ride wont fire

[Bullitt-]

Is it possible the exhaust pipes are plugged up? 

['Cuda Hunter]

Mufflers did not sound plugged when it wanted to start.  I will check that though.

I have not done a compression test yet.  That is very close on the list.   However when I had number 1 out and I was cranking it was definitely throwing gasoline into the air.  But I assume a low compression motor would still have compression enough to throw gas into the air. 

[HP2]

Check it and see. I had a '76 Aspen once that had the same symptoms. Chased my tail on it for a while until I pulled a compression test, it was less than <40 psi. Enough to feel when I stuck my thumb over the spark plug hole, but not near enough to actually fire and run.

Honed the cylinders and put new rings in it and it fired up just fine. What I thought sucked was 360 rings were $60 for the set. 350 chevys were $20. I got the chevy rings and filed them to fit. Worked fine for a junkyard build.

['Cuda Hunter]

guess that is where I am at.  I'll try the compression test next.

Chevy rings huh?  You crack me up HP.

['Cuda Hunter]

Yep, should have just checked the compression first.  I'm not used to an engine having compression problems.  I've started probably 100 motors without compression problems.
Just so happens this and the last two cars I purchased have had no compression.
This one seems to just have stuck rings.

25   25
50   30
25   50
25   25

So, what can I use in the pistons to free those rings up?  I've sprayed a little WD while I had the plugs out and got number one to jump from 25 to 50 then to 55. 
I've been told to use Sea Foam in a spray can and that will eat the carbon and crap up and free those rings. 
Can someone tell me what to use to get the rings to come loose without taking the motor apart. 

I know, last ditch effort. 

[js29no]

Kerosene and transmission fluid mixed together! what I used to free up A seized engine once, what have you got to loose. 

[HP2]

Kerosene and transmission fluid mixed together! what I used to free up A seized engine once, what have you got to loose. 

I've heard of this approach as well. Might be worth a shot. I've also heard of using Comet/Ajax in a water solution squirted into cylinders and turned over manually to perform an assembled hone job once you free up the stuck rings.

[acudadude]

Also CorrosionX  works good and PB Blaster
http://www.blastercorp.com/

http://www.corrosionx.com/

[HP_Cuda]

I've also seen folks use diesel in the cylinders and try to spin it.

[mopar70maniac]

just went thru this with my 73 challenger, here's what it was for me... first off the boot plug that connects to the ecu is very tight fitting, making it hard to connect... the screw and nut that hold it in were in a psition that made it hard to put boot on completely, so I readjusted the nut and spread out the openeng to allow complete contact and only put the screw in after plug was seated... next my starter relay was faulty, the voltage drop was preventing the 9.4 volts from getting to the coil during starting... also key must be used during starting as there is a seperate wire from the switch (brown I believe) that bypasses the ballast resistor during cranking ( key in starting posistion). I'd imagine you can hot wire t straight to the ballast as others have mentioned. I learned all of this from this group and am very greatful for all of the responses I have received!

[mopar70maniac]

I had the same problem, turned out to be the ecu connector wasnt plugged in far enough.... even though it may look like it is.... I had to tinker with the screw and thread to make sure it didnt bottom out before connection was made.... back the screw out all the way, push connector on as far as possible, then screw in the screw... hope this helps! also, changed the starter relay....