what's that rotten egg smell???

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Markvfl, Mar 31, 2014.

  1. Markvfl

    Markvfl Road Train Member

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    Apopka, FL
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    My 2009 ISX smells like it's burning rotten eggs for fuel today! I've noticed the smell before but today it's strong! Any ideas what's causing this?

    While I'm asking questions - what makes this fine piece of American craftsmanship surge at idle?
     
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  3. allan5oh

    allan5oh Road Train Member

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    Batteries. Change them immediately.
     
  4. bigguns

    bigguns Road Train Member

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    Have the electrical system checked to be sure it is not overcharging. If it is good then you have a shorted out battery. Do NOT change just the bad battery. Do all 3 or 4 whichever you happen to have.
     
  5. 25(2)+2

    25(2)+2 Trucker Forum STAFF Staff Member

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    I don't know if voltage would cause the surging, but it might, there are lots of electrical issues that can happen with the ecm engines, and not just the ISX.

    Even a reefer unit can have troubles with it.
     
  6. spyder7723

    spyder7723 Road Train Member

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    Rotten eggs has always been a bad battery in my experience. Every couple years I smell it, and load test the batteries and sure enough, one of them is junk. You can get a cheap load tester at any auto zone for less than fifty bucks. Sure beats taking it to a shop and paying them a hundred bucks to do the same thing.
     
    Woosy56 Thanks this.
  7. RSQ20

    RSQ20 Medium Load Member

    That is the smell of Sulfur Dioxide off gassing, boiling battery..

    The bad one will be considerably warmer that its mates... Dont mix new and old...
     
  8. spyder7723

    spyder7723 Road Train Member

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    Deleted, posted in wrong thread.
     
  9. allan5oh

    allan5oh Road Train Member

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    I've had good luck with Cat 825 CCA batteries BTW. They seem to last a good 3 years which is incredible for how hard I am. The 975+ CCA regular lead acid would last 18-24 months or so.
     
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