I have civilian ignitions and run the same NGK plugs that you do. I've also tried running Bosch plugs and had the exact same problem. (I use 20w50 oil too)Hotzenplotz wrote:Have you converted to civilian ignition ? What make and model of spark plugs do you use ?Twin Pinzies wrote:...but they still foul plugs. (WTF?!)
I'm now fussing with my float levels (they were high) to try to solve the continued fouling problem.
I have a civilian setup and use NGK BKR6EKC in the Alps betwees sea level and 2700 meters altitude.
The thing is, my trucks run PERFECTLY as long as they don't do any steep descents. My fouling spark plug problem is somehow directly caused by long, steep descents.
Through the process of elimination, I plan to finally solve this nagging issue.
So far I've swapped in the correct jets, balanced the carbs, and adjusted the float levels... which has helped them run better... but I still need to pull and clean the plugs (on BOTH of my trucks) every three days! If not, my trucks will end up running on two or three cylinders right after a long descent... until I pull and clean the plugs again!!
They (both trucks) have never (ever) acted up after driving uphill or on flat terrain.