I'm having an issue with my 1982 toyota pickup with back fire?? It's a R22 engine.. Where do I start ??

What is your question?

I've changed cap rotor new plugs wires... Not sure why it would start back firing?? It has been sitting for 6 months prior to that I drove my pickup no problem... No back fire.. any help would greatly appreciated..

What makes this problem better or worse?

When I start it press the gas pedal it starts to back fire

How long has your 1990 Toyota Pickup had this problem?

It's been 6 months since I last started it.. I'm now trying to get it fixed any help would be greatly appreciated..