4.3L Vortec Getting a Rebuild
#261
Alright thanks Les, I got back out there and connected the scanner again, I was getting a reading from everything, and even saw my maf going up when I cranked the engine, but RPM's stayed steady at 0. Next was hooking up the spark plug to the coil, now I'm getting a spark but I'm no expert with this so please tell me how it looks in the video Les.
#262
Crank sensor is definitely sending a signal. Failure to read RPM must be due to your particular scanner. I'll take a video of mine with a spark plug on coil output tomorrow for comparison. Please go ahead and video your engine trying to run.
Last edited by LesMyer; 05-17-2022 at 10:52 PM.
#263
I remembered reading that it's supposed to be a nice bright blue for a healthy spark... that looked orange to me...
not sure where to go but following! This is a bummer after such hard work... but les will definitely get you back on the road!
not sure where to go but following! This is a bummer after such hard work... but les will definitely get you back on the road!
#264
#265
Thanks Les, it got dark yesterday however when I get home later I will start it up for you. I find it weird still because I know for a fact I have read RPMs off my scanner before while it was running. I'm not even sure what to think now, I will look at the tach when I start it up later and make sure it moves when it starts. Other than this I'm thinking I will need a scanner capable of reading cam retard? Or I could go slide the PS bracket forward so I can take off the valve cover and verify #1 at TDC?
#266
The strategy could be to move the rotor 1 distributor tooth and see if things improve or gets worse. Depending on results then we know which way to go. I still think its rotor position and slipped balancer (but not 180 out or it wouldnt run at all)
A strategy to check for slipped balancer could be to remove the bottom pulley/bolt, line up the marks on the balancer to the timing cover, and check the position of the keyway in the crank snout. Should be at about 1:30 (see diagram). I found this position again and again for the keyway, but this diagram showed it the best.
A strategy to check for slipped balancer could be to remove the bottom pulley/bolt, line up the marks on the balancer to the timing cover, and check the position of the keyway in the crank snout. Should be at about 1:30 (see diagram). I found this position again and again for the keyway, but this diagram showed it the best.
#267
#269
Thats good to hear!! Guess you should have tried it twice before!!!!
So no SES light?
Got that stuff to read cam sensor retard coming? Really needs to be checked.
In the meantime revel in success!! Enjoy what you have accomplished!! Congrats!!
So no SES light?
Got that stuff to read cam sensor retard coming? Really needs to be checked.
In the meantime revel in success!! Enjoy what you have accomplished!! Congrats!!
Last edited by LesMyer; 05-18-2022 at 09:26 PM.