Question about Oldsmobile Ninety

1 Answer

Back firing through the caburator and if you hit the accellator the engine act like it want to cut off.

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  • Tbaker875 Jul 17, 2008

    1979 olsmobile 98 with a 350 ols. engine

  • wildavy Oct 02, 2008

    Simmilar, it back fires throught the carb and exaust, and now wont startat all. I have checked the timing chain and it's ok. it's in a 1993 Olds Ciera, 3.3L auto. here's what I wrote to as friend:

    I have a serious problem with the 1993 olds ceira 3.3! replaced a coil pack a couple weeks ago. now it quit on me and sounded like it jumped time, however, when I look at the timing chain it'seems to be ok...loose but ok.

    when it quit I was trying to start and let go of the key prematurely and it did that kick back run-on hiss kinda noise, so then I started it and it would not stay running and had a bunch of pinging and knocking like run on after a car is shut off.

    I really goofed as I didn't check the codes first (but I didn't pull the Bat yet so if I put back together codes should still be there), oh, it also back fired through the carb(injection) and exaust...almost took the mufler and might have plugged the cat. but i don't think so.

    anyway, you know with a back ground with these types of motors so I thought I'd give a yell.

    I guess I don't fully understand the timeing on these types of motors with the c oil packs, anyway any thing you can tell me to trouble shoot would be greatly appreciated.

    Dave

    wildavy@yahoo.com

  • mcdaniel324 Dec 27, 2008

    Replaced intake valve on 1997 Olds. Bravada, now it won't start. Should I check timing, and how?

  • Steve Allison
    Steve Allison May 11, 2010

    Something has caused the ignition timing to change.

    You didn't list the model year so we have no way of knowing whether your car has a conventional ignition system or not.

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  • Oldsmobile Master
  • 5,568 Answers

That system should be pretty conventional so you need to check ignition timing if you have a light to do it or have a service shop do it. They shouldn't charge much to check it or, as far as that goes, to adjust it if needed.
It doesn't sound like a serious problem and you can check before you go (engine off) to see if the distributor can be moved by trying to rotate it.
You should put some kind of mark to show where it was before you try this since you could otherwise make it worse.

You have to expect though that with almost 30 years 'experience' you may need the distributor and if they are original, perhaps ignition wiring too, replaced.
A rebuilt will do fine; new, they can be costly.

Posted on Jul 17, 2008

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