View Full Version : oil fouling

09-26-2006, 03:20 PM
I have a 74 TR6 with 32,000 miles. The engine runs strong, no smoke, and has always been very well maintained. However, I have developed an occasional oil fouling problem on one plug. All others are clean. Is there a possible quick and dirty fix for this?

09-26-2006, 03:51 PM
Are you sure it's oil or is the cylinder just not providing proper combustion occasionally causing the cylinder to run rich and turn the plug a wet or fluffy black color? A pic of the plug would probably be a big help. My guess as a quick fix and I mean only a guess would be a poor condition spark plug wire or dist. cap causing intermitent combustion if it's combustion. If definitely oil a compression test or a leak down test on that cylinder might give you an indication of what internal problem(s) there may be and in general is not a quick fix.(sorry)