This car was not started for four months due to an accident. Started two days ago idled ok but had irregular backfire with flame through tailpipe. Added more gas, HEET (enough for full tank which is what guage is showing) and Lucas gas treatment. Now on starting the engine backfires through the...

I am having a problem with my vette, it is having trouble starting and staying idle. I have to give it a little gas to start it and to keep it running? My voltage guage is also reading about 1 v low when this is happening?