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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6
votes
2answers
906 views

Can I use a CNC machine or waterjet to make an adapter plate to adapt a 5 speed transmission to a rare, obsolete engine?

I am the sad, proud owner of a Nissan SD33T (Diesel), mated to a 4 speed T-19. The power this engine outputs (101HP, 160#/TQ stock) means it struggles on the highway, and I don't want to sacrifice my ...
6
votes
1answer
803 views

What is DEF and how is it used?

I keep hearing about DEF ... what is it and why is it used in conjunction with diesel engines? I know it is a more recent thing (last decade), but don't know much about it.
6
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1answer
6k views

Can diesel engine be harmed as easily as gasoline engine by over-revving?

There is an excellent Q&A about why diesel engines have lower redline RPMs (about 4500 RPM) than gasoline engines (about 6500 RPM). The reason is related to the combustion of diesel fuel. However,...
6
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4answers
12k views

Troubleshooting low boost pressure

A Tata with a Quadrajet BS IV (90 ps) diesel engine was brought in for low power. When starting the engine in a no load condition the turbo boost pressure is 950 mBar. When the engine accelerates the ...
6
votes
2answers
642 views

What does this device on a 1985 Mercury Lynx/Ford Export Diesel do?

I have a 1985 Mercury Lynx (Ford Escort) Diesel 4 cylinder. The device shown in the pictures -- below the starter -- has a hose connecting it to the radiator. There is another hose that is connected ...
6
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2answers
5k 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 ...
6
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2answers
9k views

Diesel engine starting / first start of the day problems

I’m new to the forum, and no mechanic, so please be kind! Vehicle in question is a 1999 T35 Renault Master 2.5 D. It has had first start issues since I’ve owned it, with white smoke (un-burnt fuel ...
6
votes
1answer
473 views

Has wrong glow plug damaged piston?

I recently had the engine on my VW Golf TDI replaced with a reconditioned engine. After having start up problems for a while, I asked an independent mechanic to have a look. He found that one of the ...
6
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1answer
12k views

Re-programming injection pump on French Ford Focus TDCi

I replaced the engine on my 2003 Ford Focus (French TDCi) and I plugged it to clear the error codes. Now it starts ok but stops after 10 minutes. I read that when a new injection pump is installed, ...
6
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1answer
2k views

Fuel meets rubber

When working with on (diesel) fuel system components the instructions often advise keeping fuel off of rubber parts or cleaning it up promptly if fuel gets on them. OK, I can get behind that, but what ...
6
votes
1answer
116 views

Why is there no drop-in biogasoline like there is drop-in biodiesel (e.g. NEXBTL)?

I have always wondered why there is no drop-in biogasoline like there is drop-in biodiesel. For example, NEXBTL by Neste can be run at 100% mixture in conventional diesel engines. It is different from ...
6
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1answer
886 views

Volvo S80 II 2.4 D5 DPF (Diesel Particulate Filter) regeneration conditions

What are the conditions required for the DPF (Diesel Particulate Filter) regeneration? Is it only exhaust temperature or speed and RPM also? I'm wondering if DPF can regenerate while car is at ...
5
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2answers
486 views

What would cause a short to ground while driving - how to locate the problem?

So I was pulled up at the traffic lights yesterday in my 1980 Nissan Urvan (E23) diesel after just coming off a 30 minute commute on the freeway when all of a sudden the engine cut out and a few ...
5
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5answers
15k 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 ...
5
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2answers
6k views

Diesel engine timing?

A petrol engine can fire the spark plugs slightly earlier or later to account for factors like revolution speed and engine temperature. However a diesel only fires when the mixture is compressed. ...
5
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2answers
1k views

Does the a gasoline or diesel engine supply fuel at high speeds when not pressing the pedal and more

Let say I directly connect a small engine to my bicycle, and that I'm superman who can overcome any force. Then I start cycling (using my legs...) - the engine starts to rotate, even though I haven't "...
5
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2answers
2k views

Turbo Failure Modes (VW TDI VNT15)

The turbo output in our 2002 VW Jetta TDI has dropped way off. Pulling the turbo out seems like a serious piece of work, so I'd like to be pretty confident that it has failed before I pull it. So I'm ...
5
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2answers
4k views

BMW 330D 2001 E46 Turbo Charger not working as expected after changing

I have a problem with my car. My car: BMW 330D, 135kw, 2001 year, E46. A week ago my turbo charger got broken when I was driving. There was a lot of white smoke going out of exhaust and there was no ...
5
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3answers
697 views

2008 Honda Accord turns over but wont start

I have a 2008 Honda Accord 2.2 Diesel which turns over but won't start. There is 240,000 km on the clock. This issue first occurred about 9 weeks ago. I got in my car to go to work and it kept turning ...
5
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6answers
2k views

How can I increase the life of my diesel engine when my car does lots of small trips?

What things can I do to increase the life of my diesel engine when I make lots of short trips in the car? My daily routine means that the trip to work goes via another destination which gives my ...
5
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1answer
1k views

Car suggests shifting gears too early [closed]

I own a 2014 Volkswagen Passat 2.0 TDI Bluemotion. It is a 6 speed manual transmission. I understand that it is a car tuned for economy. But it still asks me to shift too early. For example if I'm at ...
5
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2answers
2k views

Accidently put biodiesel fuel in 2009 Nissan Altima. What to do?

I made a really stupid mistake earlier tonight. I was at a gas station refueling my 2009 Nissan Altima (2.5L 4-cylinder engine). I stupidly selected the only option that was available at the pump ...
5
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1answer
95 views

How much to get an old restomod running?

potentially a difficult question here. It's looking like I'm going to be moving out of state for a new job here in the next few months, which is throwing a big wrench into projects I have going on. ...
5
votes
1answer
819 views

Octane rating of fats and oils versus diesel fuel

I'm struggling to understand why, apart from viscosity, it's so easy to substitute lipids (i.e. SVO, WVO) for diesel fuel. I'd have to assume these fuels have inherently different octane ratings and ...
5
votes
1answer
493 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 ...
5
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1answer
4k views

Nissan Quashqai acceleration problem

I have a 2009 1.5dci Nissan Quashqai diesel with 59k miles on the clock. I am experiencing the following symptoms and would appreciate any guidance the community can offer: 1) Car is ticking over ...
5
votes
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 ...
5
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1answer
661 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 ...
5
votes
1answer
87 views

Diesel Yaris doesn't start very well after an alternator change?

I have recently changed the alternator after it died in my diesel Yaris. I have done about 150 miles with the new alternator however it still doesn't start very well. It now takes 1 long or sometimes ...
5
votes
1answer
5k views

Buzzing sound coming from Audi A3 2.0 TDI engine

This is an '05 A3 with a 2.0 TDI BKD engine, about 120k miles on it. The sound starts when I move the key to the ON position, without starting the engine. But even with the engine on, it's still there,...
5
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0answers
3k views

VW Passat diesel fails to start when the engine is warm [closed]

My car will start OK when cold, on the first or second attempt. It will start on the 1st attempt if the engine has been running, and the engine has only been shopped for a few minutes. However if ...
5
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3answers
6k 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 ...
5
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2answers
4k views

Diesel engine suddenly doesn't start and returns to normal without aparent reason

I have a Ford Fiesta 1.4 tdci 2003 that was working without issues since yesterday. Just stopped at house after work to eat, 2 hours later I went to the car and it wouldn't start. I tried hard but ...
5
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0answers
2k views

Diesel fuel pressure issue Fiat Punto 1.3 JTD [closed]

I have a Fiat Punto 188 1.3 JTD Multijet and an issue, that brings me a headache since 2 years. The car is from 2005 and already has 180 000 miles down. Almost every time, the I fast accelerate from ...
4
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2answers
14k views

Filling diesel vehicles - Vent trick

According to this site it is possible to get more diesel fuel in your tank by pressing in the vent latch on the filler neck: Look inside the filler neck and you can see a button, see below for ...
4
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3answers
1k views

Is it OK to run a diesel engine with a blocked fuel injector return line?

Recently, a squirrel paid a visit to the engine compartment of my 1999 VW (it's a diesel 1.9 TDI). Besides leaving some crabapples as gifts, it chewed clean through one of the fuel injector return ...
4
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2answers
4k views

How to increase the lifespan of a diesel turbo?

Replacing a diesel engine's turbo costs a lot of money. How should a diesel car's owner drive, park and take care to insure that he/she gets the maximum km/miles out of his/her car's turbo?
4
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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 ...
4
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3answers
2k views

Marine Diesel fuel filter vacuum gauge spiked — filters are new

I've got an 80-HP marine diesel engine (in a sailboat, naturally). I've got a the Parker/Racor 75500MAX dual fuel filter system with an attached vacuum gauge to monitor resistance. For the first few ...
4
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1answer
5k views

High oil pressure after oil and filter change

I recently changed the engine oil and filter in my Westerbeke diesel. I gave it the usual (and specified) 4.5 quarts of SAE 30, specifically Chevron DELO. Now when it starts up it reads 80 psi of ...
4
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3answers
3k views

VW Golf 2.0 SDI (2005) - smokey when pulling away

Over the last 12 months I have noticed that as I pull away and put my foot down a little more, there is often a bit more of a cloud of smoke left behind. Its not thick smoke but still it seems like ...
4
votes
3answers
20k views

2008 VW Golf - no ignition lights on dash

I have a 2008 Golf 2.0 TDi GT with no ignition lights on the dash. I put the key in the switch and turned but nothing happened. The battery is fully charged, the key fob has a new battery and locks/...
4
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3answers
4k views

How to diagnose ABS problem (ABS light on) on a 1992 Volvo 940 turbo diesel estate?

The ABS light came on after car was not used for a few weeks and a new battery fitted. The ABS light is now on all the time. The garage can't find the diagnostic plug. Any ideas on either of the ...
4
votes
1answer
2k views

Is it possible to use biodiesel in a BMW 335d if I remove the DPF and remap the ECU?

The new (2009-current) BMW 335d sells in the U.S. with a DPF to reduce emissions, but which prevents the use of biodiesel. I've read about people removing the DPF and re-mapping their ECU to get ...
4
votes
1answer
9k 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 ...
4
votes
2answers
1k views

Diesel, fuel pressure drops at speed

Now its my turn.. Volvo 2.0 diesel Siemens VDO When car gets warm, in 4th - 6th gear, the car starts shaking between 1800 - 2200 rpm, no warning lights. Diagnostics show that the fuel pressure drops ...
4
votes
1answer
6k 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 ...
4
votes
1answer
203 views

Diesel engine on LPG

I have seen LPG powered petrol cars which can run on both the fuels. But I have not seen any Diesel engine car running on LPG. Is it possible to run a diesel engine on LPG?
4
votes
1answer
593 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 ...
4
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2answers
5k 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?