TheJMan
Well-Known Member
- Joined
- April 5, 2003
- Messages
- 545
- Reaction score
- 0
- City, State
- Scottsdale, AZ
- Year, Model & Trim Level
- 2009 Mazda 3 Hatchback
Last weekend I installed a set of Torque Monster Headers, E3 Spark Plugs, and Taylor Thundervolt wires. After the install, everything was great. However, last night on my way home from school, I noticed what I thought was an unusual transmission shift from second to third. Also the engine seemed to sound flat and lacked power. I got home and it puttered, backfired, and shook the whole car.
This morning I removed every plug, checked for any unusual wear, which I didn't find, and made sure every plug was securely tightened down. This did not seem to fix anything, as it still backfires, pops, and putters. I also returned the ECU back to stock, which didn't change anything. Checked the wires, everything looks fine. The CEL has not come on at all during this problem (which I was hoping it would so I can figure out where the misfire is coming from)
My next plan of attack is to replace the plugs with the old Autolites I have to see if that changes anything.
Anyone else had this problem before?
This morning I removed every plug, checked for any unusual wear, which I didn't find, and made sure every plug was securely tightened down. This did not seem to fix anything, as it still backfires, pops, and putters. I also returned the ECU back to stock, which didn't change anything. Checked the wires, everything looks fine. The CEL has not come on at all during this problem (which I was hoping it would so I can figure out where the misfire is coming from)
My next plan of attack is to replace the plugs with the old Autolites I have to see if that changes anything.
Anyone else had this problem before?