1998 Mazda B3000 Engine/no power

Tiny
B3000DRIVER
  • MEMBER
  • 1998 MAZDA B3000
  • 215,000 MILES
My truck keeps skipping and has now power while driving, I recently had the spark plugs and plug wires changed hoping that would fix the problem but it only fixed it for about a day. And now I can't figure out what it could be. Thanks for helping if you have any ideas on what it could be.
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Tuesday, November 19th, 2013 AT 7:32 AM

8 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Is the check engine light on?
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Tuesday, November 19th, 2013 AT 8:20 AM
Tiny
B3000DRIVER
  • MEMBER
The check engine light has just been blinking
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Tuesday, November 26th, 2013 AT 8:07 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Was the distributor cap and rotor replaced with the plugs and wires? As far as the light flashing, that is what they do when a cylinder is misfiring.

Also, have you checked for vacuum leaks, bad coil wiring or loose connections?

I'm sitting here thinking about your issue. Since the problem went away for a day with the plugs and wires, that leads me to think there is a problem with the ignition system. Let me know about the cap and rotor. Also, make sure the plug wires are properly attached at both the distributor and the plugs.

Let me know what you find.
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Tuesday, November 26th, 2013 AT 8:47 AM
Tiny
B3000DRIVER
  • MEMBER
Just had the coil pack switched today and it started running fine then it started misfiring after a little bit of driving, I didn't have the distributor cap or rotor replaced, but I got it hooked up to the computer and it came up fuel system two lean cylinder bank 1. If that helps at all.
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Tuesday, November 26th, 2013 AT 9:45 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
A lean reading is usually the result of a vacuum leak. Have you checked for that?
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Tuesday, November 26th, 2013 AT 10:36 AM
Tiny
B3000DRIVER
  • MEMBER
How would I check for a vacuum leak?
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Tuesday, November 26th, 2013 AT 5:00 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
I will explain how I check, but you must be careful doing it. With the engine running, I spray carb cleaner on and around the vacuum hoses under the hood as well as the intake gasket. If there is a leak, the engine RPM's will increase.

You can also get a vacuum gauge and check to see what the vacuum pressure is right at the manifold. It should be around 17. If it is much lower, I would question a leak. The only problem is with this method, you don't know where the leak is located.

If you decide to check using carb cleaner, make sure not to spray the cleaner on the exhaust manifold or any other object that could be extremely hot. Carb cleaner is flammable and can catch fire. You should also have a fire extinguisher near by.

Let me know what you find.
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Tuesday, November 26th, 2013 AT 5:14 PM
Tiny
RICO T
  • MEMBER
Did you fix the problem
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Monday, April 7th, 2014 AT 12:48 PM

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