Thank you all for the useful information. Winter is coming and I will have more time to start addressing the problems that I have had. I believe that my misfires are ignition related. My tach started dropping recently, coordinating with a loss of power that is noticeable at highway speed or any decent amount of acceleration. I will replace the points with a Pertronix set up this winter and hopefully find out why I'm loosing spark as well. The tach drops every 2 seconds or so and has a major cut out about once every 5 minutes that causes a decent loss of power very briefly.
72 D-Jet tuning
Hello everybody. Thank you for the great information that has been posted. I have spent a lot of time reading through all of the posts, especially the encyclopedia germanica sticky. I want to start off by asking what browser is best for this website. I usually spend 5-10 minutes trying to load the page I want 
I am working on tuning my 72 350sl right now and I am getting a lot of misfires. Timing is set 5 degrees BTDC (about 27 total advance @ 3k rpm), but it jumps with misfire. Dwell is at about 33 and all injectors seem to fire just fine (I listened to them). She seems to misfire a lot before reaching operating temp, but not as much afterwards. Plugs are a little white, I set them at 0.032" Ecu is set to all the way rich, she misfires more if set leaner. I did check the air temp sensor and water temp sensor, but map.... there isn't a test for it? Right now I plan on cleaning the injectors and then replacing the fuel filter. Fuel pressure is also good, 31 psi. Can I soak the injectors in carb cleaner, or will that destroy the electronic or rubber parts? I haven't seen much information on the best way to clean them yet. I am also going to replace the soft top and paint the hood. I don't like the way the soft top bows up right now (on the back), is there a thread that deals with this? What is the best manufacturer for the soft top?
I am working on tuning my 72 350sl right now and I am getting a lot of misfires. Timing is set 5 degrees BTDC (about 27 total advance @ 3k rpm), but it jumps with misfire. Dwell is at about 33 and all injectors seem to fire just fine (I listened to them). She seems to misfire a lot before reaching operating temp, but not as much afterwards. Plugs are a little white, I set them at 0.032" Ecu is set to all the way rich, she misfires more if set leaner. I did check the air temp sensor and water temp sensor, but map.... there isn't a test for it? Right now I plan on cleaning the injectors and then replacing the fuel filter. Fuel pressure is also good, 31 psi. Can I soak the injectors in carb cleaner, or will that destroy the electronic or rubber parts? I haven't seen much information on the best way to clean them yet. I am also going to replace the soft top and paint the hood. I don't like the way the soft top bows up right now (on the back), is there a thread that deals with this? What is the best manufacturer for the soft top?1 - 3 of 10 Posts
MBGraham. Thank you very much for your response as well as your extensive sharing on this forum. I decided to replace the points with the Petronix kit and the coil as well, following your posted material. The car is running almost perfectly now
I will still clean injectors and check spray patterns and do some minor tuning, but I am very happy with the new ignition What would be a good spark plug gap for the higher coil output of the flamethrower? I will add a air/fuel sensor soon as well and adjust the car for a little better mpg if possible. I'm guessing that fuel pressure is the only way to do this? Now it is time to start addressing the cosmetic issues. I have a new soft top and I'm going to strip the hood and hard top for paint soon. That is going to take some time and money. Lol But... I get to drive plenty in the mean time.1 - 3 of 10 Posts
