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What will happen if we put gasoline in a diesel engine?
Question
#64661. Asked by eztranged. (Apr 15 06 1:03 PM)
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xfacilitatorx
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When you use gasoline in a Diesel engine the gasoline does not ignite properly and burns up too quickly and the result is very low power output.
I have done this by mistake and was forced to drain all the gas and replace it with fresh Diesel. I also had to "prime" the motor with WD40.
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Baloo55th
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The result is slightly more than low power: to quote from the fixxer's reference 'Either something expensive or something very expensive'. You either blow the engine, or wreck the pump. Putting one cup of petrol to 20 gals of diesel won't do it, but one gallon to ten might be expensive. Yes, I've done it too, but I realised before I started the wagon up fortunately. Putting diesel in a petrol engine is also not recommended, as that article points out. On older engines, it can clog the carburettor or injectors (which are designed for the faster flow of petrol), and on newer ones I believe it can play heck with the engine control system for some reason,
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xfacilitatorx
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Trying to use diesel fuel in a gasoline engine also has unpleasant consequences, but generally not as dire in terms of damage to the fuel system. Depending on the proportion of diesel fuel relative to gas in the tank, a gasoline engine will either run poorly or stop altogether, necessitating another $500 trip to the repair shop for draining and flushing. A couple of old grease monkeys at the shop I used to work at claimed that their "super high-compression" gasoline engines of the late 1960s could easily switch between gasoline and diesel fuel with no problems, but I tend to think they spent too much time inhaling fumes from the carburetor cleaning tank.
Nah. You just have to flush and drain.The motor will not ever blow from gas. A Diesel motor is twice as strong all around. Valves, crank, pistons, everything. They are hard to hurt. That is why they are used in trucks and the like (not to mention the torque [not horsepower] output). No damage will occur.
The pump is designed to pump a thicker more viscous substance, Diesel, so gas flows just fine. It is a gas pump that will be damaged by Diesel fuel.
It is no more than a pain in the nether region when this mistake is made.
I have actually driven a Diesel about a half-mile from the filling station FULL of gasoline and the only thing that told me I had made a mistake was the complete lack of power and throttle response. It was like driving a turtle!
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rollin2
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In my experience puttinggasoline in a diesel is worse than the converse, it would be best to siphon all the fuel you can out of the tank and refill with diesel, this should be sufficient, no need to pay a mechanic $500 to purge the fuel system. You may want to dump out the fuel filter(s) and fill with diesel or atf. On a gasiline engine if you fill the tank from empty with diesel fuel I would siphon it out and refill with gas, 25% diesel more or less I wouldn't worry about, I have used that with no ill effect for one tank.
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markhill
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I have just undergone this problem; I accidentally put Gas in my VW Jetta TDI 2011 Diesel Engine, I have had it for about a month, bought it brand new last Christmas, and this mistake happened me owning the car for less than a week, talk about Bad Luck. Had I known what I know now from my experience, I would have saved myself a lot of money. Not to mention avoid the scam of the dealership and the mental agony. I feel obligated to share my experience with you all, so you can get this problem fixed without the horrendous cost to you. This is for cars or trucks that are still under Dealer Warranty or have Full coverage Insurance.
Scenario:
Having put gas in my Diesel engine, I drove the car from the Gas station to my home which is about 5 miles, then I realized the mistake but it was too late. I called the dealership and told them my mishap and I was sent over a tow truck at no cost and was told “it is not a big deal” bring it over we will fix it. Scam #1: This is NOT covered under warranty. Having Gotten to the VW dealership, I was told all we have to do is drain the Tank and replace the Filter and I will be good to Go; Scam # 2, you have to suck out the Gas from the lines, if need be use a compressor to suck it out, Drain the Tank and change the Filter is only good if you have NOT driven the car, once driven, this is almost never help full. The dealer made my car ready and charged me $650, before I could get home the car had its Coil light on and was not catching any speed. . I went back to the dealer and they said let us do it again as there may be some particles left, charged me another $650 (Total out of my pocket $1300). This did not fix it and I went back to the dealer and they said it is all messed up and gave me an estimate of $9950 which will NOT be covered by the warranty. Below is what I did, which the VW dealer said cannot be done (I claimed it on my insurance), but before you do that ready below Solution A, it is a better route than what I did.
Solution:
Here are the steps you need to take:
Solution A:
1. Do NOT drive the car as soon as you realize
2. Tow the car right away to a “NON-DEALER” Independent Diesel Mechanic or shop, do NOT use Roadside assistance, or else the Dealer at some point can nail you for it as that record is shared with the Dealership, Pay Cash from your pocket and an independently owned tow company, not even AAA.
3. Tow the car to a “NON-DEALER” Independent Diesel Mechanic or shop and clean up the Tank, usually should not cost more than $300 and this should fix the problem 9/10 times if you have not driven the car and 5/10 times if you have driven the car.
4. If the car is not fixed at the mechanic’s place at this point, then Tow the car back to your Home (Assuming it does not drive at all) this is imperative, however Ask the mechanic or shop to clean out all the Gas 100% regardless of if it is fixed or not.
5. If the car drives, fill up the tank with Diesel and drive at least 1 full tank, so all traces of Gas are gone.
6. Assuming the car is not fixed or barely fixed or not satisfied with the way it drives, then call the dealership while your car is at home and tell them your problem, DO NOT Mention you put “GAS” or else the warranty will NOT Cover and the dealer will love to scam you. Just mention the problem and “You don’t know how it happened, it just did”. This time use the Roadside assistance of the Dealership and tow the car to the dealership or drive the car to the dealership if it drives and let them do what it takes to fix it. Remember don’t be a “Smarty Pants” and let the dealership fix it, less knowledge is wise at this point. No Matter how much they say that there is Gas in there, remember you know nothing about this, they will try to make this into a “NON-Warranty” and try to make you pay for it. As far as you are concerned “The car is not working or working right and it is an engine problem, So FIX IT DAMN IT” put up a fight (Verbal) if need be and ultimately by law they have to fix it as this can never be proven, it could be the gas station has contaminated diesel or whatever, not your business. Be strong and smart or dumb whatever works.
Solution B:
Assuming you were an idiot like me, and believed in “Honesty the best policy”, then be ready to pay the price of honesty all the way to $10K, I am not rich and can barely make payments for the car, house, and “wife”, so here is what I did, having told the dealer 100% about the exact situation and to the minute details of what had happened.
1. Even though my Insurance agent advised me against it and the internet did not speak about this, the dealer said: “I have seen it numerous time, it will never happen, the insurance company will never pay”. The car was sitting at the dealership for over 3 weeks now, I figured what do I have to loose, (I have full coverage with Farmers) I called my insurance company. Believe me when I say, this was the easiest claim I ever filed; “a walk in the park” could not be easier. I was told I have to pay the deductible, and the adjuster went to go look at it, paid the dealership close to $10K and my car was fixed just as good as new. And Yes, I told the Insurance Company the whole scenario as to exactly how it happened taking full responsibility of the “accidental fuel contamination” (Key word for insurance claim). This can be done through your full coverage Insurance if Solution A above is not your option.
Good Luck, Its Pay Back Time Dealerships.
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