My SUV listed above starts and runs great but backfires under a load. Sometimes it will hardily drive, other times I am able to drive it fine. We recently changed the fuel pump. The MAF reads 6.3 g/s at idle then goes upward 45-50 when accelerating. All voltage is good on O2 sensors. I'll have to check timing marks, cap and rotor. Any suggestions or ideas?
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Monday, July 17th, 2023 AT 3:16 PM