Final tune, Need help |
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Final tune, Need help |
Morph914 |
Mar 23 2022, 12:34 PM
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#1
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Member Group: Members Posts: 435 Joined: 22-August 16 From: St Augustine, FL Member No.: 20,326 Region Association: South East States |
Ok , so I have the engine running but it needs tuning. A little background, rebuilt stock 2.0 with D Jet, running a 123 dizzy. It fires right up and idles a little rough at first then smooths out. It revs fairly well and sounds good. The problem starts under load, it starts to stutter a bit.
I have not messed with the adjustment screw on the ECU or tried adjusting the throttle position sensor, or been able to check my fuel pressure. I’m hoping to rally any troops in the north Florida area to help me get these final details ironed out. Thanks in advance, John |
Morph914 |
Apr 27 2022, 11:08 AM
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#2
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Member Group: Members Posts: 435 Joined: 22-August 16 From: St Augustine, FL Member No.: 20,326 Region Association: South East States |
Ok, so after locating the proper mps (037), and verifying that the fuel pressure is good (28-30)
I tried to start it but it would not fire. After adjusting the timing, It started up and then I fiddled with the timing a little more just by sound and feel. It is running much better now (IMG:style_emoticons/default/piratenanner.gif) Now the idle is up too high, around 1500 or so. I turned the idle screw in at the throttle body, but it seemed like it was in all the way with my fingers, so unable to get the idle down where it should be. Any thoughts on fixing the high idle? |
ClayPerrine |
Apr 27 2022, 11:12 AM
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#3
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Life's been good to me so far..... Group: Admin Posts: 15,502 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille |
Ok, so after locating the proper mps (037), and verifying that the fuel pressure is good (28-30) I tried to start it but it would not fire. After adjusting the timing, It started up and then I fiddled with the timing a little more just by sound and feel. It is running much better now (IMG:style_emoticons/default/piratenanner.gif) Now the idle is up too high, around 1500 or so. I turned the idle screw in at the throttle body, but it seemed like it was in all the way with my fingers, so unable to get the idle down where it should be. Any thoughts on fixing the high idle? Check your vacuum hoses. D-Jet will idle high when there is a vacuum leak. |
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