[bobspace]

I thought my car was finally running well :-(

After replacing my ignition points with a pertronix ignitor, and tracking down the RF interfering components and replacing them with non interfering versions, it seemed like my car was FINALLY running well.

But it's developed a new problem: When accelerating under load, the engine won't rev past around 4500. At that point it starts popping and sputtering and won't rev any higher. The issue was sporadic for a few days, but now it's consistent.

This only happens under load. When the car is in neutral it revs fine.

Is this another ignition timing issue? Something else?