WHOA BRO...before you get more frustrated, let me play devil's advocate..."no fire changed everything..." what led you to start changing parts without posting your diagnostic troubleshooting plan in your original post. Fire means 3 things are needed, ignition, fuel and heat (compression). Before throwing parts at a problem, you "SHOULD" use at least two diagnostic methods to determine if some part is bad. For example, did you determine no spark, i.e. pulled plug wire, inserted a bolt and gap near engine bare metal approx. and SAW no spark? The presence or absence of spark would say that plug was not getting ignition, but BOTH would have to be bad before you could say the ignition was fault (1 cylinder working would give you fire). Sounds like you were throwing parts at it before actually determining if ignition was fault, could just as easily be no fuel...so REWIND and troubleshoot with check off list of basics, determine if it IS ignition, or fueling, or lack of compression before leading yourself down the merry path...a poster went thru what you did before he realized he was not getting fuel, turned petcock to reserve...NEVER MIND!