The 'before' was after a 3M black pad. That was going to take more like an air driven wire brush than steel wool. I saw clear coated media blasted aluminum at the shop that did the work and didn't really like the look. Did find a really professional looking custom auto shop in the back woods of North Georgia. Impressed me!
Now . . . back to the engine. I believe that the high idle was due to the throttle body vacuum tube dislodged at the last minute on the last installation. Now starts quickly, idles smoothly at just below 1k rpm, holds the rpm in gear but bogs down when throttle is opened.
Got my brand new 30 year old Craftsman Engine Analyzer connected to the Lambda test lead and measure a swing from 15% to about 27% on the 6 cyl scale at idle. That sorta corresponds to the O2 sensor voltage swing of 0.5 to 0.8v that I saw a few days ago. The idle does swing 50 rpm but not nearly much as represented by the O2 sensor voltage.
The 'fault' chart keeps pointing me back to CO adjustment but eBay has not come up with an appropriately priced meter. John Lane says adjust to 0.7v for an 1% CO. Mine will not stay stable below max voltage. Trying to adjust to 0.7v results in the above referenced swing.
I think I have acquired the parts necessary to create a fuel pressure gauge. Tomorrow . . . tomorrow.
Question of the day:
The custom shop owner is a really nice guy and estimates that the total cost of doing what I described to him can be done for $60 - $80. Should I pay to have this done or go buy the Harbor Freight blast cabinet and media for about $130?
Now . . . back to the engine. I believe that the high idle was due to the throttle body vacuum tube dislodged at the last minute on the last installation. Now starts quickly, idles smoothly at just below 1k rpm, holds the rpm in gear but bogs down when throttle is opened.
Got my brand new 30 year old Craftsman Engine Analyzer connected to the Lambda test lead and measure a swing from 15% to about 27% on the 6 cyl scale at idle. That sorta corresponds to the O2 sensor voltage swing of 0.5 to 0.8v that I saw a few days ago. The idle does swing 50 rpm but not nearly much as represented by the O2 sensor voltage.
The 'fault' chart keeps pointing me back to CO adjustment but eBay has not come up with an appropriately priced meter. John Lane says adjust to 0.7v for an 1% CO. Mine will not stay stable below max voltage. Trying to adjust to 0.7v results in the above referenced swing.
I think I have acquired the parts necessary to create a fuel pressure gauge. Tomorrow . . . tomorrow.
Question of the day:
The custom shop owner is a really nice guy and estimates that the total cost of doing what I described to him can be done for $60 - $80. Should I pay to have this done or go buy the Harbor Freight blast cabinet and media for about $130?
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