hello everyone,i'm twayne410 from florida

[twayne410]

hello and merry christmas

 

[dieseldane]

Merry Christmas to you too! And welcome to TRS!

 

[bobbywalter]

merrywelcome

 

[twayne410]

hello bobby,i have a 1994 mazda b4000 and it runs bad.i found that the coil is fireing weak on the 2 middle outputs of it and replaced the coil but new coil does the same thing.you wouldn't by chance know what the problem is?i have 2 ideas but not sure,thinking of the cam sensor or the ignition control module.

 

[bobbywalter]

runs bad means so much to so many.


obvious misfire? plugs indicate the issue? how did you measure the weak spark? wires tested good i assume?

fuel pressure is correct?

often vacuum leaks cause stumble along with false air to the air meter or simply a dirty air meter.

 

[twayne410]

i pulled the 2 middle wires off the coil and used a test light and there was barely any spark then i tried the other 4 and they sparked real strong.when i put a spark tester on the end of the 2 wires no spark is there unless you adjust it until it almost touches,but on the other 4 the tester was opened up over a 1/4 inch apart and the spark was strong. has all new ngk plugs and new wires