It has a knock sensor -- should set a trouble code if it's not working (at least the turbo's have a knock sensor, anyway). Will never knock, but running with the ignition retarded murders milage.
One thing to check is the distributor shaft seal. If you have the engine with the distributor on the rear of the camshaft, the internal o-ring will eventually go bad and leak oil into the dizzy, with the predictable results (severe carbon tracking). Pull it and check -- if there's oil, you have to take the distributor shaft apart and renew the o-ring. Terrible PITA as they are usually VERY stuck, but worth it in better running. Peter On Sep 2, 2008, at 4:21 PM, R A Bennell wrote: > No idea how it might apply to this situation but I had an 86 > Suburban that pinged unless I ran midgrade fuel - > until I changed out the valve seals. After a bit of running it was > happy with the regular fuel and had more power > and made better mileage. Maybe the oil being burned contributed to > the carbon buildup? > > Do you get any blue smoke on first startup? That is what my truck > did and what caused me to change the seals. > > Randy > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of Jerry Herrman > Sent: Tuesday, September 02, 2008 3:10 PM > To: mercedes@okiebenz.com > Subject: [MBZ] Volvo > > > I also get pinging on my 91 volvo 240 even on slight uphill pulls. > If I > agree that it should not ping, what specific steps do I take to > find out and > then remedy the problem? > > Jerry > 82 240D (Now sold)I > > > _______________________________________ > http://www.okiebenz.com > For new parts see official list sponsor: http://www.buymbparts.com/ > For used parts email [EMAIL PROTECTED] > > To Unsubscribe or change delivery options go to: > http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > _______________________________________ > http://www.okiebenz.com > For new parts see official list sponsor: http://www.buymbparts.com/ > For used parts email [EMAIL PROTECTED] > > To Unsubscribe or change delivery options go to: > http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com _______________________________________ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
