1986 Mazda Truck Mazda B2000 carb prob

Tiny
LAZZIN2002
  • MEMBER
  • 1986 MAZDA TRUCK
Engine Performance problem
1986 Mazda Truck Two Wheel Drive Manual 202000 miles

mazda b2000 stalls after it reaches oporating temp and wont start till cool.
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Tuesday, August 5th, 2008 AT 4:39 PM

5 Replies

Tiny
RASMATAZ
  • MEMBER
When it stalls out-do below immediately to determine if its a fuel or spark problem

Get a carb cleaner and spray into the carb or the throttle body on an EFI. Did it start and die? If not disconnect a sparkplug wire or 2 and ground it to the engine -have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel problem, check the fuel pressure to rule out the fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil, distributor pick-up coil, ignition control module, cam and crank sensors-
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Tuesday, August 5th, 2008 AT 4:47 PM
Tiny
LAZZIN2002
  • MEMBER
Thanks for youre info I had already sprayed the carb with carb cleaner and know its a fuel prob. Not shure if its the carb or what.
But again thank very much.
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Wednesday, August 6th, 2008 AT 4:42 PM
Tiny
RASMATAZ
  • MEMBER
Check the fuel pump pressure-this will point you to a failed fuel pump before you start blaming the carb or injection unit-If its a carb could be that the choke plate is not opening-remove aircleaner and look in there-when engine is fully warmed up it should be wide open-
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Wednesday, August 6th, 2008 AT 4:48 PM
Tiny
LAZZIN2002
  • MEMBER
Thats great advice I will start there and see what happens. It is indeed a carb and it my just be the choke.
Love this site and thanks for the help.
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Saturday, August 9th, 2008 AT 9:03 PM
Tiny
MULE50
  • MEMBER
I am having the same prob with mine and it has 250,000 on it. There should be a white wiring harness on the front of ur carb. It is one of the solenoids that is wired in it I have not found which yet. U can bypass them by using a wire from the positive on the ignition solenoid to the positve on the battery. Dont leave in just touch it to the battery a couple times it will click the solenoids and it should start back up. Do this after u warm it up
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Thursday, October 22nd, 2009 AT 5:02 PM

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