PLEASE HELP NO FUEL,NO SPARK, NO TACH SIGNAl - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


General Miata Chat A place to talk about anything Miata

Reply
 
 
 
LinkBack Thread Tools
Old 11-15-2013, 12:24 AM   #1
Newb
Thread Starter
 
Join Date: Sep 2013
Posts: 41
Total Cats: 0
Exclamation PLEASE HELP NO FUEL,NO SPARK, NO TACH SIGNAl

Ok guys lemme start off by saying I SEARCHED MY *** OFF for weeks since i purchased this car..... I bought my 1992 Miata not running 1.6l boosted etc.

since i bought the car the wiring was a nightmare so i replaced the harness.
The megasquirt was also a nightmare so i bought a megasquirt PNP.
I Also bought A CAS, A ignitor, and stock ignition setup with ngk wires...

SO to get up to speed.... Harness installed, new megasquirt pnp installed... ait sensors hooked up to AFM connector, All grounds checked, etc.....

we hooked up to tuner studio and tried our first start with all new setup.... Its getting no tach signal, no fuel, and no spark..... Hmmm leads me to recheck everything and i did.... So then im thinking let me go borrow parts off a buddys running car.... SO i pulled the Cas, ignitor, and ignition coils, and wires, and ecu... from a buddy running and driving car... installed and still nothing....... ****

TIMING is 100% dead on.
Battery is 100% charged (starting with a jump pack as well to be sure of charge)
All fuses are 100% good.
Im at a loss here guys.... I have spent thousands on this car and i paid over 6k for the car not running.... I know its somthing stupid..... Please help me figure this out..

Also im going to clean the ignition switch and try that because i saw it pop up while searching through old threads... although i highly doubt it would cause no spark and fuel.... THANKS IN ADVANCE!!!
slammedkouki is offline   Reply With Quote
Old 11-15-2013, 12:33 AM   #2
Senior Member
iTrader: (5)
 
Join Date: May 2011
Location: London,OH
Posts: 1,125
Total Cats: 13
Default

Tuner studio is showing 0rpm while cranking, no ignition timing, and 0 pulse width. Manually testing from the megasquirt can get 1 of his original coils to fire. We didnt pull the injectors to test them manually. I didn't think about taking a datalog while cranking.
redturbomiata is offline   Reply With Quote
Old 11-15-2013, 01:43 AM   #3
Senior Member
iTrader: (5)
 
Join Date: May 2011
Location: London,OH
Posts: 1,125
Total Cats: 13
Default

we are leaning towards a firmware issue, just like this thread.
https://www.miataturbo.net/megasquir...-diypnp-69379/
redturbomiata is offline   Reply With Quote
Old 11-15-2013, 09:02 AM   #4
I'm a terrible person
iTrader: (19)
 
FRT_Fun's Avatar
 
Join Date: Apr 2009
Location: Arizona
Posts: 7,293
Total Cats: 180
Default

Sounds like a wiring issue to me.

Confirm the firmware though as that is an easy check.

If that doesn't work I'd whip out the old DMM and start checking continuity from various connectors to the ECU connector. Also, for good measure I'd double check grounds. It's easy to forget one when swapping a harness, and there are a lot of them. Also double check all connectors are seated properly.

If the car won't run with a stock ECU I doubt the MS is the problem.
FRT_Fun is offline   Reply With Quote
Old 11-16-2013, 03:01 AM   #5
Newb
Thread Starter
 
Join Date: Sep 2013
Posts: 41
Total Cats: 0
Default

Ok cool we did the firmware update and now we indeed do Have spark and tach signal..... BUT NO FUEL.... :(
slammedkouki is offline   Reply With Quote
Old 11-16-2013, 03:03 AM   #6
I'm a terrible person
iTrader: (19)
 
FRT_Fun's Avatar
 
Join Date: Apr 2009
Location: Arizona
Posts: 7,293
Total Cats: 180
Default

do you hear the Fuel pump prime?
FRT_Fun is offline   Reply With Quote
Old 11-16-2013, 08:51 AM   #7
Senior Member
iTrader: (5)
 
Join Date: May 2011
Location: London,OH
Posts: 1,125
Total Cats: 13
Default

Yes
redturbomiata is offline   Reply With Quote
Old 11-16-2013, 11:42 AM   #8
Newb
 
Join Date: Feb 2013
Posts: 31
Total Cats: 0
Default

No fuel pressure? If the pump is priming then it should have something. Put a pressure gauge in line on the feed to get a number. Or are you just getting no injector signal ?
WeebleWobble is offline   Reply With Quote
Old 11-16-2013, 01:21 PM   #9
Senior Member
iTrader: (5)
 
Join Date: May 2011
Location: London,OH
Posts: 1,125
Total Cats: 13
Default

No injector signal
redturbomiata is offline   Reply With Quote
Old 11-16-2013, 01:28 PM   #10
Newb
 
Join Date: Feb 2013
Posts: 31
Total Cats: 0
Default

Stock harness right?. ok.

What kind of injectors are they? They should be a color on the top and there should be a part number on them.

You may have the wrong kind of injectors.

Also check your grounds!
WeebleWobble is offline   Reply With Quote
Old 11-16-2013, 03:06 PM   #11
Newb
Thread Starter
 
Join Date: Sep 2013
Posts: 41
Total Cats: 0
Default

The injectors are some cheapo ebay ****.... there 440cc.... But I know there working because if I just jump Fuel pump relay and install the stock ecu... Car fires up first crank.... everytime....
slammedkouki is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 57 07-19-2017 05:11 PM
My solution for Oiltemp and Oilpressure input into Megasuirt (MS3) Zaphod MEGAsquirt 41 01-24-2016 01:25 PM
Time to start learning and play with tuning The Gleas MEGAsquirt 3 10-01-2015 10:30 AM
Walbro 255lph Fuel Pump $50 lsc224 Miata parts for sale/trade 2 10-01-2015 10:17 AM
Are my coils failing? viriiguy General Miata Chat 5 09-28-2015 08:39 PM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 05:23 PM.