92Miata

iTrader: (3)

the tps when unplugged on mine goes all crazy and is unpredictable, but the car will run with out it.

First log it looks like the priming pulse happens and all, but then your MAP never drops below 94 it should pull all the way down to 30.

Also your battery is weak your voltage when cranking is dropping way to low.

I lowered your priming pulse on this one, changed your cranking rpms and i think thats it, try it with either a booster box on the battery or a jump and see what happens.

Edit after you make sure MS sees vacuum from the motor otherwise it will inject way to much fuel.

240_to_miata

iTrader: (2)

you do a compression test yet?

astroboy

iTrader: (18)

The first log I did I hooked up the tps to go into flood clear. The second one is w/ tps unplugged and in mapdot. Sorry I didn't explain

Also just checked to see what compression have on #1 cylinder: 90lbs Unless I f'd up assembly bad #1 tells me enough.

240_to_miata

iTrader: (2)

OK so you better hope and pray cam timing. Either that or you are screwed. Sorry man :(

92Miata

iTrader: (3)

im gonna go with cam timing since your not pulling a vacuum either.

also in the first log it shows 0 TP and is injecting fuel but the whole time you are cranking there is no vacuum being created.

and in the second one your RPM is crazy high, im thinking because of your cranking voltage ?

astroboy

iTrader: (18)

Just did them all and am going to do it again because it seems the compression tester isn't getting the best seal against the bottom of the plug well. They went like this:

1: 90, 135
2:135
3:135
4: 125, 150

Going to do them all a second time, and there was fuel on each spark plug...

92Miata

iTrader: (3)

make sure you have the CAS unplugged and the throttlebody held open.

and you will get lower numbers on a cold motor then warm, and if its a fresh rebuild i wouldnt expect great numbers till its broken in some.

astroboy

iTrader: (18)

Yeah, seeing how it isn't broken in I am not worried about it. All but #4 cylinder got 140 (#4 was 150). CAS, cops, and tps are all unplugged. I am trying to come up with what could be making a vac leak...not sure yet though.

92Miata

iTrader: (3)

Well in your logs you map reading isnt changing at all. But with that lower priming pulse and better battery voltage you should atleast get a sputter

astroboy

iTrader: (18)

Then I'll try that ****. Loading and hoping now. I'm also going to log and upload afterwords.

astroboy

iTrader: (18)

Lots of the same thing. Here's the log:

Also it put me from ms1 to ms2.25p3 Should I be concerned?

92Miata

iTrader: (3)

it should match your firmware, which one are you running so i can make sure i compared to the correct one.

Are you getting nothing at all no sputters or anything ?

92Miata

iTrader: (3)

And im not sure why but your rpms in the logs when i load them are 24400rpm.

astroboy

iTrader: (18)

Not so much as a sputter. We were running it ms1e hires 10g

Weird because they show in mt as ~220-250

92Miata

iTrader: (3)

I'm running out of ideas. Will have to look at it some more after work tomorrow.

astroboy

iTrader: (18)

I am going to try checking the injectors, looking for a vac leak, and peeing on it. Thanks for the help guys!

astroboy

iTrader: (18)

To bring tonight to an end:

Injectors are all 12.3Ω +/-5%
Checked one of the cops to make sure I didn't kill them. It's resistance readings indicate it is good.
No vacuum leaks that I could find.
Disconnected and plugged the brake booster port
Pulled the line that MS uses for vac signal and could feel suction
Peeing on everything felt good but didn't fix it.

Maaaaybe the duration on my cops should be adjusted? Also still no resolution on the fuel pressure gauge showing a big goose egg. Going to tear the fuel system apart for real this time.

shlammed

iTrader: (8)

Do you have the fuel lines hooked up properly? i have done this before and sounds exactly like the symptoms your describing.... cranking and no fire.


Try the starter fluid **** and see if it works.

Braineack

iTrader: (62)

where are you measuring fuel pressure? you need to put the gauge on the feed before the rail.

jch13

Don't unplug the TPS during cranking, that's what'll get you into flood-clear mode and shut off your fuel. Unless I'm missing something...

You could put plugs in the coils and visually verify they're firing in the right order with a nice bright spark.