The Ford Barn

ronchamblin · 04-01-2017, 07:15 AM

I sense some ambiguous data offered by me. Am working today, but tomorrow I shall do some "solid" testing, including a "leak down test on No. 7". BTW, the 45 lbs referred to was an experiment at idle speed. All cylinders seem to have read about 45 lbs at idle, including No. 7. This morning, while cold all cylinders on the left side read from 90 to 110, the number 7 being the 90. But, I shall return tomorrow with clearer date, as I think the situation requires it. At this point, I've not seen any power strokes from No. 7, as when the wire is removed, there is no change to RPM, or vibration. Also, last night, while idling, I sprayed "starting fluid" all around the intake manifold on the left side to see if RPM increased, indicating a leak. There was no change in RPM. As I said, I will do better test data for Sunday.

04-01-2017, 07:15 AM	#11
ronchamblin Junior Member Join Date: Aug 2013 Location: Jacksonville, Florida Posts: 13	Re: No. 7 Cyl never gives evidence of a power stroke on '46 Flathead I sense some ambiguous data offered by me. Am working today, but tomorrow I shall do some "solid" testing, including a "leak down test on No. 7". BTW, the 45 lbs referred to was an experiment at idle speed. All cylinders seem to have read about 45 lbs at idle, including No. 7. This morning, while cold all cylinders on the left side read from 90 to 110, the number 7 being the 90. But, I shall return tomorrow with clearer date, as I think the situation requires it. At this point, I've not seen any power strokes from No. 7, as when the wire is removed, there is no change to RPM, or vibration. Also, last night, while idling, I sprayed "starting fluid" all around the intake manifold on the left side to see if RPM increased, indicating a leak. There was no change in RPM. As I said, I will do better test data for Sunday.