D-Jetronic Fuel Economy . . .

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[@alaingillot4718]

Back then , we used to adjust the MAp sensor , Just make sure the engine temp is right / ignition timing , cam timing , now with an exhaust analyser at 2500 rpm , or you could set the injectors MS time opening .Most of those older cars where running too rich .The only issue with leaning the car , you ended up with a difficult HOT start , due to the coolant heating up , and causing an over lean condition . So 3.5 % was about right . Not great for gas mileage .

[@josehumbertocontrerascarri594]

Good video-- Congratulations

[@LilyoftheValeyrising]

Wow! This is great information! I have a '80 450sl. I realize I have a newer version, but still very interesting info!

[@mercedesclassicswithpierre1753]

thank you!

[@LilyoftheValeyrising]

Ha! Now I have my own D-Jet! LOL

[@therdtongtiyabhorn9277]

Hi Pierre, i have 1972 SL350 with D Jet. My car is running perfectly at high speed. Nevertheless, when it not properly warmed up, it shows hiccup while changing from high to lower gear. It has auto transmission so i guess it jerks from 2 nd to 3rd gear. After engine get warmed the jerk get easier and not much vibration at rear axel. I am in puzzled
if this is from insufficient gas or leak vacuum line.
Please kindly advice
Therdtong from Thailand

[@alaingillot4718]

Some used car dealers would buy a 4.5 , and swap the rear end to a 280sl , great for the 280 sl , but terrible for the 4.5 .

[@patbojalil4454]

Good stuff Pierre as always!

[@ryszardwiniarski784]

Hi Pierre. I bought W108 280SEL 4.5. I have a tragic fuel economy. It turned out that the previous owner changed the differential to one with the ratio of 4.08 - thans a lot! ;)
Greetings from Poland

[@amir9693]

Hi Pierre!
I have a 95 W124 Mercedes E200 with the 2.0l M111 engine. The car misfires on cylinder 2 & 3 and I think it is the ignition module. I have 0 knowledge on how to use a multimeter and to exactly diagnose if it is the ignition module to be 100% sure. How do I solve this problem?

[@mercedesclassicswithpierre1753]

if your car has coil pack ignition, you likely need a new coil pack.

[@amir9693]

It uses 2 ignition coils.

[@matthewbrown5677]

have a VW type 3 that been in a desert for 30 years so would love some help with D. Jet. cheers matt UK.

[@mercedesclassicswithpierre1753]

pcbunn.cithep.caltech.edu/jjb/Porsche/D-Jetronic.pdf

[@mercedesclassicswithpierre1753]

good luck!