bad misfire Options

[SCCA Stang]

ok guys here we go....

after the winter operation of the cyclone intake to gain bottom end torque and turbo spool up....also while under the knife I swapped out the timing belt and tensioner.... I went to fire up the eclipse... it spit and sputtered and won't run worth a shit....

I have a misfire, but can't figure out why.

here are the specs.
compression 135 across the board
spark on all 4 - yes
injectors (550's) 2.4 - 2.5 ohms
B+ voltage at both side of the injector connectors
6.5K , 5.5K, 4.5K, 3.5K ohms on the 4 spark plug wires from longest to shortest respectively


so I have spark, fuel, compression.... all that is left is timing right????

after the timing belt job I spun the motor over by hand 6 times and every rotation I checked the timing marks and they were right on.

what is left????

[SCCA Stang]

Well problem resolved....

I thought the timing was off, but I just had the crank pulley 180 out, not the timing.... after re-installing the timing belt..... time to move on to boost leak tests again.....

I must have misread the first boost test as I was dumping all of my boost out of two massive cracks in the intake manifold.... I was also leaking from the previously sealed coupler and at the coupler at the inlet for my FMIC.

with all of these boost leaks sealed off and the intake manifold swapped over... I fired her up and damn it.... runns better but still misfired.... plug wires cross she was running on two cylinders.... but better than it was with the boost leaks.

fixed that and still had a misfire..... so I took it out and filled the tank with fresh BP 93 octane and threw some boost at it to see if I could clean up the plugs that were getting gas soaked and carbon fouled throughout this whole ordeal....

no dice.... still misfired, so I limped her home and pulled the plugs, 2, 3 & 4 cleaned up quite well under my boost runs, but 1 wasn't looking like it was firing at all..... so in went a fresh set of plugs and how bout that.... she runs like a champ now....

a huge thanks going out to NC Galant for all of your help this weekend..... I wouldn't be this far with out you.

Thanks, Ben