Bad injectors? - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


DIY Turbo Discussion greddy on a 1.8? homebrew kit?

Reply
 
 
 
LinkBack Thread Tools
Old 06-28-2007, 07:16 PM   #1
Senior Member
Thread Starter
iTrader: (3)
 
Join Date: Apr 2006
Location: Northern Michigan
Posts: 898
Total Cats: 0
Default Bad injectors?

I finally got a day to myself, at least a couple of hours without moving stuff or medical tests, so I swapped in these injectors:

http://cgi.ebay.com/ebaymotors/ws/eB...m=290114059918

Install went great, no leaks, but the car barely ran and my LC1 showed extremely lean. What could I have done wrong?

I reinstalled my old injectors and the car is back to normal. I just want to run lower fuel pressure for my 8psi.
rotaryjunky is offline   Reply With Quote
Old 06-28-2007, 07:33 PM   #2
Senior Member
iTrader: (2)
 
Join Date: Aug 2005
Location: Granbury, TX
Posts: 567
Total Cats: 1
Default

What kind of engine management are you running?

Quote:
Originally Posted by rotaryjunky View Post
I finally got a day to myself, at least a couple of hours without moving stuff or medical tests, so I swapped in these injectors:

http://cgi.ebay.com/ebaymotors/ws/eB...m=290114059918

Install went great, no leaks, but the car barely ran and my LC1 showed extremely lean. What could I have done wrong?

I reinstalled my old injectors and the car is back to normal. I just want to run lower fuel pressure for my 8psi.
greenday3437 is offline   Reply With Quote
Old 06-28-2007, 08:18 PM   #3
Senior Member
Thread Starter
iTrader: (3)
 
Join Date: Apr 2006
Location: Northern Michigan
Posts: 898
Total Cats: 0
Default

Old school bandaids, BEGI FMU and 190 fuel pump.
rotaryjunky is offline   Reply With Quote
Old 06-28-2007, 08:52 PM   #4
Senior Member
Thread Starter
iTrader: (3)
 
Join Date: Apr 2006
Location: Northern Michigan
Posts: 898
Total Cats: 0
Default

I've got the FMU on max and I am still only getting 11.75 afr's at 8psi. I may need to calibrate my LC1, not sure.
rotaryjunky is offline   Reply With Quote
Old 06-28-2007, 09:50 PM   #5
:(
iTrader: (7)
 
Join Date: Jul 2006
Location: nowhere
Posts: 8,281
Total Cats: 2
Default

11.75 is frigin rich as hell try 12.3 or so. you are way to rich at 11.75 to make any real power.
magnamx-5 is offline   Reply With Quote
Old 06-28-2007, 10:27 PM   #6
Senior Member
Thread Starter
iTrader: (3)
 
Join Date: Apr 2006
Location: Northern Michigan
Posts: 898
Total Cats: 0
Default

I was just out running the car and noticed two things.

1st, with the fmu all the way tightened, it holds the fuel pressure (when pumped up with a hand pump) and doesn't go down. If I loosen it a few turns (to run a little leaner anyways), it bleeds off the pressure and I keep having to pump it to keep it up (hmmm..). So I am assuming I should not be running it turned all the way in.

2nd, I noticed a knocking sound down low, sounds like a train hitting the connections in the tracks. I am really not happy about this. Rod knock? The car only has 31K. How long do I have before catastrophic failure? I just really wanted to take this car on a few trips this summer.
(Edit: Just ran it again and its not so bad, its intermittent and might be valve related, we'll see. I don't care, I will push it around the track. Too much to do to the civic to track it, 217k mile honda crap.)

Last edited by rotaryjunky; 06-28-2007 at 11:22 PM. Reason: I'm skitso paranoid.
rotaryjunky 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 59 12-15-2017 09:00 PM
Changing from 460cc to flow force 610cc in diypnp 90 Turbo MEGAsquirt 19 10-19-2015 04:23 PM
Going back to stock. Need some 1.6 parts. Trent WTB 2 10-01-2015 01:15 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


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 02:27 AM.