I just finished rebuilding my 302 for my 1990 mustang 5.0. It is bored 0.30 over. I fired her up, bleed the cooling system & set the timing to 10 degrees. My concern is once the car warms up it doesn’t like to start. It has good fuel rail pressure, new injectors, pump, and fuel filter. I feel like the injectors are not firing. When I tap the gas and crank it fires up but it is a rough start. Then as it idles at 750rpm it’ll rev up to 1000 rpm for a few seconds then slowly come back down to 750rpm. There is no vacuum leaks. I got KOEO codes.
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Vehicle is stock besides bored 0.30 over and BBK headers with BBK Catless H pipe and flow master mufflers.
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67
81
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Vehicle is stock besides bored 0.30 over and BBK headers with BBK Catless H pipe and flow master mufflers.