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Trouble starting engine

Discussion in 'Under the Hood' started by ProtonPusher, July 12, 2011.

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    1. ProtonPusher

      ProtonPusher New Member

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      I have a 94 Mazda Navajo. Lately it is having minor trouble starting after it has been sitting a while: roughly 6 hours or more. The first attempt to start sounds normal, but the engine just does not catch, and sometimes there is a bit of a wheeze at the end. I will usually let it crank for 1 or 2 seconds. It usually will start fine after cranking the engine a 2nd time, although sometimes runs a bit rough for a couple of seconds. It does not seem temperature dependent since it will happen on warm afternoons.

      I would like to fix this before it gets worse. Any thoughts out there what might be wrong?
       
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    3. MrShorty

      MrShorty Explorer Addict

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      My first thought on something like this is a fuel issue. 1st thing I would probably do would be to put a fuel pressure gauge on it and see what the fuel system is doing when it is hard to start.
       
    4. ProtonPusher

      ProtonPusher New Member

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      That sounds reasonable. It will be a couple of days before I can get the fuel pressure gauge to check.
       
    5. arco777

      arco777 Elite Explorer

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      Also check for vacuum leaks. They can cause starting issues and often produce a wheeze.

      Had a 93 that would not start easily one day. It was difficult to start and when it did, it would idle rough. After spraying carb cleaner under the hood with it running, I narrowed down the problem to the vacuum tree. Turned out a rubber vacuum cap had decayed and crumbled, and was leaking vacuum. A new cap made the motor start and run like new.
       

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