stumped

[Kent McLean]

PeterBergin at aol.com wrote:
> When mine did that years ago, I spent some $'S on the usual suspects.   
> Brought it to shop and put a scope on it.  Was cracked porcelain on #1  plug.  
> All I could see was a very very light brown line on the plug.   Mine missed 
> only under load.

Shade tree mechanic approach -- some night take it somewhere dark,
open the hood, leave it running, and look for sparks near the plug
wire joints. A fine mist of water from a spray bottle might help
expose any stray electrical seepage.

-- 
Kent McLean
1990 V8 w/5-speed and other mods
1991 200 TQA #3, with mods
1999 A4 Avant, V6 Tiptronic
gone: '91 200 TQA x2, '94 100 S Avant, '89 200 TQ "Bad Puppy"