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Old 06-14-2014, 06:18 PM   #1
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Unhappy Need help! No fuel on 1&3

So car was running great. Water pump went bad and engine got warm, then after replacing the water pump and getting it running again, the head gasket blew. So I resurfaced the head, and replaced the head gasket. First start up since HG it wasn't running right. I determined it wasn't getting fuel on cylinder #1. After chasing wires and banging my head again the wall I decided to reduce the gap on the crank sensor to the trigger wheel. Car ran great, on all four cylinders even! After about 5 minutes is stopped getting fuel on cylinder #1 again. I put a used crank sensor in place of the one I assumed was going bad, now it isn't getting fuel in cylinder #1 or #3. I tried two other sensors and still nothing. Leak down and compression are good, as is the ignition. I don't know where in TS to see the signal from the crank sensor, and I am out of ideas to fix this. Please discuss.
Thanks in advance!
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Old 06-14-2014, 06:31 PM   #2
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This is how you read the ignition loggers:
MS2/Extra - Tooth and trigger loggers

Examples of logs:
Megasquirt - Tooth Log Examples
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Old 06-14-2014, 06:45 PM   #3
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Ok. So now I can see what it is doing, but I really don't know what I am looking at.....
How do I take a screen shot so I can post it?
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Old 06-14-2014, 06:59 PM   #4
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I think I figured that out. I will try to post screen shots later. Going to let battery charge a little while I try to be productive while I still have good daylight. Thanks Ben.
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Old 06-16-2014, 11:02 PM   #5
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I am having computer problems.....can someone please look at this and tell me what it shows? I can't seem to open it.....
Attached Files
File Type: csv 2014-06-16_15.15.21.csv (140.5 KB, 40 views)
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Old 06-17-2014, 09:48 AM   #6
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looks like you made a change in your tune. that log is only showing one trigger (i opened it in excel) so I'm assuming it's not set to 99-05 miata but single trigger.
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Old 06-17-2014, 11:37 AM   #7
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No, I just checked the tune and it looks right. Thanks for the advice though! I guess I need to get a scope and figure out how to use it so I can test the crank sensor. I have tried four used sensors, they can't all be bad! I will also give the trigger wheel a good look but don't see how that could have changed......

Very open to ideas!
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Old 06-17-2014, 01:06 PM   #8
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Did you check tune or did you check the trigger settings? He's talking about your trigger settings.
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Old 06-17-2014, 01:13 PM   #9
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There is a really good chance I don't know the difference. Please tell me where to find the trigger settings. I looked and it said it was 99 miata triggering I thought but I may not be looking at the right place?
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Old 06-19-2014, 05:25 PM   #10
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And the dumbass of the day award goes to.....

AMELLROTTS!!!!!

The wire was not fully seated into the connector on the ECU. Apparently it was out JUST enough that the 1&3 injectors were not getting grounded. Unbelievable that this car has sat for two weeks waiting for me to work on it thinking it was going to be a big issue. Grrrr!

Thanks for your input Vlad and Ben!
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