22-06-2023, 09:06 PM
Hi
It sounds as though you had the sense of rotation of the plug leads reversed on the distributor cap. This will make the engine run on 2 cylinders e.g. 1 and 4, the other two will get a spark at the top of the exhaust stroke, which may or may not ignite the unburnt mixture on its way out to the exhaust and cause popping and spitting.
I'm surprised it idled properly, but glad you got it sorted.
I recently spent the best part of an afternoon trying to get a friend's Jaguar XK120 6 cylinder engine to run up on all cylinders, after sitting for 5 years after a rebuild while the rest of the car was restored. Eventually we found out that he had bolted the flywheel on 180 degrees out. The true timing was only discovered by watching one of the exhaust cam lobes through the large hole for the oil filler cap.
It sounds as though you had the sense of rotation of the plug leads reversed on the distributor cap. This will make the engine run on 2 cylinders e.g. 1 and 4, the other two will get a spark at the top of the exhaust stroke, which may or may not ignite the unburnt mixture on its way out to the exhaust and cause popping and spitting.
I'm surprised it idled properly, but glad you got it sorted.
I recently spent the best part of an afternoon trying to get a friend's Jaguar XK120 6 cylinder engine to run up on all cylinders, after sitting for 5 years after a rebuild while the rest of the car was restored. Eventually we found out that he had bolted the flywheel on 180 degrees out. The true timing was only discovered by watching one of the exhaust cam lobes through the large hole for the oil filler cap.