Robb Taglieri Your original email was answered on 9/17/07 by Alex Chamberlain who has a diesel. I believe most of the guys here are diesel owners. Gas cars are a different beast, you'll need to get codes pulled or build a LED unit to pull codes, your car is OBD I.
>On 9/17/07, Robb Taglieri <[EMAIL PROTECTED]> wrote: > I have a 1993 300E 2.8 with about 122,000 miles on it. It recently > went for NJ emissions testing and failed. My HC tested at 150 instead > of 100. I am told that the cause of this is not the normal tune up > but rather that something is defective. the car had a tune up in the > last 12,000 miles and I was wondering if anyone has any suggestions. > >High HC means unburned fuel---the engine is running too rich. A lot of things can cause this, but the first to check for >is a vacuum leak---could be as simple as a disconnected line somewhere. (Low vacuum makes the injection computer think >>>you're stomping on the accelerator all the time, so it dumps more gas in than necessary.) > >Alex Chamberlain >'87 300D Turbo >From my notes I have; High HC,CO & NOX = replace converter & O2 Sensor, verify tuneup and correct any fault codes. You did pull the codes? High HC & NOX & Low CO = Replace converter, tune-up & check lean Fuel Ratio, leaking exhaust valves. High HC & CO & Low NOX = Rich Air fuel Ratio, air injection High HC & Low CO & NOX = Run in converter, tuneup, oil change Check the emissions form from the test facility to which values are high and low. There is also and EGR tube issue with the car you have. James Zavesky 1991 500SL 1992 600SEL > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Robb Taglieri > Sent: Thursday, October 25, 2007 10:00 AM > To: mercedes@okiebenz.com > Subject: [MBZ] re;Knowledge & Kaleb C. Striplin > > Kaleb, Maybe I should remind you of what the list is about. > It is about sharing ideas and helping to troubleshoot 14 year > old cars... whether I paid for the listing or not. If I paid > for the listing up to this posting being "Now" very helpful > but for yours I'd be disappointed with the response. > This posting has gotten alot of feedback: The feedback I was > hoping for. > Maybe Kaleb, practicing alittle respect for others and trying > to be helpful may even help you in your own business. > Remember, this list was developed to help guys like me and > small shop owners with other guys experiences from around the > country chiming in. Smart ass's were suppose to be kicked off. > > Robb > _______________________________________ > 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
