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Re: Engine ran great then died, now floods but has spark! he
Posted: Thu Mar 17, 2011 10:15 pm
by nathanklein
I have corrected the table (newbie mistake) and I will try it again tomorrow. I have checked all the connections to megasquirt and everything checked out. I did change the spark dwell to 1.5 MS as suggested but a writeup on DIYAutoTune about TPI and megasquirt. Also I did have my ignition set to "rising edge" for the capture and I changed it earlier today (as in the write up) and it still had the same problem. Could that have fried something in megasquirt? also I am going to run a direct wire to coil and see maybe its not getting enough current or maybe a bad ground. I tested it earlier but after reading more it maybe a problem in the ignition switched positive. Thanks for all the help so far. I know Im close!!....not really.
Re: Engine ran great then died, now floods but has spark! he
Posted: Fri Mar 18, 2011 4:38 am
by Matt Cramer
By "the same problem" do you mean the timing is still jumping around? If so, please post a new log and MSQ.
If you do not mean jumping timing, please explain what, specifically, the current problem is.
Also, the ignition input capture should be "rising edge" if not using our HEI mod kit setup.
Re: Engine ran great then died, now floods but has spark! he
Posted: Wed Mar 23, 2011 3:18 pm
by nathanklein
Well nothing fixed it. It does idle but still extremly unstable. I messed with everything. Engine however is getting up close to 200F and it never got that close because I have a 160 thermostat. I know its curculating but it seems like its running hot but the Fuel ratio is about 14-15 but thats off the back of the turbo in the down pipe. I unpluged some of my injectors while the engine was running and a few didn't make any difference to the engine RPM. I wonder if on of my injectors is stuck closed and it limits the fuel on all the other cylinders causing them to lean and get the engine hot, compensation for the 14.7 goal afr???? maybe??
Re: Engine ran great then died, now floods but has spark! he
Posted: Thu Mar 24, 2011 4:46 am
by Matt Cramer
I would check your spark plugs first, see if some of them are fouled as this can cause dead cylinders like you describe.
Re: Engine ran great then died, now floods but has spark! he
Posted: Thu Mar 24, 2011 11:07 pm
by nathanklein
ya I'll check it tomorrow but its not running rich and getting super hot. I'm going to pull the fuel pump fuse and run it on starter fluid at the throttle body. if it runs smooth that will tell me on of the injectors or more are stuck closed. they are a brand new set of ford racing 80lb. I think denso makes them. black with blue on them. I'll let you know if anything works. Thanks matt for all your help. hopefully I get this thing running soon.