Question about Mazda Cars & Trucks
Sounds like a broken valve spring or a rocker arm off,have you revved it really hard lately?
If a valve train part broke the backfire should be rather constant,like rythmic,
Posted on Feb 18, 2012
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Posted on Jan 02, 2017
SOURCE: Skipping and Popping. 4.6 v8
It sounds like you have a miss fire event going on. look for spark jumping from the plug wires to the engine or any metal object. Best way to see is start you truck at night open the hood you should be able to see the spark jumping
Posted on Mar 29, 2009
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It's most likely a vacuum line, look
under your hood (close to the cowl panel) for a disconnected, cracked
or broken vacuum line.
In some rear cases, it could be the
vacuum switch (in dash). Or vacuum diaphragm (under dash).
Hope this helps you ???
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