To clarify, this is a B16A head, B18C block, and 9 psi of boost.


Well I got it started and the new motor was running fine for a while last night. I turned it off and started it back up. I rev'd it up a bit and put it in gear while it was on jack stands.

1st gear was good and moving. I put it in 2nd and I let the RPMS drop a bit and I got on it again and it got to about 4,500 rpms. I got on it a little more, 5,000 to be exact, and then I heard a pop. The car stumbled and shut off.

I went through and checked all the wiring, checked for leaks, checked for smoke... Nothing. I went through and checked all the electrical / ignition. I checked the new spark plugs. They were covered in gas, which was expected. The car is tuned for a full B16 setup, I now have it setup as a B16 head / B18 block and Edelbrock intake manifold and 70mm throttle body. Well I checked the plug wires. Nothing seemed off. But when I started the car again, it sounded like a Subaru WRX with exhaust.

For some reason I accidently touched the turbo manifold, and all of the runners coming from the block were hot as hell, which was expected, EXCEPT #4 I took out the spark plug and the wire. Turned the car off and saw a weak spark from the ignition for the #4 spark plug. I took out the next plug wire and put the plug into the wire and did the same thing. Same result, the plug set off a weak spark. I ran to the autopart store and bought a new set of plugs and new wires. Came home and installed them and I got the same results. Went back out today and bought a new dizzy cap and rotor and installed those and I'm getting the same results. The same "Subey" sound... Is it possible I have an injector stuck open or something. I can take out the plug and smell the gas in it.

I have no check engine lights, no bad sensors or anything.

Any help is appriciated.

 

do a compression check on all cylinders to make sure theres nothing wrong internally,just to be on the safe side. if your smelling gas then most likly its not rich but rather some of the cylinders isnt firing for some reason

 

If you think you are leaking fuel through an injector, hook up a fuel pressure gauge and prime the system. If the pressure dives off fast, you have a leak somewhere, which could be an injector.

Might want to check the ignition coil resistance, if it overheated they can make a popping sound and short secondary windings together, resulting in crappy ignition voltage. Sometimes they get so hot that you can see burn marks on them.

It takes around ten seconds of arcing from an open plug wire to fry a coil that is not cooled in some way. (like oil cooled coils)

 

Sometimes they get so hot that you can see burn marks on them.

true, i have seen burn marks or cracks on them