Page 1 of 3 123 LastLast
Results 1 to 10 of 21
  1. #1
    Silver Member century3045's Avatar
    Join Date
    Feb 2006
    Posts
    125
    Location
    Westminster, SC
    Tractor
    century/A/C 616

    Default Gas in a diesel

    My son poured about 30 dollars worth of high octane racing fuel for a racing 4 wheeler into my Century 3045 (Yanmar Diesel) today and ran it a little while. He said he didn't run it long but how can I tell if it damaged the engine?
    Thanks

  2. #2
    Super Member
    Join Date
    Apr 2004
    Posts
    6,385
    Location
    SF Bay Area-Ca Olympia WA Salzburg Austria
    Tractor
    Cat D3, Deere 110 TLB, Kubota BX23 and L3800 Craftsman Mower, Deere 350C Dozer

    Default Re: Gas in a diesel

    My local kubota Dealer had a new (less than 10 hours) tractor in his shop with the engine completely torn down. Being curious, I asked the mechanic what happened and he motioned me over to take a look.

    Thew mechanic said the new tractor owner loaned the tractor to his Brother-in-law over the weekend and the BIL filled the the tank with gasoline. The BIL knew something was wrong when the motor lost power and the tractor started to shake.

    The mechanic had found two of the three pistons had holes burned through and the head was warped and cracked. Because of the damage, the dealer was going to advise installing a new long block.

    How does your motor run? Is it smooth with normal power? Was the tank only topped-off? If so, you might be OK.

    On a similar not, years ago, my brother called and said he blew the engine on his 68 Mustang. Turns out he had filled the tank with diesel by mistake. I drained the tank, refilled it with fresh gas and 10 years later the engine still runs strong.

  3. #3
    Silver Member davemhughes's Avatar
    Join Date
    Oct 2006
    Posts
    163
    Location
    Ft.Riley KS
    Tractor
    SAME 43hp turbo charged 4cyl diesel w/fel

    Default Re: Gas in a diesel

    Quote Originally Posted by century3045
    My son poured about 30 dollars worth of high octane racing fuel for a racing 4 wheeler into my Century 3045 (Yanmar Diesel) today and ran it a little while. He said he didn't run it long but how can I tell if it damaged the engine?
    Thanks
    1. Drain tank
    2.replace filters and let fuel drain out of filter send line
    3. put some diesel in it and see if it starts and run it a while
    4. $30 worth of racing fuel is about 4 gal mixed in with how much diesel?
    12k 20ft Equip Trailer
    Bobcat 863 Skid Steer- Currently needs fuel pick up installed
    Country Clipper Boss Liquid cooled 72in ZTR
    Country Clipper Boss Liquid Cooled 60in ZTR
    2006 40hp turbo diesel SAME 4x4 tractor w/
    Front end loader
    Pto tillers, box blade, rock rake, 7ft brush cutter, disc, straight blade, tooth bucket, pallet fork

  4. #4
    Silver Member century3045's Avatar
    Join Date
    Feb 2006
    Posts
    125
    Location
    Westminster, SC
    Tractor
    century/A/C 616

    Default Re: Gas in a diesel

    It was exactly 4 gallons and it topped the tank off full. It must have been half full or close to half. He drove the tractor down in the pasture and dug up a very small stump with the back-hoe. He says about 15 minutes, I'd say 30. However he never knew anything was wrong, It ran as good when he parked it as when he started it up and he said the temperature guage was normal because he does at least check that. I rode to work with a friend and he left his 4-wheeler in my shop and set the jug of fuel in the back-hoe bucket. The fuel was blue , don't know how it could be confused with diesel but it did.

  5. #5
    Veteran Member
    Join Date
    Jun 2006
    Posts
    1,437
    Location
    Wheeling, WV
    Tractor
    2006 JD 3520 w/cab & 300CX loader. 1995 JD 870 w/440 loader & 8b backhoe.JD 455 w/54" mower deck.

    Default Re: Gas in a diesel

    What color can was the racing gas in? That's one lesson learned. Always store gas,fuel and kerosene or any other product in the properly colored container. Hopefully it did not do any damage to your engine. What you just ran into is one reason I am very hesitant to loan anything out. It seems people just don't think any more. After draining everything and changing filters I would flush out the fuel tank and lines with fuel. Blow thru any fuel lines with air that you can. Then run it under light load for awhile and hope for the best.Good luck.
    "Good judgement comes from experience.Experience comes from bad judgement."

  6. #6
    Elite Member DieselPower's Avatar
    Join Date
    Sep 2006
    Posts
    2,761
    Location
    Fairfield, PA
    Tractor
    JD 3020, JD 4230, JD 7410, JD 2440, MF 750, NH LS170

    Default Re: Gas in a diesel

    Like the others have said the best thing you can do is drain the tank, change the filters and purge the mixed fuel out. Keep your fingers crossed no damage was caused. I have worked on alot of trucks that have had their tanks filled with gas over the years and the majority of the time a simple drain/refill and filters was all they needed.

    For the first tank full you might also consider adding a little 2 cycle engine oil to your fuel to add to the lubricity untill all the gas is worked out of the system. That's the main problem with gas in a diesel, it's lowered lubricity.

  7. #7
    Silver Member century3045's Avatar
    Join Date
    Feb 2006
    Posts
    125
    Location
    Westminster, SC
    Tractor
    century/A/C 616

    Default Re: Gas in a diesel

    So far, So good!! I loosened the injector lines and after clening bowl and filter I hooked a jug of fresh diesel up to the fuel pump and spun the motor repeatedly until fresh diesel was coming out the injector lines. Then I drained the tanks and blew air through the lines and left the cap off and lines disconnected over night so the vapors, if any would evaporate. I put everything back and fired her up. I can't tell any changes in the running of the motor but I'm gonna try to keep it at low rpm's for a while just in case! Thanks for all the input!!

  8. #8
    Epic Contributor Soundguy's Avatar
    Join Date
    Mar 2002
    Posts
    47,543
    Location
    Central florida
    Tractor
    ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC

    Default Re: Gas in a diesel

    I think you got real lucky that there was enough diesel in there to keep things from getting explosive.

    I'd run some 2cyc oil.. or tranny fluid.. or even engine oil in the fuel tank for this run just to be onthe safe side. Even some power service as it addas lubricity.. etc..

    Soundguy

  9. #9
    Gold Member redlevel's Avatar
    Join Date
    Jan 2005
    Posts
    357
    Location
    100 miles south of Atlanta
    Tractor
    Ford 600; Farmtrac 535

    Default Re: Gas in a diesel

    Quote Originally Posted by ultrarunner
    The mechanic had found two of the three pistons had holes burned through
    The same thing happened to a Super Dexta I owned about 20 years ago. I loaned it to a friend whose property I was renting, and he cranked it by holding a gasoline-soaked rag over the air intake. Blew holes in two pistons. The tractor cranked and ran, but I noticed it was pumping oil out through the dipstick. The compression was going back into the crankcase and forcing the oil out. I hope you have better luck.

    Mark

  10. #10
    Gold Member TrippleT's Avatar
    Join Date
    May 2006
    Posts
    306
    Location
    AR
    Tractor
    NH TC33D, JD LX188, Wheelhorse414

    Default Re: Gas in a diesel

    I would go along with Soundguy there, put some lube in the fuel. Injection pumps are expensive. Evidently you got lucky, if the engine is running that well. If there is no blowby you must have.
    I saw a guy run a chainsaw without oil in the gas and it froze up and one of the guys stuck a punch down the sparkplug hole and broke the piston loose. They put fuel in it and it ran. They took it back out on the job. LOL
    I sure wouldn't suggest that.

Page 1 of 3 123 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
© 2014 TractorByNet.com. TractorByNet is a registered trademark of IMC Digital Universe, Inc. Other trademarks on this page are the property of their respective owners.