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Sparks coming from exhaust . Clogged cat or ignition?
my fd was in storage for 2 months. Took it out and she ran great. All of a sudden at a light it bogged down and stalled. I started it back up easily but has loss of power. Pulled in parking lot and I saw I was shooting sparks- embers from exhaust. It stalled. I got out to see the inside of my racing beat muffler glowing. I have a pre cat delete, and new stock cat (air pump removed) and a stock 13b tt engine. Once I let it cool off it started and ran perfectly Normal. Is this a bad cat? Or I’ve read about coil ignition issues causing his.
I figured out the problem today and the FD is running great. I read an archived article online about somebody having similar problems and it was when the ECu heated up there was a bad solder on the circuitboard and you would get a messed up signal to your ignition basically. The sparks coming out my exhaust were fuel that wasn’t going Thru complete combustion. I pulled the ecu apart and there was a black spot on the circuitboard. Replaced it with a stock ecu and it’s perfect
^Wow, very good for you! Congrats on solving the problem.
Btw, for your stock cat to achieve long term reliability, I believe it is necessary to have a working air pump. Maybe someone else will chime in here to clarify or affirm.
Last edited by Topolino; Apr 29, 2018 at 08:47 AM.
