okay cylinder number 2 is lean, plug looks brand new

pulled injector out cleaned, manually pulsed it seems fine, squirted some sea foam deep creep in it and it squirted it out.

harness for the injector pulses on the ground as all the rest do.....

but cylinder is not firing due to no fuel... bad injector even though i watched it squirt?


im trying hard to figure this car out and finally seem to be coming towards the issue.

 

Glad to see that you found what was causing the power loss !!! I now that its been a long frustrating task

 

Until someone gives you better advice than me what I would do is swap that injector for one that is at an easy plug to pull. That way you can see if it follows the injector. I would inspect the wiring and connector too with flashlight make sure no slits corrosion or anything that could be an issue.

 

There is also a trick for freeing a stuck injector. If I remember it uses a 9volt battery and you pulse it several times in a row. A google search might find you directions for that. Doesnt always work but sometimes is good. Good luck. Probably feels like light at the end of a tunnel.

 

If the injection is getting the single from the computer to spray the gas in cylinder #2 and your still not getting fuel to the plug maybe the intake valve spring is broke ???? causing the intake valve not to open.
I would recommend doing what slick1hunting said and swap the injector and see what happens
hopefully its just the injector and not a bent valve and your sure your getting the pulse from the harness.
dude you have to get a picture of your rancher on 28's make a album !!!!
I ride a Honda 400ex white brothers exhaust , jet kit twin air. Have you road the dunes at N.C outer banks ???? since your so close to the coast Lol

 

swapped injectors and issue is still there....... burnt valve???? how can that be with good compression????? broken valve spring i dont know ive had the car running today without valve covers just to check lash and everything looked in order........

 

Probably should have continued this thread....

https://www.camaroz28.com/forums/lt1...s-test-870815/

......rather than starting a new one.

 

First of all a compression test of one cylinder without doing any others is meaningless. What ever number you get could be way out of the ball park. No way to tell without the others.

Second in addition to having the throttle wide open, you must keep the injector from spraying and F'in up the reading while doing a compression test.

Brings up the next point. If you are not firing that cylinder, why would you expect the plug to be anything but white (new looking). In other words, if it were firing but is lean, it would be cooked, not looking like it was new(ish). If you put a new plug in a cylinder that never fires, the plug will look like it did when it was put in.

You need to confirm that cylinder is either firing or not. Use the injector clip while it's running.

Another point. I searched everyone of your last three threads and never once did you say anyone checked spark on any cylinder. You did say it had compression (125PSI) and the injector was functioning properly. (good spray pattern) I believe you said. So if compression is ok???? and fuel is spraying, what's left?

Last point. I understand you don't want a real long thread (say 4 pages) to go on for ever and want to start a new thread. So we don't have to jump from thread to thread to thread to find out what you did and did not do. Do this, at the beginning of the new one, put all the details about what you observed and what has been done so we don't have search all your threads.

First confirm the cylinder fires or not. If it is not, then confirm the plug has spark that's in there. The absolute best way is to use an inline spark tester since a plug can show spark out of the cylinder but under compression may not.

Then progress from that point.

 

Speedy makes a good point. Confirm that the plug is white and not just new looking. I've seen white plugs on an old motor cycle of mine and it is decidedly bad news. In that case, the cylinder was running super lean and the piston actually cratered. It wasn't far from a hole!

I'm not sure I agree that the injectors fueling the cylinder during a compression test matters but it can't hurt to pull the injector fuse before rerunning the test...

 

okay i will not make anymore new threads until the issue is fixed im sorry.

i have checked for spark with plug outside of cylinder and it did in fact have spark. So i will do what yall said and get an inline spark tester. and test from there as well as pull injector fuses and re check compression.

The car runs crazy rich and has no power when warm..... i will pull the number 2 plug back out in the am to see what it looks like. (i switched injectors to see if it was injector issue or electrical even though the harness has the pulse and 12v)

Thanks for the advice again i dont want to give up on the car its very clean.

Merry Xmas to everyone on here i will post results tomm!

 

okay indeed i have a spark tester now cyl number 2 deff has spark. now it sounds as if i am getting spark knock while reving car up. any ideas

 

Have you confirmed all cylinders are firing?

 

alright everyone updates on my issues


strange idle while shifting gears still pending

lack of power (fixed today it was indeed the o2 sensors which i finally found a way to get them out)

the injector issue seems to be fixed i did the ol wrapping of the injector with a screwdriver and everything appears to run better

I may need to look into new wires soon as they do not look the greatest.


I want everyone to know that i am thank full for all the help, suggestions, and pointers. I drove the car for a bit today after the o2 change and it seems the more i drove it the better it got with response and power. Only code i have now if IAC for higher voltage too high of rpms. I did remove it and clean it to still recive the code. thats most likely my strange idle i have.

Again everyone thank you very much two huge thumbs up to everyone!

 

just in case anyone wanted to know that a stopp'd up air filter will cause tons of issues.....i took mine out today to check the bolt on the bottom of the ram air setup because it was loose and bam to my surprise the air filter in the car (std fram) was full of crap in between the ribs. i put a shop light behind and it could see about no air.....

Figured id take the car for a ride and it pulled way harder than before. Im sure i just fixed a HUGE prob ive been having. I guess sometimes you got to look at even the things you would doubt being wrong......

 

Yep sometimes the little things can make a big difference