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#16
07-31-2012, 08:42 PM
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Thanks everyone for the insight, this is exactly what I was looking for...
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http://i.imgur.com/XAP2j.jpg 
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#18
08-23-2012, 07:46 PM
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Are you missing the heater control arms?
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1962 220SE W111 Coupe, 2nd owner http://img.photobucket.com/albums/v3.../SideSmall.jpg The Coupe Group (W111/112 coupes and cabs) official website The Coupe Group on Facebook MotoArigato: Roadworthy News & Humor
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#19
08-23-2012, 08:18 PM
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Add to your wish list, replace the clock with a tach.
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Regards Warren Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL ENTER > = (HP RPN) Not part of the in-crowd since 1952.
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#20
08-23-2012, 09:07 PM
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Quote:
Only real way to tune the d-jet, except for an expensive exhaust analyzer! Neat car!
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Graham 85 300D  ,72 350SL, 98 E320, Outback 2.5
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#21
08-24-2012, 01:22 PM
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Quote:
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http://i.imgur.com/XAP2j.jpg
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#22
08-24-2012, 11:18 PM
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Actually, get a wide band O2 sensor and a gauge, you will know how your car is running.
Innovate Motorsports LC-1 and LM-2 WBo2 WideBand o2 Systems Megasquirt Kits / Assembled Engine Management Systems, Wideband o2 Sensor Systems and tuning products - DIYAutoTune.com MegaSquirt | Engine Management System | Electronic Fuel Injection - DIYAutoTune.com Plan to convert to Megasquirt.
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Regards Warren Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL ENTER > = (HP RPN) Not part of the in-crowd since 1952.
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#23
08-25-2012, 09:19 AM
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Quote:
 I meant a wide-band Air fuel ratio gauge. It happens I also have a fuel pressure gauge on my car, but that is not really needed after you check and set pressure. Setting pressure slightly high (say 32 instead of 29psig) can help with hot start problems, then adjust mixture to spec with idle on high side or even above specified range of 0.5-2%. In order to set the mixture on the D-Jet, there are two mixture controls. One is a knob on the ECU and that is only for idle mixture (throttle plate completely closed). The other adjustment is on the manifold pressure sensor (MPS). Both of these can only really be adjusted if the %CO in the exhaust can be measured directly or calculated from the air-fuel ratio (AFR). CO meters that actually work are hard to come by. There is a UK one made by Gunson in the price range of DIYers, but with modern technology, an air fuel ratio gauge that uses a wide-band oxygen sensor is a great way to go. You can get portable wideband units, but they are a bit pricey. It is also hard to get an accurate reading back at tailpipe because outside air can influence the readings. I had a bung welded into my exhaust at bottom of downpipes. O2 sensor screws into that. I mounted a permanent gauge on the dash so get a continuous readout of AFR. I bought an AEM unit for about $200. It has worked flawlessly since I installed it (3 or 4 years ago ?) Muffler shop welded in the bung for $50.00. At the time, Innovate only had the portable units, but they too now have a gauge as shown here. If you get around to doing this, I have some charts that allow conversion from AFR to %CO as well as the CO specs for the 72 D-jet at idle and under various loads. some pics:   PS: Before you do anything, make sure your AAV (aux air valve) is not sticking. PPS: A good reference for these engines, is a thread in Benzworld 107 forum (scroll down to D-Jetronic section - last link by Proctologist is good)
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Graham 85 300D ,72 350SL, 98 E320, Outback 2.5
Last edited by Graham; 08-25-2012 at 10:09 AM.
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