I've tried 3 different HEI distributors. How could the same problem be present in all 3? That's what makes me think the distributor isn't the problem. And yes when checking wire continuity I wiggled them when tested and every wire passed the test. I did run in the dark and misted water and could not find any arcing.
the problem isnt going to be in the distributor, but rather somewhere before the distributor.
Like where? I've jumped the distributor straight to the battery before with no change
well then it sounds like you have taken care of everything. you have fuel, you have spark on time, and you have no vacuum leaks, so unless you havent run a compression check, and you are sure that your valves are sealing properly, then you missed something somewhere if you still have a miss.
Since you do not like electrical answers, how much play do you have when you twist the rotor, not accounting for the spring and vac advance? If the gear on the cam is worn or the timing chain is loose, the timing can fluctuate and cause problems. That can be also checked with a timing light and 90 degree marks on the Harmonic balancer.
Since you do not like electrical answers, how much play do you have when you twist the rotor, not accounting for the spring and vac advance? If the gear on the cam is worn or the timing chain is loose, the timing can fluctuate and cause problems. That can be also checked with a timing light and 90 degree marks on the Harmonic balancer.
well then it sounds like you have taken care of everything. you have fuel, you have spark on time, and you have no vacuum leaks, so unless you havent run a compression check, and you are sure that your valves are sealing properly, then you missed something somewhere if you still have a miss.
I checked the rotor play today and it looks like it has 5-6 degrees before the rotor starts turning. Does this mean the timing chain is bad?
Here's my compression numbers I got today.
#1 150
#2 150
#3 140
#4 150
#5 155
#6 155
#7 155
#8 140
your compression numbers look good, 15lbs from high to low is good.
it is possible that your chain is loose.
Are you sure the carb is adjusted right? ..in the vid when you rev the engine i can hear it suck in air..like a vacuum leak or a carb that's not getting the right amount of gas when you rev it. It does not sound like ignition missfire it sounds like fuel to me.Here's some videos I took awhile back.
Here's my vacuum guage reading.
View: https://www.youtube.com/watch?v=y1UVNx2n9xM
Use headphones on the one you can hear the "bump" noise.
View: https://www.youtube.com/watch?v=pXS9jMwA21A
I was reading the post and that tapped hole in the back of the block looks like the hole for a knock sensor....are you sure the block and cam run on the ho firing order. Just asking because I bought a mustang once that ran like poop....it had a regular 5.0 motor and the plug wires run for the HO. Swapped wires and it ran like a truck.lol
Are you sure the carb is adjusted right? ..in the vid when you rev the engine i can hear it suck in air..like a vacuum leak or a carb that's not getting the right amount of gas when you rev it. It does not sound like ignition missfire it sounds like fuel to me.
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