Hi Ron One thing I would do is pull all plugs, and do a compression test without oil, and then with oil this is to see if you have a weak cylinder. With low compression you will foul plugs. Good luck Mel Stoltzman From: chrysler-300-club-international@xxxxxxxxxxxxxxxx [mailto:chrysler-300-club-international@xxxxxxxxxxxxxxxx] On Behalf Of Ron Waters From: Ron Waters [mailto:ronbo97@xxxxxxxxxxx] James - Fouled plugs means that you are burning too rich. Has nothing to do with hotter or colder spark plugs. It does sound like a vacuum leak. To compensate, the mixture has been richened to keep the car from stalling or running very rough, which results in the fouled plugs. As I mentioned previously, put a vacuum gauge on the intake and it will likely point to where the problem is. Ron From: 'James Douglas' via Chrysler 300 Club International [mailto:chrysler-300-club-international@xxxxxxxxxxxxxxxx] I pulled the NGK plugs with a #7 heat range. They have about 200 miles on them. The number 1 plug, I had it out and I cleaned it, before I drove back to SF it was worse than the clean plugs but not as bad as the darkest ones in the photos. As the photos show, some plugs show fouling. The engine is not producing smoke on acceleration or deceleration. I put in new plugs with a #5 heat range (hotter) and will see what I get. The idle feels a little better, but not dead smooth. Issues on both sides if you look at the photos. Next up is looking for vacuum leaks. James -- -- For archives go to http://www.forwardlook.net/300-archive/search.htm#querylang --- You received this message because you are subscribed to the Google Groups "Chrysler 300 Club International" group. To unsubscribe from this group and stop receiving emails from it, send an email to chrysler-300-club-international+unsubscribe@xxxxxxxxxxxxxxxx. To view this discussion on the web visit https://groups.google.com/d/msgid/chrysler-300-club-international/006801d94726%24c2e9c590%2448bd50b0%24%40comcast.net. |
Back to the Home of the Forward Look Network
Archive Sitemap