Re: [T3] Tune Up & Brakes

[Steven Ayres <comwest@well.com>]

JMac=> it will ping if I hit the accelerator to get it up to speed (not 
=> too badly), but it won't ping at cruising speed below about 62. If 
=> cold, she's a tigress.  Whomps around like a new car.  

This sounPa嚇 like too much spark advance. 

=> (check advance with a timing light) How is this accomplished?  

It's easiest using a light with an advance dial. Reconnect the vacuum, 
rev the engine to full advance, adjust the advance dial to line up the 
timing mark at TDC, and read the advance off the meter. 

With a fixed light, you have to use a protractor to make a 30-degree 
mark on your pulley, then read it with the light at full advance to 
determine how close you're coming to the mark. 

Alternatively, you could experiment with retarding the timing by a few 
degrees and retesting until you find the right balance between idle and 
ping. 

Steven Ayres, Prescott AZ
'66 Grosse Karmann

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