Quote:
Originally Posted by 68C101775
Good evening everyone looking for some advice,
My other problems include dropping way down below the normal idle speed after being revved.
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This is usually caused by the mechanical advance weights not returning completely every time. To verify this install your timing light and while watching the movement of the timing mark Rev your engine. Vary how quickly you Rev the engine and down. The timing should always return to the same number at idle every time. If not the changes in timing at idle are causing the idle speed to vary.
This is usually caused by weak or broken springs, and/or rusty or worn weights that won't travel freely.
Good luck with your truck it sounds like you have several issues to locate and correct. Please keep us posted on your findings.
__________________
Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help.
RIP Bob Parks.
1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo
If it breaks I didn't want it in the first place
The WMB repair thread
http://67-72chevytrucks.com/vboard/s...d.php?t=698377