1986 Mazda B2000, 181,000 mi

Tiny
BOND343
  • MEMBER
  • 1986 MAZDA TRUCK
Truck starts and runs great, but then dies out of nowhere. It will always start back up, but it usually takes a five to ten minute wait. It is completely eratic, sometimes I drive it and have no problems, and sometimes I am sitting on the roadside wondering how far the truck will go before it dies again. I have replaced the whole ditributor and plug wires, and the truck still runs the same.
Wednesday, January 17th, 2007 AT 12:06 PM

7 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Try the EGR open it up and clean the carbon, then comeback
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Thursday, January 18th, 2007 AT 1:45 AM
Tiny
BOND343
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EGR has been checked and is fine. Fuel line and filters have been checked. Also, it is not vapor lock.
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Thursday, January 18th, 2007 AT 7:40 PM
Tiny
RASMATAZ
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Try the fuel pump relay if it has one-also check the actual fuel pressure when it dies out it shouldn't lose all the pressure within 10mins. Check your fuel pump connector-
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Thursday, January 18th, 2007 AT 7:50 PM
Tiny
COSMO
  • MECHANIC
  • 347 POSTS
Is your truck and auto or a 5spd?

Changed the hole distributor? You mean the whole thing not just the cap and rotor right?

Check the coil for leakage and corrosion on the bottom of it.

HAs a new gas tank been installed recently?

Cosmo. Mazda TEch
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Thursday, January 18th, 2007 AT 8:26 PM
Tiny
BOND343
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Truck is a five speed, whole distributor changed, no new gas tank, have tried pouring small amounts of gas into carb when truck dies to no avail.
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Thursday, January 18th, 2007 AT 11:04 PM
Tiny
COSMO
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Well then take a look at that coil.

I am also wondering what the condition of the sending unit in the tank is. Sometimes the sending unit gets small pin holes in the lines that cause the fuel pump/ carb to suck air into the lines causing problems.

Cosmo. Mazda TEch
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Saturday, January 20th, 2007 AT 9:16 PM
Tiny
RASMATAZ
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, have tried pouring small amounts of gas into carb when truck dies to no avail.

Your missing spark-otherwise it will fire up when you prime it.

Check for power at +pos term. Of coil-if present-now crank engine over and while a voltmeter or test lite at the -neg terminal-VM or testlite should be fluctuating/blinking-if not check the ignitor-if it is blinking check the rotor, cap, and coil wire and the coil primary/secondary resistances.

Also it might have an external resistor that's inline with the primary circuit.

HTH-Good Luck!
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Saturday, January 20th, 2007 AT 9:48 PM

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