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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12
votes
7answers
91k views

Is it normal for the oil to be dark in color right after an “oil change” in a 10-year old diesel car?

I took my 2002 Jetta TDI wagon to a neighborhood shop about 10 miles, 24 hours ago. They supposedly changed the oil, but the color is very dark, almost black. Definitely not light-colored/transparent. ...
14
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7answers
4k views

Is it possible for a diesel engine computer to detect (and prevent) a runaway condition?

Although diesel runaway is not so common... ... the consequences are spectacularly catastrophic. On old-school engines, I can understand that there isn't much you can do about it except try to cut ...
3
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4answers
78k views

What is causing air in my fuel line?

I have a 2003 Jetta TDI. I drove it last night with no problem. This morning I cannot start the car. I popped the hood, and discovered air in the fuel line between the fuel filter and injection ...
1
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1answer
174 views

Turbo info for 2006 Jeep KJ Liberty CRD diesel

Have a Jeep KJ, the 2006 Liberty CRD with the 2.8L turbo diesel. It fails a smog test with a P0299 error code which the kindly person at DEQ said was a turbo bearing seal failure, therefore, planning ...
9
votes
1answer
20k views

My car's diesel exhaust smells really bad

First of all let me say I apparently have no exhaust leak. For a long time I've been asking myself how was it possible that the exhaust of my car smells so bad. It does it when in the morning, I ...
1
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2answers
114 views

Chip can affect DPF?

I have a Honda CrV Diesel 2.2L. The DPF light turned on and i lost power. The car has chip. I have twice my car regenerate then I get back the power of my car. Then after 1 week the DPF turn back on. ...
0
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1answer
675 views

Chiptuning for a car with DPF (Diesel Particulate Filter) is a bad idea?

I know that it is possible to disable DPF (Diesel Particulate Filter). I'm wondering how bad it could be to leave DPF (Diesel Particulate Filter) functioning and add a chip to a car?
2
votes
0answers
36 views

What is this connection on the air intake right before the turbo?

This is the engine bay of a Citroën C5. I would like to know what the connection indicated by the red square is for. I removed the air duct once to check the EGR valve and there was a little oil ...
1
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1answer
26 views

2005 F250 Turbo Diesel Starts Rough

When it starts it takes a few cranks to get going, and it overall starts pretty rough. I was told that I could turn the key almost to ignition until the humming stops x3 and then start it to stop this ...
8
votes
7answers
7k views

Why does a petrol engine need to maintain an air-fuel ratio, while a diesel engine doesn't?

This simple question has been bugging me for a while. The amount of fuel injected into a petrol engine is calculated according to the amount of air entering through the throttle valve (as measured by ...
1
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1answer
73 views

Trying to understand the diesel cycle

I understand that in a diesel engine, the fuel is injected after the air has been compressed, while in a gasoline engine, it is injected while the air is being draw in. But, then there are a few ...
1
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1answer
6k views

Convert diesel engine to petrol (gasoline)

One of my reasons for buying a diesel was environmental -- I thought it would damage the planet less. It seems I was mistaken. But could a diesel engine be converted to petrol (gasoline)? Obviously ...
1
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1answer
132 views

Will deleting the gear-driven pump for power steering and vacuum on this diesel engine put the camshaft journal at risk of failure?

I took a 1989 Dodge Cummins diesel engine out of a pickup truck and I’m using the engine as a stationary power source. The combined power steering + vacuum pump has developed an engine oil leak, and ...
-1
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2answers
194 views

What is the best TurboCharger dump Pipe Length for a turbodiesel engine? [closed]

What is the best length for Turbocharger Dump Pipe. I have a Force Gurkha with a 2.6 litre diesel engine. I removed the second CAT Converter and Muffler from the exhaust. So now it has a CAT and then ...
0
votes
1answer
71 views

Compression ignition in petrol engines

First and foremost, this is not a question about reparing or maintenance. I'm familiar with how both petrol and diesel engines work, and I have a question about (possibly) making petrol engines more ...
3
votes
4answers
184 views

Why do worn diesels emit black smoke?

I have often noticed that on the road, whenever a heavy diesel accelerates, it emits a huge cloud of black smoke. If this happens in front of me, I put the air recirculation mode on. This typically ...
1
vote
1answer
365 views

Strange oscillating sound when decelerating

I got a VW New Beetle 2000 with a 1.9 TDI ALH engine. The gearbox is a 02J/EBJ. The car is 19 years old and odo shows 232400km. There is a strange sound for a very very long time, it was already the ...
2
votes
1answer
141 views

How Regularly Should Glow Plugs Need Replacing

How long should glow plugs last in a typical diesel engine? And what might cause them to fail early? I ask because my 20 year-old Ford Courier (an Australian rebadging of the Mazda B-series) needs a ...
1
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1answer
466 views

Lack of power after turbo replaced

In my 2005 Toyota Previa D4D T3 (2.0 litre diesel), the turbo had blown just over a year ago. I took it to garage who replaced the turbo and, generally, the car has been running fine except for one ...
1
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2answers
226 views

High rev in low gear on a diesel engine

just to put this question into perspective, the car I'm talking about is a 2007 Alfa Romeo 159 1.9l jtdm turbodiesel. So, I was driving it and I needed a bit of life out of the engine, so to get the ...
0
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2answers
63 views

Shock absorber anti sway bar support

2011 Nissan Xtrail T31 Diesel. The support that holds the sway bar link looks like this: https://i.imgur.com/vlZTJLz.jpg. Can this be welded? Or should I buy a new set of shock absorbers? How ...
0
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0answers
65 views

Coolant level fluctuation

2011 Nissan Xtrail, 2L diesel, 160.000 km. I noticed that while driving, coolant level drops below minimum mark. If i let the engine cool down, level rises to the same mark, almost to max. What ...
1
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1answer
31 views

Very brief loss of power and puff of smoke, diesel engine

I have recently purchased a 2004 Jaguar X type 2l diesel. When driving at steady speed on the motorway, there are frequent (about 1 every 2 minutes), brief (fraction of a second) and slight (just ...
2
votes
1answer
505 views

Diesel leak by fuel injector on Volvo V50 2007

So for a time now there has been diesel undeneath the fuel injectors. Could this be a simple o-ring seal gone rogue? Or a destroyed copper washer? There seems to be a little puddle of diesel by ...
5
votes
5answers
20k views

RPM bouncing when in idle, especially when AC in switched on

I have a diesel common-rail 1.5l engined car. Lately I am facing an issue where the RPM needle is bouncing in the tachometer when the car is idling. The normal idling RPM is around 820. When idling, I ...
0
votes
1answer
36 views

Why isn't my car showing a small fuel input?

I just used a fuel pump to add 3.8 liters of diesel to my car (£5) from a local Jet fuel station. However my car's analogue fuel guage hasn't moved in the slightest. I have added similar amounts ...
14
votes
4answers
47k views

What's the cause of Diesels' typical clatter noise?

I guess it's related to their basically running off knocking, but if I were to explain it to someone like this, it wouldn't convince me neither. [Edit] From http://www.ford-trucks.com/forums/369700-...
2
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0answers
26 views

Not starting, just clicking [duplicate]

I have a 2002 diesel Renault Clio. Everything was working fine the day before, but now it will not start. It makes a click noise then nothing. The lights/radio work. Changed the starter motor ...
1
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1answer
128 views

My truck failed emissions because they couldn't find the EGR

I just took my 2011 GMC Silverado 2500 w/Duramax in for an emissions test in Utah County. They do more than just emissions test. They look to make sure all the elements of the emissions system are in ...
2
votes
2answers
513 views

intermittent slow starter cranking on saab 9-3 diesel

Sometimes , usually after a long run the starter turns very slowly like it has a flat battery. If I am lucky turning the key again a few times it will turn the engine at normal speed and it starts. It ...
1
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0answers
50 views

2011 Jeep Patriot CRD 2.2 - engine does not start // P0685 error

I have a 2011 Jeep Patriot CRD 2.2 (Euro-Model) that does not start anymore. First boot-up and preheating is normal but when I turn the key further for ignition nothing happens, no sound no movement, ...
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0answers
18 views

2007 F250 Super duty Powerstroke 6.0 crank no start

Ok I don't know Jack about diesel, but i am learning as I go! It has been running out of fuel when the DTE is at 65-58 miles and its keeps climbing. When i first got the truck a year ago it ran out at ...
1
vote
1answer
117 views

Is 4000 RPM a normal rpm for a diesel school bus at 55 mph?

I have a Thomas 1991 school bus (36K gvwr) with a CAT 3116 engine and an Allison MT 643 transmission. I purchased it quite recently and when driving it on the highway, the engine RPMs are at 4000 ...
1
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1answer
48 views

Suitable grade oil

i am going to do a service on my work car(vw caddy 1.9 sdi 1999). My question is... What engine oil grade should i use 10w40 or 15 w40. In my country during the summer the temperature goes up to 30 ...
5
votes
3answers
8k views

Possible EGR problem on Fiat Idea Multijet 1.3 Diesel

I've been having issues with my 56 plate Fiat Idea for a while now. It seems to drive normally up to about 2500-3000 rpm where the car lurches a little, as though i shifted down a gear, the MIL light ...
2
votes
2answers
745 views

XC90 D5 Black smoke

I have a 163hp XC90 D5. I've noticed lots of black smoke under hard acceleration very similar to an issue 'Caius Jard' had; "there's a periodic hesitation in the power delivery - again going up that ...
4
votes
1answer
7k views

2000 VW Golf TDi (Mk. 4) grey smoke from exhaust before engine has warmed up

I have had my Golf for 8 years. It’s had good maintenance and a the record is kept by my dad. It’s just passed its MOT (Ministry of Transportation) test, and the mechanic mentioned that the tappets ...
1
vote
1answer
764 views

BMW E90 318d oil leak

I've recently replaced my splash shield and I found some oil spots on the oil pan. I've tried to look for the highest point where I could find leaked oil and it seemed to be near the oil filter ...
0
votes
0answers
545 views

Slight vibrations and strange feeling in pedals (clutch and gas) in stop and go traffic

The problem is as follows: when driving in stop and go traffic, at some point I can feel some slight (most passengers are not able to feel them) vibrations in the cabin, accompanied by a "scratchy" ...
0
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0answers
24 views

Audi A6 2016 sometimes high rpm and not running right

Recently I've purchased Audi A6 3.0TDI 272hp 2016 and sometimes the car starts at 800rpms and sometimes slightly above that - let say 850. The car runs fine when it is keeping 800 rpms at idle, ...
7
votes
1answer
9k views

Ford Focus engine cuts out at 3000+ RPM

I should provide a little background to this issue as I believe the two are most likely related. The car is a Ford Focus 2008 1.6 TDCi Diesel (UK) which this year has had a brand new battery and ...
1
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0answers
19 views

Polo 9n SDI 2002

Help :-) My son has bout a polo 9n sdi with 120000 miles on. It was a bit smokey apperantly when he bought it. I now have it here on my drive and it smokes on idle and has a neat smoke screen trick ...
7
votes
1answer
903 views

Volvo 2.0D engine “self-oscillates” after changing timing belt and adjusting fuel-injectors

I recently had the timing belt and water pump changed on my Volvo s40 (2006 2.0D diesel). The mechanic also cleaned and adjusted the injectors. After the service I noticed that att some rpms the ...
1
vote
1answer
51 views

How to start a 1991 Thomas School Bus that cranks well, but doesn't start

I purchased the above vehicle for conversion and at first it didn't start at all due to starter issues. At this point it cranked, but cranked weakly. So I replaced the starter about a month ago and it ...
0
votes
2answers
1k views

Should diesels in general be run at higher rpm than gasoline cars?

I have always had gasoline cars, for which it appears (based on advice from other motorists and from fuel consumption meter), that it is advisable in general to run them between 1500-2000rpm. Going ...
0
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0answers
21 views

My 3 litre diesel patrol revs increase from 750 to 1100 when I idle after a drive what would be the problem please

What would cause my 3 litre diesel to increase revs from 750 to 1100 when idling after a drive
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0answers
70 views

Kindly please help my Jetta 4 tdi not starting after engine overhaul, showing the error codes below

My Jetta 4 tdi not starting showing those error codes
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votes
0answers
29 views

Diesel truck at 40Mph huge “stall” and then kick

So I have an 01 Chevy Silverado and i have a little strip that i like to see how fast my truck can go 0-60. The problem is that when I'm accelerating, at around 40mph my truck "stalls"(like im pushing ...
2
votes
2answers
705 views

KIA Sedona 2003 Diesel Intercooler Turbo Low Fuel Mileage

I have a 2003 a Kia Sedona turbo diesel 2.9L, with intercooler. I am getting 5 km per liter of diesel consumed. I also have to do oil change and ATF replacement. I got the car 3 weeks ago. What are ...
0
votes
0answers
355 views

Fuel rail pressure low on common rail diesel

The engine can suddenly cut out when driving and either go into safe mode or stop altogether. Have changed pressure sensor, pressure regulator and fuel filter with no joy. Sometimes engine won't start ...

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