wickiewicked240z Posted October 15, 2008 Share Posted October 15, 2008 Here the deal I have no spark an no fuel going thru the injectors stock 81 l28et 83 turbo dizzy and everything else wiring etc.is from the 240z. MS1 v3 board with relay board wire for direct coil (-) of coil to the S5 on relay (+) of coil on fuel pump relay and fuel pump 12v. I have the stock 83 dizzy black-ground green- to tach on relay also resistor wired to 12v switched black with white stripe- (+) side of coil also which is the fuel return line on the stock fuel rail? I have the returned line connected to the bottom line on the fuel rail that goes to the fuel regulator. Im using mobys numbers for start up I downloaded MS1 Extra 029y4 Also were do I look for audit log files. I have looked on everysingle file on megasquirt in my computer but cant seem to find it. thanks any help would be really appreciated. I have read most of the post on this site but I cant seem to get it running I have pictures and zip file 240zturbo2.zip Quote Link to comment Share on other sites More sharing options...
Matt Cramer Posted October 15, 2008 Share Posted October 15, 2008 Do you see RPM in MegaTune when you crank the engine? Quote Link to comment Share on other sites More sharing options...
wickiewicked240z Posted October 15, 2008 Author Share Posted October 15, 2008 no its red and the pulse witdh is also red and air fuel gauge. Quote Link to comment Share on other sites More sharing options...
Matt Cramer Posted October 16, 2008 Share Posted October 16, 2008 Ok, you're going to need to get an RPM signal first. Can you get RPM on the Stimulator? Quote Link to comment Share on other sites More sharing options...
wickiewicked240z Posted October 17, 2008 Author Share Posted October 17, 2008 I do have RPM using the stimulator and Megatune 2.25p3-MS1/Extra rev 029y4 realtime display. Quote Link to comment Share on other sites More sharing options...
Matt Cramer Posted October 17, 2008 Share Posted October 17, 2008 Take the distributor out and rotate it by hand, with the key on, while checking the voltage at the relay board's Tach terminal. It should go from 0 to 12 volts and back again. Let me know what you find. Also, you might want to pull the fuel injector fuses when doing this test. Quote Link to comment Share on other sites More sharing options...
wickiewicked240z Posted October 18, 2008 Author Share Posted October 18, 2008 ok I just did that an I get 1.35volts thats with the (+) on tach terminal and (-) on ground on relay board with the multimeter. If I spin the dizzy with the hand and pull the plug wires I get spark but I don't think thats enough(weak spark) cause when I bolt up the dizzy again and try to start the engine there is no spark and the realtime RPM display does not show any rpm's I think the injectors are firing because I smell gas in the exhaust and the spark plugs smell like gas but they are not wet. Could it be that I'm using the old stock 240z coil, but new 280zxt plugs and wires Quote Link to comment Share on other sites More sharing options...
wickiewicked240z Posted October 19, 2008 Author Share Posted October 19, 2008 this is so frustrating Quote Link to comment Share on other sites More sharing options...
Matt Cramer Posted October 20, 2008 Share Posted October 20, 2008 You may want to try a smaller resistor for the pull-up in this case. If you *slowly* turn the distributor by hand, what is the most and least voltage you see? Quote Link to comment Share on other sites More sharing options...
wickiewicked240z Posted October 21, 2008 Author Share Posted October 21, 2008 Any one in southern california area, Rialto,CA want to help me, willing to pay $150 If you get the car running correctly..... Quote Link to comment Share on other sites More sharing options...
wickiewicked240z Posted October 24, 2008 Author Share Posted October 24, 2008 have been messing with the dizzy and now I don't have any spark from dizzy. When I try to turn it by hand it does not give any RPM output I think the dizzy went bad. Quote Link to comment Share on other sites More sharing options...
wickiewicked240z Posted October 26, 2008 Author Share Posted October 26, 2008 ok guys the dizzy was bad so I went to the junkyard and got the inner part of a dizzy from some nissan so now the dizzy is working when i spin it by hand but still no spark when I crank the engine. what can be the problem? Quote Link to comment Share on other sites More sharing options...
Matt Cramer Posted October 27, 2008 Share Posted October 27, 2008 Ok, so at this point are you getting a clear RPM signal? Quote Link to comment Share on other sites More sharing options...
wickiewicked240z Posted October 28, 2008 Author Share Posted October 28, 2008 no rpm on megasquirt gauge only when I spin the dizzy by hand but not while crancking. Well today I had the timing done as moby sticky 50-60 degrees then installed the dizzy until led 18 lights up. I will try to start the engine tomorrow see if that works since the battery on the z is going dead. do I have to put those 8ohm resisors for the 280zxt injectors to work? Quote Link to comment Share on other sites More sharing options...
Matt Cramer Posted October 28, 2008 Share Posted October 28, 2008 You can either use resistors or PWM current limiting. And you absolutely must get an RPM signal while cranking first - until you get this, you won't see either ignition or fuel. Quote Link to comment Share on other sites More sharing options...
TrumpetRhapsody Posted October 28, 2008 Share Posted October 28, 2008 Longshot, but where did you tap in for your relay ignition signal? If your relays are opening during cranking due to low voltage (megasquirt turns off while cranking), you're not going to get spark or fuel. This was happening to me with a low battery. Quote Link to comment Share on other sites More sharing options...
wickiewicked240z Posted October 29, 2008 Author Share Posted October 29, 2008 I just went through my ecu to see if the setup im using is installed correctly and everything is OK. my megasquirt relay is connected 12+ to battery. relay ground to battery(-) and 12v switch is connected to the radio 12+ wire. I using another car to jump start the battery that I have on the Z. So I tried to crank the engine still constant spark. I used the timming light and sometimes it lights up but is rare when I stop cranking the engine the rpm gauge turns on lowest rpm is 60something. Quote Link to comment Share on other sites More sharing options...
wickiewicked240z Posted October 29, 2008 Author Share Posted October 29, 2008 could it be that the switched 12v connecte to the radio 12v is cutting off when cranking? Quote Link to comment Share on other sites More sharing options...
TrumpetRhapsody Posted October 29, 2008 Share Posted October 29, 2008 To be honest, I couldn't find a switched 12v sourced that didn't either drop down to 6v, or cut off completely during cranking. I spent about a day and a half with a multimeter too. I ended up just running a switch for megasquirt. Quote Link to comment Share on other sites More sharing options...
wickiewicked240z Posted October 30, 2008 Author Share Posted October 30, 2008 ok the wire from the dizzy 12v and the 12v with the 1k resistor I plugged into the ignition harness so it will get constant 12+ even during cranking unless I turn it off. So now I have spark since the rpm gauge will go over 200 but less than 300. The injectors now are now getting fuel I just need get the timing correct to get this thing running. Quote Link to comment Share on other sites More sharing options...
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