answer
52 views

VW Golf 5 FSI Jerks When Driving

Please help. I have recently serviced my VW Golf 5 with air cleaner,oil filter,fuel filter and plugs but the car still jerks most times when driving. I had it diagonised and gave me error codes P1403 ...
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1answer
43 views

Misfire at idle

I have a 97 Montero sport with 2.5k miles on the engine(it’s remanufactured). I’ve been chasing a p0305 for 2 years but can’t find the problem. I know I have a possible vacuum leak since the fuel ...
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1answer
48 views

Audi 2.0T Tapping Noise When Accelerating (Up to 3000 RPM only)

Car: 2013 Audi A4 2.0 4-Cyl Turbocharged AWD Mileage: 71,457 miles Video Clip: https://youtu.be/HX1wXk84wq8 The car is exhibiting a tapping noise when the engine is under load at lower RPMs. Test ...
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2010 Dodge Charger Base Model won't go over 25mph+ (P0370)

Having some troubles with my vehicle. It will not go over 25+mph and it is very choppy. Bought a code reader and it comes back with P0370. 2010 Dodge Charger base model
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I am looking for cylinder head bolt tightening torque specs for a Benz OM651

I am currently working on a Benz Vito bus engine and cannot find the engine tightening torques. I have search all over the web for this information with no luck. Thanks in advanced.
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1answer
91 views

Is this internal engine component cracked?

I was inspecting my engine (1.6L N15 Pulsar) yesterday and I noticed some moisture on the rocker cover coming from the oil fill cap. I unscrewed it and it looked like it was allowing some fluid out. I'...
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1answer
60 views

Revs go up when I depress clutch pedal

As I was driving my 2001 Mazda Tribute today I was pulling up to a red light and I depressed the clutch pedal as I came to a stop. Once the clutch pedal was depressed the revs suddenly shot up to ...
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1answer
60 views

Should I re-build my engine?

12 months ago, I bought a 1999 Mitsubishi Delica with a 4m40 2.8TD engine (diesel). The vehicle itself has done 120,000 miles and runs very well. There is a very slight oil leak somewhere. There is ...
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1answer
56 views

Unknown pink car fluid running low

When I opened the car hood, I see a pink fluid running low, I am not quite sure what the liquid is, and would I be able to add it by myself? What is this pink fluid? And would I be able to add it by ...
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1answer
35 views

What is the black box between my air filter housing and throttle body?

I recently purchased a 2001 Dodge Dakota 4.7L SOHC. I want to start working on my own vehicles more. But I have very little experience and this question reflects that. Please correct me if I get ...
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Engine Oil Change Duration regarding with respect to Engine Oil Top Up

We all know that engine oil are of 3 types namely 1. Mineral Oil 2. Semi-Synthetic Oil 3. Synthetic Oil. Right. And their drain intervals 2000-2500 kms, 3000-4000 kms, After 6000 kms correspondingly. ...
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Why Long Term Fuel Trims Remains in Negative?

Dear Experts here im attaching log of 1SZ-FE, 1.0L engine for your kind consideration, please advice why my LTFT remains in -ive though MAF, Intake Air Temp sensor, ECT sensor and O2 sensor is working ...
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1answer
39 views

Why my long fuel trim readings are higher than short trim ones?

My understanding of long trim vs short one is that the short trim readings will adjust the long trim after awhile right? For example my short trim readings are in the -5 to positive 7% max while the ...
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2013 Polo Vivo 1.6 overheating warning light

Hi all I'm hoping someone can help me with my car that keeps giving me the engine overheating warning light. The car was in a minor accident from behind and ever since then the warning light comes on ...
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1answer
59 views

What is typically involved to repair a internal combustion engine that has a cylinder misfiring?

I have a vehicle with a cylinder misfiring (according to my OBD-II code reader). I have decided to have a mechanic repair it, as I have never performed a similar motor vehicle repair. Note that the ...
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1answer
26 views

Where can I find information about car PIDs?

i'm doing a research and i can't find voltage information from the car sensors, where do you find such information? finding the voltage range would help a lot.
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Motorcycle not starting unless I force it into first gear, but the battery itself is ok

I am having a weird issue with my Kawasaki Z650 2019, as per title. It used to start when I just pulled the clutch, now it needs be forced into first gear in order for it to start (while holding down ...
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My 99 F150 RWD has the P0171 code for its running lean any idea where to start

I got the tool to see why my engine light is on and is running lean. It returns a P0171 code. Any idea where to start diagnosing this?
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What engine are comparable to swap in a Kia Sorento 2.5l 2009

Oil pump has buggered my engine so looking for a replacement. Have been told Hyundai would swap, but clueless as what year model year ect. Any help would be appreciated. Thanks. My is 2009
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Engine/Clutch/Powertrain

When my engine is in neutral it reaches red line with no problem. It also has power in first and second gear. The problem happens when i am driving up a long incline, I will be in third or fourth gear ...
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Peugeot 206 2003 engine overheating STOP light

I bought my 2003 Peugeot 206 second hand from a private car dealer about 4 months ago and everything seemed ok, except for the exhaust pipe appearing to be tied with plastic zip locks. About a month ...
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Is it a good idea to switch to 5W-40 engine oil from 5W-30 after hitting 120k miles?

I've got a 2011 European-spec VW Golf Mk6 Variant with a 2.0 TDI engine (CFHC engine code, Euro 5 emissions standard, equipped with a DPF; no AdBlue, no 4Motion) with almost 200.000 km (roughly 120k ...

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