Electric Fuel Pressure guage - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Prefabbed Turbo Kits A place to discuss prefabricated turbo kits on the market
Sponsored by:
Sponsored by:

Reply
 
 
 
LinkBack Thread Tools
Old 09-08-2006, 01:49 PM   #1
Junior Member
Thread Starter
 
Join Date: Feb 2005
Posts: 79
Total Cats: 0
Default Electric Fuel Pressure guage

I just bought a Autometer electric FP guage (#4363) and wanted to check in with you guys to see where the best place to mount the sender? Before the FPR (fuel in), or after the FPR (fuel out)? I'm thinking after, to see what kinda' pressure I'm getting to the injectors?
TIA
Mike
mracer is offline   Reply With Quote
Old 09-08-2006, 01:55 PM   #2
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,818
Total Cats: 1,780
Default

Before the fuel rail. The feed side that is.

So:

Hard line -> Gauge -> Fuel Rail -> OEM FPR -> (APFR) -> Hard line

Last edited by Braineack; 09-12-2006 at 10:43 PM.
Braineack is offline   Reply With Quote
Old 09-12-2006, 10:12 PM   #3
Junior Member
Thread Starter
 
Join Date: Feb 2005
Posts: 79
Total Cats: 0
Default

Well, I'm guessing I screwed up? Just got it all hooked up and the guage is reading 1-2 PSI....Doh! Did I hook it up on the wrong side, or do you think the guage/sender is pooched?
TIA
Mike
mracer is offline   Reply With Quote
Old 09-12-2006, 10:43 PM   #4
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,818
Total Cats: 1,780
Default

probably the return side. Didn't you follow my diagram?
Braineack is offline   Reply With Quote
Old 09-12-2006, 11:06 PM   #5
Junior Member
Thread Starter
 
Join Date: Feb 2005
Posts: 79
Total Cats: 0
Default

Quote:
Originally Posted by braineack View Post
probably the return side. Didn't you follow my diagram?
I thought I did? LOL!
Tomorrow, I'll stop and buy a length of new FI hose..........sigh....
Mike
mracer is offline   Reply With Quote
Old 09-13-2006, 07:27 PM   #6
Junior Member
 
Join Date: Oct 2004
Location: Windsor, Canada
Posts: 191
Total Cats: -2
Default

You have to ground the sensor.....if you don't it won't work properly. Since your using rubber fuel line after the hardline, the sensor is unable to ground itself, so you have to run a neg. wire to a chassis ground. Most sensors, are designed to screw into the block, so this is not needed.
MiataNuTca is offline   Reply With Quote
Old 09-13-2006, 08:11 PM   #7
Junior Member
 
Join Date: Oct 2004
Location: Spring Hill, FL
Posts: 90
Total Cats: 0
Default

I don't think so. The Autometer gauge and sendor has two terminals on the sendor with instructions on how to wire it in. If using a $20 oil pressure gauge to measure fuel pressure, then it was grounded to the block and extra wire is needed to use for a fuel pressure sendor.

Second point is possible to be spliced into the wrong line, but a little unbelieveable that there is 2 PSI of fuel pressure inside the fuel tank.

Still easy enough to check by pinching the return line closed in prime mode.
Pop VII is offline   Reply With Quote
Old 09-13-2006, 09:20 PM   #8
Junior Member
Thread Starter
 
Join Date: Feb 2005
Posts: 79
Total Cats: 0
Default

If I had followed Braineak's directions a bit more closely, I would have got it the first time. The sender has 3 wires going to the guage, and the connector that clips into the back of the guage has a + & - wire too. Straightened the lines out, and I'm good to go....... Now all I have to do is get ambitious and hook up my Emanage and my 305's and then pay Miatanutca a visit for a clone tune!
Thanks for the help
Mike
mracer 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
OTS Bilstein to motorsports ASN conversion stoves Suspension, Brakes, Drivetrain 5 04-21-2016 04:00 PM
Walbro 255lph Fuel Pump $50 lsc224 Miata parts for sale/trade 2 10-01-2015 10:17 AM
Low oil pressure after 1.8 swap and new turbo setup JesseTheNoob DIY Turbo Discussion 15 09-30-2015 03:44 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 01:20 PM.