Recent Topics
UOA Rotella T6 5W-40 6.0 PSD
by SqFeath
02/20/17 04:00 PM
Replace clutch fork?
by buck91
02/20/17 03:44 PM
Oil for a 2000 Chrysler LHS
by Dumc87
02/20/17 03:40 PM
opinon on 15w50 mobil1syn car oil in 2015 royal en
by triggercage
02/20/17 03:33 PM
Bosch Distance Plus are being clearanced @Walmart
by EscapeVelocity
02/20/17 03:20 PM
06 buick lacrosse high mount brake light
by lucerne06
02/20/17 03:06 PM
2.7 ecoboost oci
by robo339
02/20/17 03:00 PM
1985 Onan B43 engine, which oil?
by Rat_Patrol
02/20/17 02:39 PM
Any carburetor experts here?
by maverickfhs
02/20/17 02:31 PM
Win 10 laptop randomly won't sleep
by LeakySeals
02/20/17 02:22 PM
It snowed here
by eljefino
02/20/17 02:08 PM
Oil and filter for 2017 6.2L GMC, what matters?
by FlyingTexan
02/20/17 01:50 PM
Pennz Plat Euro 5W30 w/LL-04 @ Walmart
by wemay
02/20/17 12:26 PM
Sound like a bad water pump bearing?
by skaughtz
02/20/17 12:25 PM
New 2016 Grand Caravan 3.6 question
by otis24
02/20/17 12:23 PM
Talk to me about magnetorheological dampers
by Ddubya
02/20/17 12:00 PM
Removing Paint from Metal Baseboard Heaters
by 99Saturn
02/20/17 11:54 AM
Marvel Ultimate Fuel & Motor Treatment
by BobFout
02/20/17 11:53 AM
My first HDMI A/V receiver...Yamaha RX-V481
by Blaze
02/20/17 11:31 AM
Added a new scooter to my "stable"
by andrewg
02/20/17 11:29 AM
Newest Members
NZwogboy, emiliobadillio, Rat_Patrol, Couch_Incdident, vhinch
60587 Registered Users
Who's Online
88 registered (4ever4d, adriano, 901Memphis, 3800Series, ag_ghost, 10 invisible), 2147 Guests and 20 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
60587 Members
66 Forums
261324 Topics
4310647 Posts

Max Online: 3590 @ 01/24/17 08:07 PM
Donate to BITOG
Page 1 of 2 1 2 >
Topic Options
#1853795 - 04/11/10 09:06 PM what happens if you run gas in a diesel engine?
sasilverbullet Offline


Registered: 08/22/04
Posts: 1191
Loc: San Antonio, Republic of Texas
My son and I were discussing this, I didn't know exactly. I own a 02 VW bug with a diesel engine and he asked what would happen to the engine if you filled the tank with gas and drove it.

Could someone please help me answer his question?

Second question: which of the two fuels ignites easier in the engine and how does that play a role in what happens to the engine?

And a highly technical answer is fine, he's 17 and a budding genius about math/chemistry/computers...


Edited by sasilverbullet (04/11/10 09:09 PM)
_________________________
14 Honda Civic 4dr EX-L-M1 0W-20 & Honda filter
14 Honda Accord 4dr EX-L 4cyl-M1 0W-20 & Honda filter
02 Chevy 5.7L van-GTX HM 10W-40 & WIX filter

Top
#1853820 - 04/11/10 09:25 PM Re: what happens if you run gas in a diesel engine? [Re: sasilverbullet]
defektes Offline


Registered: 09/09/09
Posts: 3216
Loc: Hesperia, CA, USA
If I remember correctly something to do with lubrication properties of diesel in the fuel system.
_________________________
2002 GMC Sierra 5sp. 4.3L 145K ST3980 E-Core
Chevron Supreme 5w-30, Amsoil Synchromesh In Tranny
Valvoline SynPower 75w-90 Gear Oil In Rear

Top
#1853822 - 04/11/10 09:28 PM Re: what happens if you run gas in a diesel engine? [Re: defektes]
kevinf Offline


Registered: 05/08/09
Posts: 137
Loc: Virginia
Lots of parts in a diesel setup rely on lubrication from diesel, that they won't get from gasoline. Short term it probably wouldn't do too much damage. Diesel has more energy density than gasoline, so it will lose power. And the gasoline may not detonate on compression effectively, so it may not run at all, depending on what percentage gasoline vs diesel is in the tank.
_________________________
---
'07 Toyota Sienna - Castrol GTX 5W30
'01 Toyota Sienna - PP 5W30
'98 Acura CL 3.0 - G-Oil 5W30

Top
#1853826 - 04/11/10 09:31 PM Re: what happens if you run gas in a diesel engine? [Re: sasilverbullet]
gonzo Offline


Registered: 07/05/09
Posts: 461
Loc: millington tn.
The nozzle from a diesel pump should not be able to fit into a gas powered vehicle.

Top
#1853836 - 04/11/10 09:38 PM Re: what happens if you run gas in a diesel engine? [Re: defektes]
SuperDave456 Offline


Registered: 10/29/08
Posts: 2458
Loc: Dallas, Texas
Knew a person who borrowed a friend's VW in college. He filled it up with 87 octane even though it says "Diesel ONLY" just about everywhere on the car.

The car wouldn't start, someone somewhere designed a safety for this sort of thing, and once he got to thinking about things... he knew he was in deep poo poo.
Thank goodness it wouldn't start as Diesel is more difficult to ignite because it is supposed to... well... diesel.
Due to the absence of spark plugs, and if the fuel injectors still worked correctly, eventually you would get 87 octane to diesel.
Depending on how it burned it might turn over the engine, then again it might burn in such a way to bend valves or cause other damaging high pressure spikes (perhaps blow a cylinder out the bottom like nitro methane, but who knows).
BTW, Diesel is Much more lubricant like than Gasoline, so there is that aspect of cylinder wear also.

Anyways, eventually they all got together and decided that the best course of action was to disconnect the main hose that lead to the fuel injection system and drained the entire tank in the parking lot of the gas station. I think it was like 15 gallons of gas going down the drain. Refilled with Diesel and it supposedly ran fine.

BTW, this was the same set of dudes that almost burned down an Apt. complex because they didn't have a lighter and decided to use a electric element on a stove to light a cigarette. They turned the stove top element on HIGH and then proceeded to pass out due to having too much to drink. A few hours passed, I stopped by, and felt radiant heat coming from the kitchen in the back, about 25 feet away. As I approached the stove top the element was a Bright cherry red, I had to wear gloves to get to the knob the stove top was so hot. Not bright fellows to say the least.

Top
#1853839 - 04/11/10 09:41 PM Re: what happens if you run gas in a diesel engine? [Re: SuperDave456]
DieselTech Offline


Registered: 10/27/09
Posts: 1969
Loc: AZ
Yeah it's horrible for pumps and diesel don't run on octane but whats called cetane. The result will be horrible rattling and extreme lack of lubrication to the VERY expensive fuel system components

Diesel is harder to ignite and is ignited from compression rather then spark. Thus the very bad rattle from gas in a diesel will obviously occure.

Best advice pickup the green handle or for the shotty stations the yellow.....mobil


Edited by DieselTech (04/11/10 09:45 PM)
_________________________
03 Ford F250 7.3 (Lots of Mods). Redline & baldwin 7039
07 Ford F150 fill. Penz Ultra 5-20 & Bosch 3410
99 ford F150 4.6 fill. Redline 5-30 & P1

Top
#1853840 - 04/11/10 09:43 PM Re: what happens if you run gas in a diesel engine? [Re: DieselTech]
simple_gifts Offline


Registered: 07/26/04
Posts: 11234
Loc: Middlesex County CT
I like the comment from "the straight dope" website

Quote:

What happens when you use gasoline in a diesel engine? Either something expensive or something very expensive.
_________________________
2004 Prius; 68K M1 0W-30
2003 Echo > 4.03x10^5 miles; 0W-40
2006 B2300;114K;ALM


Was driving an ox cart; Now on the USS Enterprise

Top
#1853842 - 04/11/10 09:44 PM Re: what happens if you run gas in a diesel engine? [Re: SuperDave456]
doitmyself Offline


Registered: 06/03/02
Posts: 5585
Loc: MI
Seems like the much higher compression of a diesel engine, combined with the higher volatility of gasoline, combined with the way direct injection of diesel engines works would cause a greater explosion in the cylinder, maybe at the wrong time (pre-ignition) and damage the engine catastrophically. Whew, long sentence.

Google diesel engine compression.

Top
#1853847 - 04/11/10 09:47 PM Re: what happens if you run gas in a diesel engine? [Re: doitmyself]
DieselTech Offline


Registered: 10/27/09
Posts: 1969
Loc: AZ
Originally Posted By: doitmyself
Seems like the much higher compression of a diesel engine, combined with the higher volatility of gasoline, combined with the way direct injection of diesel engines works would cause a greater explosion in the cylinder, maybe at the wrong time (pre-ignition) and damage the engine catastrophically. Whew, long sentence.

Google diesel engine compression.


This is correct, most pumps has octane ratings of 87-93. Diesel cetane runs between 47 and 55. 55 if your extremely lucky these days
_________________________
03 Ford F250 7.3 (Lots of Mods). Redline & baldwin 7039
07 Ford F150 fill. Penz Ultra 5-20 & Bosch 3410
99 ford F150 4.6 fill. Redline 5-30 & P1

Top
#1853861 - 04/11/10 09:59 PM Re: what happens if you run gas in a diesel engine? [Re: gonzo]
HTSS_TR Offline


Registered: 04/17/06
Posts: 19528
Loc: Lake Forest, CA
_________________________
'00 MB E430
'04 Honda S2000
'06 Volvo V70
'14 Honda Accord LX
"Throwing food away is like stealing it from the poor and hungry" Pope Francis

Top
#1853863 - 04/11/10 10:00 PM Re: what happens if you run gas in a diesel engine? [Re: doitmyself]
FL_Rob Offline


Registered: 06/03/09
Posts: 1509
Loc: gulf coast FL.U.S.
High cylinder pressures and temps would pre-ignite.Plus injectors at what?... 1500-1800-or 2200 PSI would cause a flame thrower effect.Luckily,diesel engine components are so strong it wouldnt have an effect.As mentioned earlier it just wont run on straight gasoline.

Top
#1853866 - 04/11/10 10:03 PM Re: what happens if you run gas in a diesel engine? [Re: gonzo]
gonzo Offline


Registered: 07/05/09
Posts: 461
Loc: millington tn.
Originally Posted By: gonzo
The nozzle from a diesel pump should not be able to fit into a gas powered vehicle.
I guess I should have payed more attention to what was being talked about.Just ignore what I said earlier.Thanks for not making me look too dumb.I don't need any help with that.

Top
#1853872 - 04/11/10 10:10 PM Re: what happens if you run gas in a diesel engine [Re: gonzo]
Seguino Offline


Registered: 11/28/09
Posts: 311
Loc: Vancouver BC
One of our less than stellar employees filled up the truck with Gas. An old Cummins ( 855 cubic inches ). Had to call the tow truck 5 miles down the road. Goodbye engine.


Edited by Seguino (04/11/10 10:10 PM)

Top
#1854045 - 04/12/10 02:28 AM Re: what happens if you run gas in a diesel engine [Re: Seguino]
Kiwi_ME Offline


Registered: 10/24/08
Posts: 1019
Loc: New Zealand
The local BP station once accidentally put gasoline in my mother's 2004 BMW diesel. She drove it around for about 15 minutes with it stumbling badly and blowing heaps of white smoke. After she returned to the station they paid for the fuel to be drained out. It seems to still drive OK, 2 years later. The problem is if the high-pressure CR pump had been damaged a new one would have cost in the region of $6K in this part of the world.

Top
#1855144 - 04/12/10 06:46 PM Re: what happens if you run gas in a diesel engine [Re: Kiwi_ME]
Dieseldoctor Offline


Registered: 07/07/09
Posts: 306
Loc: tn usa
My 1991 speced u could run up to 30% gas in a diesel in winter time. I never did.. causes detonation misfiring and eventually it will burn a hole in the piston valves totally destroy the engine most likely not to mention if it has any close fitting pump parts most likely they will seize up too.

Top
Page 1 of 2 1 2 >