29
votes
What happened to my car?
Being a diesel and that the engine ran for a minute with the ignition turned off, makes it highly likely that you experienced diesel runaway.
During normal operation, diesel is used as fuel for the ...
- 24.9k
12
votes
Accepted
Scraping sound in new small engine
I actually decided to go ahead and just tear into it no matter the answer and can make the following statements:
Bore and piston rings were absolutely immaculate and there was no scraping whatsoever
...
- 621
11
votes
VW Polo Engine Oil Light Blinking on hill
I have a VW TDI diesel, but an earlier model.
Your oil light comes on when there is a gradient but not because of a gradient. A mechanic who blames the tilt of the ground for the light on the dash ...
- 5,510
8
votes
What preparations to make before changing oil on old neglected tractor diesel engine
The engine in your tractor should hold are 6.5 quarts (6.2L) of 15W-40 oil. That amount should fit in most oil collection pans.
If you want to use kitty litter as oil clean up, that's a great idea. I'...
- 153k
5
votes
can i use api CJ-4/SN in a gasoline car?
Your annual temperature range is -10C to 35C.
The oil viscosity of 15W-40 means that the oil is no thicker than straight SAE 15 oil at winter temperatures and no thinner than SAE 40 weight oil at 100C....
- 5,510
5
votes
How is this diesel engine stalling pattern caused by dirty air filter?
I can’t see this being the issue. If the previous day the vehicle was driving fine, then it must have been getting enough air into the engine to support the fuel that was being injected as required ...
- 24.9k
3
votes
Diesel mixed with petrol
Diesel fuel does not directly harm the materials and equipment in a petrol engine, but adding diesel to petrol will dramatically lower the octane rating.
Diesel fuel has a cetane rating which is ...
- 5,510
2
votes
Diesel engine problems only in summer
Use your scan tool to check the coolant temperature when the engine is cold and when it is hot. If either temperature is not plausible, you may need a new coolant temperature sensor. If your car also ...
- 5,510
2
votes
Accepted
Why VVT is never used in diesels?
The "traditional" impetus for VVT - providing suitable valve timing to support the different air demands across a wide range of engine speeds (and therefore not compromising performance for ...
- 9,989
2
votes
can i use api CJ-4/SN in a gasoline car?
API SN is the category for gasoline (petrol) engines. According to API website
SN is as follows:
For 2020 and older automotive engines
SM is as follows:
For 2010 and older automotive engines
SL is ...
- 153k
1
vote
Accepted
Insignia B (MK2 2017) error code P0073 and engine light on
The ambient air temperature sensor is the one that reads the temperature outside the car, it's used by the air conditioning system. It's safe to drive your car with this problem, although your AC may ...
- 16.2k
1
vote
Mazda 3 2015 2.2L diesel shakes each time when started up
Ask your mechanic to check the engine mounts and replace them if they are worn. Loose or worn engine mounts will cause a diesel engine to shake vigorously when it starts or stops.
Diesel engines have ...
- 5,510
1
vote
Why VVT is never used in diesels?
I don't know for sure, but I'll give you my educated guess as to why they don't use VVT on diesel engines.
The purpose of VVT on gasoline is to provide better low end torque and then switch over (at ...
- 153k
1
vote
Can deposits on glow plugs be used to diagnose engine problems?
Normally not, people are way too afraid to break them during removal. Since the specialty tool supliers catalogues are littered with "engine xyz glow plug extraction tools" they might have a ...
- 8,448
1
vote
Accepted
Peugeot 207 sporadic, sudden and very short loss of power
To give some closure here: the issue started manifesting a lot more often so I tried my luck once more at the mechanic.
And lucky I was: there was a fault logged (which interestingly, didn't appear on ...
- 163
1
vote
Diesel slow crank after sitting through winter
I think you have a bad battery. Leaving a car to sit for months should not harm a starter, but it can definitely kill a battery.
I was hoping for a more precise answer to my comment about battery ...
- 5,510
1
vote
VW Polo Engine Oil Light Blinking on hill
Obviously, first, check your oil level (regardless of having checked it earlier in the day). You might have developed a serious leak and be minutes away from wrecking the engine. But assuming the oil ...
- 201
1
vote
Vw Passat B8 inner taillight replacement
Using a flashlight (torch) look inside the trunk (boot) in the vicinity of the tail light assembly to find an access panel in the fabric liner. These are usually held in place with Velcro and no tools ...
- 5,510
1
vote
2004 Powerstroke diesel no power in gear
under load I can’t get any rpm’s
Sort of like you're pressing on the brake pedal while gunning the engine?
Are the brakes frozen / rusted in place? See if you can get the vehicle to move at all. You ...
- 5,510
1
vote
Accepted
Link between malfunctioning throttle plate and particulate filter
I don't think there's a plausible link between a malfunctioning throttle plate and the clogged DPF because no matter what the throttle plate is doing, the MAF is still continuously measuring the air ...
- 5,510
1
vote
Accepted
Exhaust gas composition from London buses
While biodiesel may make up a different smell of diesel exhaust, my guess is meeting stringent exhaust pollution regulations requires selective catalytic reduction (SCR), diesel particulate filter (...
- 956
1
vote
Exhaust gas composition from London buses
I'm going to go out on a limb and suggest what you are smelling is biodiesel. According to the London Government website, it says:
Around a third of London's 9,500 buses are running on 20 per cent ...
- 153k
1
vote
Why does a petrol engine need to maintain an air-fuel ratio, while a diesel engine doesn't?
No the diesel is regulated differently but not without proportions. modern cars work similarly in that an air to fuel ratio is calculated based on the cylinder combustion needs. Due to the hotter and ...
- 117
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