I have a Rheem HVAC classic 90 that will not light

The electronic igniter will not lit the burners

I have changed the igniter and still will not work

I can light the burners with a match but when it gets to temperature it will not light for the next cycle

You should have a blinking light on the control board and will tell you what part of the system is malfunctioning

No never try to light the burners with a match. Your safety switches are doing their job. Check the intake and exhaust on the furnace for restrictions, check the condensate drain for restriction, those two along with the inducer motor not running will keep the pressure switch from closing and in turn keep the ignitor from glowing.