Code 11 no start

[97gtp]

I was in the wrong section before- I'm reporting this in hope for help! does anyone have any insight in this issue:(
hi all i am posting here because i cant get any help on any other forums and this seems like a forum with a ton of info! i have a 1990 300zx 5 speed 2 seater with t tops. the car has 174k. i had just bought it from a guy and it had a bad knock sensor and a bad fuel injector after replacing the injector one day, i went to fire the car up and i heard a clunk and it stopped. after that it doesnt try to turn over. id let it sit try again andit had tried to start then clanked to a stop again. i recieved a code 11 and had thought okay timing belt snapped s***, i took off only the drivers side cover and it all seems tight and the belt doesnt look old. i peeked under the upper passenger side cover and from what i can see the belt under there seems to be nice and firm to. so i then replaced the cas. still no start. i then read to test the cas by marking it and then turn the spindle and i should see the spark plugs firing( i pulled a plug and confirmed) and i should hear the injectors clicking which i do, if it does all this that would indicate a good circuit and CAS wouldnt it? i am stumped on this issue. i have reset the code 11 several times and it always comes back, the car is dead set on 11 but i have no clue. heres a video of the car trying to start, it doesnt even try anymore. battery is an expensive brand new aswell ptu was relocated and brand new from z1. also when i was turning the cas to show in the video. it made a strange noise that i havent herd any other time i had tried spinning it.
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[Phan]

well if that's the case then it could be anything. how about scanning the smaller things first like connectors, wires, etc... then work your way to the more complex. it can be as simple as a damage connector or a cut wire. So just start skimming through all the components one at a time and report back to us :O)

[nissanfreak12]

Have you tried rotating the engine by hand?

Are you sure your not hydrolocked with fuel from the bad injector or another bad injector or a pinched o-ring?

Remove all spark plugs and see if one cylinder is filled with fuel, if it is turn it by hand with the plugs out. That will get some of the fuel out and just let the rest evaporate or find a way to suction out the rest. While you are doing that check to make sure you didn't pinch an oring putting the injector in

Code 11 could well be a faulty CAS, but check for green corrosion first on all connections and clean.

[97gtp]

Thanks guys! I will try these ideas. I'm sure by now there is a build up of gas in the cylinders. I will remove the plugs clean them and try to get the gas out of there is any. All the connectors have been clean, my battery connections are complete crap but all other grounds look pretty good. I will report back to or row sometime, I work 24 hours today and wot be home till the morning! Thanks guys I really appreciate all the help!

[Ziggy1621]

I agree with NissanFreak. Chances are the oring on the injector wasn't installed properly and you are hydrolocked. Get the gas out and clean your plugs, then like he said, clean up your CAS connector/plug. If that doesn't clean the Code 11, then see if you can find someone locally to let you borrow a CAS to test out.

[97gtp]

I have two cas'. one that I thought was bad at first, and I bought a used one that was gauranteed. If I take the cas off and turn the spindle the Injectors click,spark plugs spark and I hear a fan of some sort come on. Wouldn't that indicate that the connections from the cas to the Ecu is okay? I think the fuel lock thing may be dead on, and that os probably why ot doesnt crank andy more. What does the o-ring thing I keep hearing about look like? Is it The rubber seal around the Injector or is this something in the injectors hole?
Thanks guys I get off work tomorrow morning and ill be back at it.