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MazdaSpeed 3 - How-To's MazdaSpeed 3 - How-To's - Want help out fellow owners? Post How-To's to simplify future installations for others.


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 Old 08-12-2018, 04:28 PM   #1
 
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Default Car won’t start

So I have a 2007 Speed 3. When I bought it the car had a random misfire. I changed the coil packs and properly gapped the plugs, new plugs ofcourse. Then there was only a misfire in cylinder 3. Before I changed the plugs and coil packs I noticed the misfire after that the car drove perfectly fine. Next thing I figured to check were the injectors. The injectors were first but they still worked. I tested them. The injector seals were really thin so I got cocksport injector seals. I’m this process I took out the battery, then I too of the intercooler piping for the FMIC. Took off the throttle body but kept it connect to coolant lines and put it to the side. Took off the intake manifold while unplugging all connections that were in the way. Too off the fuel rail and finally the injectors. When I put it back together I went in reverse order. Side note, on of my friends who insisted on helping kept playing with the throttle body opening and closing it. So after I put everything back together I noticed that there was a wire to the batter. A red thick wire. It was connected to the positive but I could tell because the wire was buried and wrapped around. I connected it to the negative and there was a spark. I later realized that it was the ground for the throttle body. Okay so everything is back together and I got to start the car it doesn’t start. Crank but no start. I look over everything, it’s all connected and the throttle body is making a humming noise. Now the car only stays on if I rev it but it then dies. Did I miss a ground or is the throttle body messed. Need help!!! Thanks guys
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 Old 08-12-2018, 11:32 PM   #2
 
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Look for blown fuses while crossing your fingers.
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 Old 08-13-2018, 05:30 AM   #3
 
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I only have two wires going to my battery. A red (+) and a black (-).
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