Questions tagged [diesel]

A type of internal combustion engine where ignition happens when fuel is spray at high pressure into a compressed charge of air, or the relatively heavy fuel oil used in compression-ignition engines.

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0answers
1k views

Slipping Automatic Transmission when Cold

Car: VW Touareg 2007 2.5 TDI 90,000 Miles Symptoms: Does not engage the clutch plates when cold and slips in all gears. When you take your foot off the accelerator, the revs drop down to idle while ...
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1answer
244 views

Why don't we have slow diesel engines? [closed]

I became very curious about this. Petrol engines run at higher RPMs to generate the required torque. Also, petrol burns well in a short amount of time. Diesel engines generate high torque at low ...
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560 views

Oil in the cooling system due to failed oil cooler

My 2014 Ram Eco Diesel's oil cooler failed and injected 1 to 2 quarts of oil into my cooling system. The dealer flushed the cooling system several times and replaced all hoses, oil cooler, radiator ...
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1answer
5k views

Toyota 2.0 D4-D (1CD-FTV) engine versions

After having some issues with my Toyota after some work being done on the engine I'm now facing an issue I can't find explanation to. Full story here: Toyota Avensis Verso D4-D 2002 after turbo & ...
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No injectior signals and error codes

On a Hyundai Accent CRDI 3 cylinders, there is no signal on the injectors wires during cranking but if the car is forced to start with other methods the injectors will start getting the signal and ...
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2answers
6k views

Diesel or gasoline engine for short trips? [closed]

I have often heard that diesels are preferred for longer trips and gasoline engines for shorter trips. The reason is probably cost: diesel engine costs more, but the running costs are somewhat lower ...
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680 views

Catalyst Temperature

Please refer to Catalyst Temperature PIDs (mode 01 pids 3C, 3D, 3E, 3F) for the following questions - https://en.wikipedia.org/wiki/OBD-II_PIDs#Mode_01 Q1. Is there a thumb rule that the catalyst ...
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Why do so many diesel engines have problems with aluminum oxide in the cooling systems?

I have a bad case of aluminum oxide contamination in my 98 Mazda 626's cooling system. While researching the subject, and filtration solutions, I noticed that this type of problem is very common ...
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1answer
621 views

SAAB 93 1.9 Diesel from 2007 won't crank

I live in France and we had some unusual cold weather lately, like -10°C to -15°C. Since a week ago the engine of the car won't crank. The car stood in cold weather and wasn't started for 2-3 weeks in ...
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1answer
61 views

engine started briefly then 3 loud clicks and stalled,

i have an escort van 1998 5.5 (typical escort car derived van same engine) normally a great little runner, but doesnt like 2017, replaced alternator 2 weeks ago, now i start my van and withing 5 ...
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Does BMW use piezo-injectors for all their diesel engines since N57?

I've heard rumors that since piezo-injectors in N57s proven to be unreliable, BMW switched back to solenoid-type injectors in later engines. Now I see piezo-type in B57 specs. My question is what ...
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1answer
4k views

Jetta Mk4 TDI 1.9 - Hard to start when cold

My Jetta Mk4 TDI engine is hard to start in the mornings when the temperature is down around 16° F. When you turn on the key it goes like it's going to start, but the idle remains down. I continue ...
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7answers
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What could be some reasons my old diesel Mercedes won't start?

The vehicle is a Mercedes-Benz T1 model 308D. The engine is an old Mercedes-Benz OM601.940 4-cylinder indirect injection 58 kW (79 hp) 2299 dm3 diesel engine from year 1992. It's not a turbodiesel! - ...
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3answers
9k views

Oil overfill with residue in exhaust manifold

Can overfilling your oil cause oil residue in your exhaust manifold without you breaking a ring?
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3answers
7k views

Hyundai i30, 1600 cc Difficulty starting

Hyundai i30 model 1600 cc Auto. diesel, now done 60,000 miles. About 10 months ago, I had difficulty starting the engine from cold. The temperature would have been in the 50 to 60 degree Fahrenheit ...
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1answer
601 views

What is the purpose of DEF in VW?

I don't mean this to sound like a rhetorical question. I own Volkswagen Passat TDI (which is part of VW scandal) and currently awaiting approved modification for my car. What I'm trying to do is to ...
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6answers
32k views

Why does a diesel sound like that?

My car is in the shop for a repair, and they gave me a loaner. It's a Chevy Cruze Diesel. Sitting on the driveway, my wife said, "It sounds like a truck". It does. So what exactly it is about ...
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1answer
220 views

Accent diesel car battery type

My old car battery (Exide Express) is totally dead. Now I am buying a new battery. I want to know which battery is the best battery for my car (diesel 2002 model). My car model is a Hyundai Accent ...
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2answers
1k views

Thermostat behavior and failure modes

If Zaid's excellent How can I test my thermostat? is "Thermostats 101" then this might be the beginning of "Thermostats 201"… My VW Jetta TDI (diesel) has been running cold (about one or two marks on ...
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1answer
118 views

Additives in Engine Oil

As oil is used in an engine, it ages, creating oligomers. Is there a way that we can separate these oligomers without affecting the additives in the oil???
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1answer
1k views

Clutch problems in 5th gear

I'm having strange problem. While I drive my car in 1st, 2nd, 3rd or 4th gear, everything is fine and dandy. However, when I change my gear to 5th. Car runs perfectly BUT the clutch becomes so easy to ...
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1answer
42 views

Reliable budget small diesel car - around 4-7 years old [closed]

I'm looking to buy a small budget diesel car in the UK I was wondering what are some reliable suggestions. I have a D4D Yaris at the moment that is playing up. I have been looking at the Hyundai I20, ...
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2answers
42k views

starter doesn't turn with ignition switch

I have a 2004 ford f350 diesel and some very perplexing problems: The ignition won't turn over the starter yet the lights shut off when engaged (usually means the ignition switch is ok) but also the ...
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1answer
2k views

Shifting: hard to pull out of reverse and sticks going into first and second

My 2006 diesel Jetta's manual gear shift is not working properly. It's hard to pull out of reverse and it sticks getting into first and second. After first and second shifting is simple. I'm sure it's ...
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2answers
1k views

Are there any modern diesel engines that require electricity to continue running?

I was reading this question about an owner checking the alternator by disconnecting the battery, which is an easy way to validate on a gasoline engine. The single answer assumes that the OP is ...
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3answers
115 views

What would happen when if fuel is added during the combustion process?

What would happen when more fuel is added during a combustion process? Will the time of combustion decrease or increase or stay the same?
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1answer
244 views

2004 kia sedona slow cranking

I have a 2004 diesel KIA sedona that is hard to start. It cranks really slowly. I thought it was the battery, so I had it replaced and it is still doing it. Any ideas?
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6answers
15k views

Why do Diesel engines have a higher compression ratio than gasoline engines?

Are Diesel engines constructed differently, so that they have a higher stroke volume? (longer stroke, smaller combustion chamber etc.) I know the main differences between Diesel and Gasoline engines(...
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3answers
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Why does diesel engine have redline much lower than petrol engine redline?

Why do diesel automotive engines redline at around 4500 rpm whereas petrol ones go to 6500-8000 rpm? Does this have something to do with the compression ratio?
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0answers
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Isuzu KB won't Start after an Hour

I parked my Isuzu KB Fleetside diesel bakkie (truck). An hour later, I tried to start it, but the engine wouldn't start. It turns on, but the starter does not crank. The lights turn on, but the ...
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2answers
6k views

Diesel engine won't start when hot

My Ford forgo 2012 diesel refuses to start after driving long distances, but it usually starts well when it is cold. What could be the problem?
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1answer
735 views

Storing manual transmission diesel car for 4-6 months, what 'else'

I don't have anybody who can run the car in between, or just start etc., so here is what I plan to do Put lot of silica gel inside Cover the car Remove battery Top up fuel (Diesel car) Pump up the ...
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1answer
622 views

Starting a diesel tractor

I have a diesel tractor with a generator. After sitting for a long period the battery was low so I used a portable jumper battery but mistakenly hooked up the cables in reverse. This caused smoke to ...
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1answer
3k views

Lag at accelerating and/or loss of power

This may be a long shot. So, I have a Renault Megane 2, with a 2.0l Diesel engine with theoretical 150hp and 340Nm of torque. The thing that worries me is that when I push the pedal, it just takes ...
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1answer
2k views

Stuck brake overheating transmission?

7.3 PSD - Ford F350 with the 4R100 AutoTrannny. Is it plausible / even common for a seized brake / caliper to cause a tranny to overheat? I've never had this occur previously on any vehicle, much ...
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1answer
10k views

Will a small engine oil overfill damage the engine or turbo?

I own Suzuki Swift diesel, the engine is 1248cc Fiat sourced diesel engine with a small FGT turbocharger. I overfilled the engine with about 1/2 litre too much engine oil and drove at high speeds on ...
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1answer
656 views

What Color should Oil Be in 2006 Duramax after Oil Change

I just had the oil changed in my 2006 GMC 2500HD Duramax diesel, my truck has 56,000. miles on it. The oil look on the dip stick looks really black! I feel like it wasn't changed at all. What ...
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761 views

BMW cranking but won't start

My BMW is turning over but won't start, fuel pressure is as it should and the there is no faults showing except for 4 glow plug on, but I'm told this shouldn't stop the car from starting, any ideas ...
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1answer
378 views

What is the loud clanking sound at low RPM (video included)

At low RPM, which occurs in 3 different scenarios (starting, shut down, and clutch-out), the noise I am hearing comes from the engine compartment. The van in question is a 2003 Kia Pregio diesel van. ...
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0answers
235 views

Running in oil a for light diesel engine (Japanese, Toyota 3L)?

What would you use as a running in (break-in) oil for this engine? I have this engine, and it has just been reconditioned, new pistons, conrods, crank and bearings.
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2answers
6k views

How to manually turn the flex plate on an Automatic Transmission

So, I've been having trouble starting my 02 - Diesel Excursion 4WD (7.3 PSD with 4R100 tranny). I get the squealing/grinding sound of a starter/flexplate with missing teeth. I replaced the starter ...
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2answers
3k views

keep getting air in the fuel line

I put 17 liters of petrol in my Renault kangaroo it already had 8 liters of diesel in it had it drained by mechanic put 12 liters diesel in it took a while but did start and run well until I got 3 ...
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3answers
8k views

2004 powerstroke white smoke now no start

I have been trying to fix my truck for a while so long story. I need help bought a 2004 power stroke with 100k miles. It ran well for 15k miles then started having low power for first few minutes to ...
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1answer
810 views

Engine oil light stays on for 4-5 seconds during cold start

I own Suzuki swift diesel. When I start the car in morning for the first time in day, the engine oil light stays on for 4-5 seconds after engine has started and then goes off and never comes back ...
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1answer
480 views

Volvo S40 - problem at ~2,000 RPM

I have a Volvo S40 (diesel) and sometimes I have a problem around ~2,000 RPM: it is something like a limp (or you could say that the car hiccups) Strangely, when my brother drives the car, he does ...
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3answers
465 views

1983 Mercedes Diesel - Loses Power Over Time

I picked up this car as a gift, and on day one drove it the 370+ miles home. After the first 160 miles or so I noticed that the car was struggling to maintain highway speeds. So I pulled over into a ...
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2answers
1k views

How does water/meth injection on a diesel work

My question is how does water/meth injection work? How does the idea of spraying this mixture into your fuel system lower EGT's and also provide more HP? What exactly does this mixture do to the fuel ...
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2answers
1k views

VW Bora (1.9 L TDI) - Misfire on cylinder 2

It starts every time and the engine shakes badly in higher gears. However, if I turn the engine on and off MANY times it will eventually kick back in and run as it should. So frustrating. Any ...
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2answers
5k views

Diesel Engine Runaway - What is it?

I was watching some youtube videos and diesel engine runaway videos started to pop up where apparently the diesel engine runs out of control until it destroys itself. My Question What is diesel ...
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2answers
634 views

What is a “dummy injector” used for?

I stumbled upon this TDI Dummy Injector yesterday. Nice photo, but without any explanation of what the purpose of a "dummy injector" is, let alone why one would spend nearly $400 US to be in ...

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