I'm not sure what is causing it, but for some strange reason, I'm shoot fire out of my exhaust ports.
I've got a 92 Ka24de
The valve cover gasket that keeps oil out of the spark plugs went bad. so we replaced that and went to start the car and it would not run. it was just turning over. then it started to make strange banging sounds. sounded like a clogged up cat. so we tryed to take the cat off, but the nuts and bolts were too rusted, so we just took the headers off to see if we could even get it to run. Thats when we discovered the flames. They are only about 8-10 inches long. It doesn't flame every time, it takes a few rotations before it shoots fire. on the flameless rotations, you can see an abnormally large amount of gas/black smoke out of the exhaust ports. Also on occation, it shoots up through the intake. We heard it bang through the intake, so we carefully held it so we could see in it, and there is definatly fire in the intake.
What could be causing this?
So far we have been told...
no spark,
bad injectors
cam timing is off
dist. timing is off
the ecu is messing up the dist timing trying to over compensate for something
the car was running rich due to lack of emissions. I hadn't had the oppurtunity to get the ecu remapped for the different ratios. so the ecu was trying to compensate for the richness. could it be that the ecu is just over doing it?
This is pasted my knowledge.

thanks for the help