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Gary
Gary, ASE Certified Technician
Category: Car
Satisfied Customers: 999
Experience:  Senior Technician
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Can e85 flex fuel damage a diesel engine

Customer Question

can e85 flex fuel damage a diesel engine
Submitted: 10 months ago.
Category: Car
Expert:  Gary replied 10 months ago.

Hi Lisa,

How much E85 was added to how much diesel in the tank?

So for example, you added 10 gallons to half a tank etc.

Has the vehicle run since, and stopped on you?

Or have you not run the vehicle after you realized?

Gary

Customer: replied 10 months ago.
Half tank added 9gl yes have driven
Running ruff
Customer: replied 10 months ago.
Hasn't stopped on me but had to turn over twice tonight to start
Expert:  Gary replied 10 months ago.

Hi Lisa,

I have seen this many times, as would every dealer out there.

Would be best to tow the vehicle to your dealer to have them, remove and drain the tank, flush the entire fuel system, replace the fuel filters etc.

If you continue to drive it, It may damage the high pressure fuel pump and/or injectors, and worse case is also engine damage.

So please don't drive, I know it will cost a bit to rectify, but nothing compared to failures as above.

I hope this helps.

Gary

Customer: replied 10 months ago.
Thank you will do
Expert:  Gary replied 10 months ago.

Hi Lisa,

I'll check on you in a few days to see if you are ok.

Kind regards

Gary

Customer: replied 10 months ago.
Thank you appreciate your help
Expert:  Gary replied 10 months ago.

You are welcome Lisa.

I'll check back with you in a few days to see how your repair is going.

Gary

Expert:  Gary replied 10 months ago.

Hi Lisa,

Have you had your car fixed up?

I hope my advice has been of assistance to you.

Kind regards

Gary

Customer: replied 10 months ago.
Gary thank you so much You were very helpful
Expert:  Gary replied 10 months ago.

Hi Lisa,

That's great, hope it didn't cost too much.

Something to always keep in mind when refueling.

I always get a receipt in case you get a bad batch of fuel.

Glad it has worked out for you.

Please rate my service at your earliest convenience.

Kind regards

Gary