bad ls1 injector? SS still dead

[V]

ok, my SS is still off the road, i just cleaned out my fuel system, there was something in my gas but not sure what exactly, but i fired the car up and still something is wrong. the OBDII codes dont really help much. all i got was a injection circuit malfunction and engine cylinder misfires, nothign more specific. anyway, today i finally pulled the cats back offf to track down where the fuel is pouring out from. When i pulled the drivers side, i found like an oily think substance, not oil though im pretty sure. i pulled the pass side and its reasonably clean and dry, so now i know the problem is on the drivers side. the cat seems fine and i put a flashlight in one end and i can see some light through it, so i know its not collapsed. from under the car i can look into the drivers side header and there is the oily black buildup in there too. and from the looks of it, it seems to be coming down from the #5 cylinder primary, possibly some from #3 as well, but 1 and 7 are dry. Now im thinking i could have a stuck or leaky injector, possibly caused by the bad fuel. My neighbors, a mechanic, came over and , we reluctantly decided to try to start the car with open headers just to see if the car ran better without the cats... BIG MISTAKE, lol, the result make me think about an open injector even more now, considering I almost barbacued my SS, luckily the front was on jack stands and the fire was mainly in a puddle on the ground and inside the collector of the header, and i lost by garage blanket i was using to lay on, lol. anyway...how can i check if an injector is bad or stuck open? is there an easy way? can i check the OHM resistance somehow? I already pulled the fuel rail and injectors from my ls1 parts motor and im going to change the #3 and #5 injectors, put the cats back on the car and see if therees any difference, just to make sure will any ls1 injectors work? i think my parts motor is a 99 or 2000, and my ss is a 2001, from what i know other stuff changed but the injectors should all be the same for an LS1... i just hope this solves my problems... if not, then i dunno...

[90FormulaWS6]

first check and see if the injector checks out with resistence between both poles... if its not the injectors then see if the injector is getting the signal from the computer it will send voltage to make the injector fire.
to check by taking a test light: put a probe and cut a slit in the wire or to the part that plugs into the injector which will be carrying the current and the other side to ground and see if it lights the test light, if it does then your gettin the signal and the circuit is good, if not then im all out of ideas for now

btw do you still have that 7k miles shortblock? Id like to buy it for $200 like you said

[JL8Jeff]

Sounds like it could be a fouled out spark plug and raw fuel is dumping out one cylinder and the other ones ignited it. Are any of your injector wires crimped or cut and grounding out? Strange coincidence that you just installed headers and now this problem. If it was bad fuel, it could have fouled out a plug.

[V]

well 3 drivers side plugs were fouled from when this all first happened, and 2 on the pass. side. but this weekend i just installed all new plugs and wires, and it started doing the same thing right away again. when i did the headers i was very carefull and didnt mess with anything on top of the engine. i even double checked everything just incase i leaned somewhere and moved something, but it was all good. The amount of fuel that came out of the engine when i fire dit up with open headers was way too much in my opinion, the puddle on the ground was about 2 feet long and a foot wide, and the car was only running for about 5 seconds. if the injectors werent firing, then i dont think that would have happened, also the SES light was off this time, when before it used to come on right after i started it up. Since i have spare injectors anyway, i think ill try those since thats the easiest now, and if that gets me nowhere, ill move on from there.

and yes i still have that engine, sorry i didnt get back to you sooner, with tryign to get my cars fixed and work, im going crazy. im still trying to get the reciepts to prove the rebuild, and yes ill include the lifters and retainers. as for running condition, i drove it off the flatbed and into my garage, thats all i know about it, it ran fine, but the car had major rust in the shock towers and floors so i didnt even think twice about keeping the car intact and driving it. As for delivery, im too busy with work and eveything to bring it anywhere right now.

[Batman]

Just be careful, 01-02 motors have marginally bigger injectors then the 00, so your cylinder will be leaner. (think the 00 was 26LB, 01-02 is 28.8LB)

[90FormulaWS6]

I can pick it up... give me a # I can reach you at and well set up a time for me to pick up the motor. As for proof of rebuild, it doesnt really matter since my rods are knocking something fierce and i need to get goin on the motor. If you get the papers for the rebuild and want to forward them to me when you get them, Id be happy to take them. Let me know.

Derek

[V]

well its not a concern anymore...engine blew up, #1 rod snapped in half and took out the oil pan and front engine cover, and who knows what else...so yeah...

[foff667]

ouch.

[JL8Jeff]

D@m! Something wasn't right for that to happen. Maybe too much fuel dumped into the cylinder and the resluting increase in compression was too much for the rod to handle. The question would still be why?