# diesel in a gas engine?

**URL:** <https://forums.speedlife.net/t/diesel-in-a-gas-engine/27824>\
**Category:** NYSpeed Automotive\
**Created:** [April 18, 2007, 6:08am UTC](https://forums.speedlife.net/t/diesel-in-a-gas-engine/27824 "2007-04-18T06:08:56Z")\
**Posts on this page:** 20\
**Page:** 1

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**Author:** ![LZ1](https://avatars.discourse-cdn.com/v4/letter/l/7ab992/32.png) [@LZ1](https://forums.speedlife.net/u/LZ1)\
**Post date:** [April 18, 2007, 6:08am UTC](https://forums.speedlife.net/t/diesel-in-a-gas-engine/27824/1 "2007-04-18T06:08:56Z")

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So what happens because apparently some girl at work just did this and had to get her car towed to the shop :lol:

I was under the impression that the diesel nozzles at the pump don’t fit in the normal filler neck of most cars.

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**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\
**Post date:** [April 18, 2007, 6:12am UTC](https://forums.speedlife.net/t/diesel-in-a-gas-engine/27824/2 "2007-04-18T06:12:27Z")

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they don’t deisel is bigger. she would have to be REALLY dumb to manage that.

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**Author:** ![OneFastMonkey](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/onefastmonkey/32/7241_2.png) [@OneFastMonkey](https://forums.speedlife.net/u/OneFastMonkey)\
**Post date:** [April 18, 2007, 6:14am UTC](https://forums.speedlife.net/t/diesel-in-a-gas-engine/27824/3 "2007-04-18T06:14:36Z")

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X2 they dont fit. What a fucking idiot

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**Author:** ![93dx\_hatch](https://avatars.discourse-cdn.com/v4/letter/9/90ced4/32.png) [@93dx\_hatch](https://forums.speedlife.net/u/93dx_hatch)\
**Post date:** [April 18, 2007, 6:18am UTC](https://forums.speedlife.net/t/diesel-in-a-gas-engine/27824/4 "2007-04-18T06:18:35Z")

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^ you are all wrong there are 2 types of diesel nozzles, the big ones at like jims truck stop.

But Mobil, Delta, Sunoco etc. have the same size nozzles as gas

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**Author:** ![Anonymity](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/anonymity/32/7215_2.png) [@Anonymity](https://forums.speedlife.net/u/Anonymity)\
**Post date:** [April 18, 2007, 6:20am UTC](https://forums.speedlife.net/t/diesel-in-a-gas-engine/27824/5 "2007-04-18T06:20:36Z")

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no they fit. the car will never run right a gain. it is possible that the fuel pump too a poop because it could not take the diesel fuel.

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**Author:** ![audios](https://avatars.discourse-cdn.com/v4/letter/a/c4cdca/32.png) [@audios](https://forums.speedlife.net/u/audios)\
**Post date:** [April 18, 2007, 6:20am UTC](https://forums.speedlife.net/t/diesel-in-a-gas-engine/27824/6 "2007-04-18T06:20:55Z")

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i dont think it hurts it does it? just real low octane so the thing will buck and shake.

after a drain and refill with 87 i think she will be fine.

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**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\
**Post date:** [April 18, 2007, 6:22am UTC](https://forums.speedlife.net/t/diesel-in-a-gas-engine/27824/7 "2007-04-18T06:22:12Z")

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[quote=“93dx–hatch,post:4,topic:27824"”]

^ you are all wrong there are 2 types of diesel nozzles, the big ones at like jims truck stop.

But Mobil, Delta, Sunoco etc. have the same size nozzles as gas

[/quote]

are you sure they are the same size? i am fairly certain they are bigger, not vastly larger, but you have to work harder to get it in.

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**Author:** ![93dx\_hatch](https://avatars.discourse-cdn.com/v4/letter/9/90ced4/32.png) [@93dx\_hatch](https://forums.speedlife.net/u/93dx_hatch)\
**Post date:** [April 18, 2007, 6:25am UTC](https://forums.speedlife.net/t/diesel-in-a-gas-engine/27824/8 "2007-04-18T06:25:21Z")

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no they’re the same size I am positive, my eyecromitor is very accurate

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**Author:** ![LZ1](https://avatars.discourse-cdn.com/v4/letter/l/7ab992/32.png) [@LZ1](https://forums.speedlife.net/u/LZ1)\
**Post date:** [April 18, 2007, 6:25am UTC](https://forums.speedlife.net/t/diesel-in-a-gas-engine/27824/9 "2007-04-18T06:25:34Z")

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The tow truck driver said the motor seized…so who knows

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**Author:** ![LAFENGAS](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/lafengas/32/7573_2.png) [@LAFENGAS](https://forums.speedlife.net/u/LAFENGAS)\
**Post date:** [April 18, 2007, 6:26am UTC](https://forums.speedlife.net/t/diesel-in-a-gas-engine/27824/10 "2007-04-18T06:26:18Z")

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diesel in a gasoline engine = bad. Even if you filled the tank with diesel and didn’t start the car, you’d have to get the tank cleaned/flushed.

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**Author:** ![Locutus](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/locutus/32/7574_2.png) [@Locutus](https://forums.speedlife.net/u/Locutus)\
**Post date:** [April 18, 2007, 6:26am UTC](https://forums.speedlife.net/t/diesel-in-a-gas-engine/27824/11 "2007-04-18T06:26:40Z")

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[quote=“newman,post:7,topic:27824"”]

are you sure they are the same size? i am fairly certain they are bigger, not vastly larger, but you have to work harder to get it in.

[/quote]

thats what i tell people too

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**Author:** ![LAFENGAS](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/lafengas/32/7573_2.png) [@LAFENGAS](https://forums.speedlife.net/u/LAFENGAS)\
**Post date:** [April 18, 2007, 6:34am UTC](https://forums.speedlife.net/t/diesel-in-a-gas-engine/27824/12 "2007-04-18T06:34:07Z")

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[quote=“audios,post:6,topic:27824"”]

i dont think it hurts it does it? just real low octane so the thing will buck and shake.

after a drain and refill with 87 i think she will be fine.

[/quote]

“buck and shake” is what will happen if you use gasoline in a diesel engine (assuming it’s not 100% gasoline). Diesel is based on a compressive-ignition and gasoline will ignite wayyyy before diesel fuel when it’s compressed.

In short, gasoline will ignite before its supposed to when in a diesel engine, causing the ‘shakes’

Diesel doesn’t combust in an gasoline engine. So depending on the % of diesel, it’ll either run poorly or not at all.

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**Author:** ![66impalass](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/66impalass/32/7429_2.png) [@66impalass](https://forums.speedlife.net/u/66impalass)\
**Post date:** [April 18, 2007, 6:36am UTC](https://forums.speedlife.net/t/diesel-in-a-gas-engine/27824/13 "2007-04-18T06:36:09Z")

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[quote=“audios,post:6,topic:27824"”]

i dont think it hurts it does it? just real low octane so the thing will buck and shake.

after a drain and refill with 87 i think she will be fine.

[/quote]

uhm nope, it is a less volitile fuel and therefor a normal motor with little compressions would basically hydroloc and not ignite the fuel, I am actually surprised to hear it made it to the motor though

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**Author:** ![Bigairskier1580](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/bigairskier1580/32/7612_2.png) [@Bigairskier1580](https://forums.speedlife.net/u/Bigairskier1580)\
**Post date:** [April 18, 2007, 6:37am UTC](https://forums.speedlife.net/t/diesel-in-a-gas-engine/27824/14 "2007-04-18T06:37:42Z")

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Isn’t diesel a much lower octane though, so wouldn’t it combust extremely easily when a spark and air is provided?

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**Author:** ![LAFENGAS](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/lafengas/32/7573_2.png) [@LAFENGAS](https://forums.speedlife.net/u/LAFENGAS)\
**Post date:** [April 18, 2007, 6:40am UTC](https://forums.speedlife.net/t/diesel-in-a-gas-engine/27824/15 "2007-04-18T06:40:08Z")

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[quote=“Bigairskier1580,post:14,topic:27824"”]

Isn’t diesel a much lower octane though, so wouldn’t it combust extremely easily when a spark and air is provided?

[/quote]

diesel requires very high compression = high heat. sparks don’t ignite diesel, heat does.

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**Author:** ![Bigairskier1580](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/bigairskier1580/32/7612_2.png) [@Bigairskier1580](https://forums.speedlife.net/u/Bigairskier1580)\
**Post date:** [April 18, 2007, 6:41am UTC](https://forums.speedlife.net/t/diesel-in-a-gas-engine/27824/16 "2007-04-18T06:41:10Z")

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Gotcha!

:tup: thanks for teaching me.

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**Author:** ![Geehee](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/geehee/32/7238_2.png) [@Geehee](https://forums.speedlife.net/u/Geehee)\
**Post date:** [April 18, 2007, 6:46am UTC](https://forums.speedlife.net/t/diesel-in-a-gas-engine/27824/17 "2007-04-18T06:46:24Z")

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hahahahhahahahhahhahahhahahhahahhahhaha

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**Author:** ![audios](https://avatars.discourse-cdn.com/v4/letter/a/c4cdca/32.png) [@audios](https://forums.speedlife.net/u/audios)\
**Post date:** [April 18, 2007, 6:48am UTC](https://forums.speedlife.net/t/diesel-in-a-gas-engine/27824/18 "2007-04-18T06:48:05Z")

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oh boy cookies for everyone in this thread except for the girl who put the wrong fuel in her car. learn something new everyday

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**Author:** ![Schema](https://avatars.discourse-cdn.com/v4/letter/s/779978/32.png) [@Schema](https://forums.speedlife.net/u/Schema)\
**Post date:** [April 18, 2007, 6:49am UTC](https://forums.speedlife.net/t/diesel-in-a-gas-engine/27824/19 "2007-04-18T06:49:34Z")

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Couldnt you drain the tank, fill it with gas, feed the injectors out of the car, and turn it over to flush most of it out? I’m sure it’s not going to make the car perfect again, but damn, I’d hate to junk a car out of a stupid mistake.

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**Author:** ![Anonymity](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/anonymity/32/7215_2.png) [@Anonymity](https://forums.speedlife.net/u/Anonymity)\
**Post date:** [April 18, 2007, 6:50am UTC](https://forums.speedlife.net/t/diesel-in-a-gas-engine/27824/20 "2007-04-18T06:50:25Z")

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i am not sure if the fuel pump would take it. and be able to pass the fuel filter.

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