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E-85 cold start problem

Discussion in 'VF Holden Commodore (2013 - 2017)' started by christov, Jul 26, 2014.

  1. christov

    christov RFFN RFFR

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    Hello people,

    I've only noticed this in winter, however just ran my second tank of E-85 in quite some time, and my car is now almost stalling out when it goes to start first thing in the morning.

    Is that normal for E-85, or is it an issue I should be talking to Holden about?

    Car is stock except for side mount CAI, and 2.5" catback - no tune change.

    Cheers!
     
  2. hotrod

    hotrod Banned

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    sounds about right , E85 causes plenty of issues such as carby and injector problems , I suggest is run it on a good full tank of premium with fuel injector cleaner.
     
  3. christov

    christov RFFN RFFR

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    Thanks for the response.

    Is E-85 not supposed to burn hotter and run cleaner than premium? Since the car is E-85 compatible I would have thought it would not negatively effect any of the internals?
     
  4. hotrod

    hotrod Banned

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    Far as im aware all fuel has a bit of ethanol fuel in it , if its under a certain precent they don't need to display it.

    Most problems with ethanol fuel it leaves a film of scum , like a thin bit of plastic, that's why they say don't store away mowers etc. with fuel , it stuffs the carby up and its almost impossible to clean it.
     
  5. Jingle Bells

    Jingle Bells Guest

    I have said it before and I now say it again....do not run your car on E85 unless you are on your last dollar and have to go to Centrelink....select a high octane petrol brand and you will have no problems....anyway who wants to put sugar in your tank like the old days....same result....... !@#$%^&*......put a tiger in your tank!
     
  6. PIR4TE

    PIR4TE Banned

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    Geez guys I like you both and appreciate your comments most of the time but if you don't know a thing about something you shouldn't comment!

    OP that is normal, the stock tune for e85 needs tweaking in some areas really, this part is called cold cranking injector pulse width, needs to be raised (richer). I originally thought it was too rich but turns out needs more fuel else won't start first crank.

    See first cold crank delay in cold weather:
    [video=youtube_share;1blRAkgAFWg]http://youtu.be/1blRAkgAFWg[/video]

    Ideally these known issues with stock e85 tune values are sorted with a revised tune flash, but unlikely GM will give us one before it bows out. Most pro tuners will do this as part of any tune.
    Without spending hundreds some simple solutions are to either use eFlex (same result in our car but blended for better cold starts vs United's always 85%), or top with $5-10 regular 91. Because e85 is 107-112 octane it won't matter so much what the octane of the top up is.
     
    Last edited: Jul 26, 2014
  7. christov

    christov RFFN RFFR

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    Thanks Pirate I thought that may be the case, and I'm pretty sure you have already told me that the standard e85 tune is not ideal. I will try topping up with some normal fuel to help it. Either way, getting her tuned in the next month so will definately take note of what you've said regarding the richness of cold crank injector pulse!

    Cheers.
     
  8. Sandman

    Sandman Challenge Accepted

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    Yes the carby on a VF commodore......

    As Pirate said if you plan on running on E85 consistently I'd suggest getting it tuned to specifically for it, as you've already got a intake and exhaust you should also see some power gains from the tune as well.
     
  9. one_and_only2004

    one_and_only2004 Turbo L98 FTW

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    Ethanol fuel burns cooler, cleaner and longer compared to normal petrol - if your car isn't driven very regularly it can leave deposits in your injectors (happens to me a lot), which will require a proper clean from a shop, but that's not what your problem is. If you don't know what you're talking about stop posting crap about it.

    Pir4te is right - just had the cold crank fuel richened up on my car to cope with the cold snap and everything is working fine.
     
  10. PIR4TE

    PIR4TE Banned

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    Colder and cleaner, all positive on the internals, have posted many pics and vids showing the effect, now approaching 165,000 hard-earned fast km and goes like a rocket - 4.8 sec 0-100kph and kickdown to 160 in 4.3 at highway speed.
     
  11. christov

    christov RFFN RFFR

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    Nice, I saw the video you just posted on this thread regarding the cold start and mine is similar but much quicker to crank then yours. I love your car, I also love lamp.
     
  12. 426Cuda

    426Cuda SUBLIME!

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    Hot Rod and Jingle Bells...You Guys - ROFL.

    Mine is tuned for E85. The only issue I have is buying the bloody stuff! Nearest local is Canberra, 2.5hrs away. Mind you when I have run on it it's started fine in cold weather. That's one thing Gentech got spot on in my tune!
     
  13. Jingle Bells

    Jingle Bells Guest

    It does not sound right to me....with all the racket from the motor...I know it has some hard yards from the pedal to the metal....maybe you need to sort it out with a stethoscope...before it is to late....are not we are talking about the VF V8....what sort of motor is that ?....and how do you retune for E85...the only way to retune the VF is by a computer and logistics as far as I know...maybe you can retune your car with a screw driver....and therefore misleading the VF owners....PLEASE EXPLAIN !
     
  14. christov

    christov RFFN RFFR

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    What on earth are you talking about?

    The VE/VF motors are either L77 or L98, the former using AFM hardware but otherwise, much the same. Also I think you have the wrong understanding of the word logistics, just saying.

    I still love lamp.
     
  15. Sandman

    Sandman Challenge Accepted

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    Ignore him, you won't get anything useful out of him.
     
  16. Grennan

    Grennan Slayer of Stupid Threads

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    Just stop. Youre clueless, absolutely clueless.
     
  17. one_and_only2004

    one_and_only2004 Turbo L98 FTW

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    I honestly don't know what I just read.
     
  18. revster

    revster Active Member

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    My tuner advises me to stay away from it especially at this time of the year as the quality varies a lot. United p100 is fine according to him. Mine has a BP 98 tune.
     
  19. 426Cuda

    426Cuda SUBLIME!

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    You're not on your own there. But this bloke's just made my weekend. Seriously it's the funniest shyte ever. PMSL. I think JB has spent time at the Pauline Hanson Academic School of Engineering Degree's or "PHASED": "I don't like it, please explain?". He can't be serious, nobody is that wack.
     
  20. AirStrike

    AirStrike Administrator Staff Member

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    Get a new tuner if he can't tune for cold starts.
     

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