88 CRX HF, bad fuel mileage - Page 5 - Fuelly Forums

Android Users - Coming Soon! - Migrating from aCar 4.8 to 5.0

Reply
 
Thread Tools Display Modes
 
Old 06-16-2007, 06:10 PM   #41
Supporting Member
 
88HF's Avatar
 
Join Date: Jun 2007
Posts: 348
Country: United States
new info!

I swapped the fuel injectors from the 90 HF to the 88 HF. Turns out the 88 had different injectors with rubber tips while the 90 appeared to have ceramic tips. Also the 88 was missing the center ceramic spacer on the fuel rail. I can tell a huge difference in the injectors. I think I need to bump (advance) the timing a little cause the idle is ****ty. I'm also gonna run fuel injector cleaner next tank, but on the run around town today (20 miles) my fuel gauge didn't even go down noticeably at all. Which is a difference to before.
injectors from 1990 CRX HF probably with 312K miles.


suspect replacement injectors found in 1988 CRX HF with very low miles.
Attached Thumbnails
Click image for larger version

Name:	90HF injectors.JPG
Views:	126
Size:	85.1 KB
ID:	505   Click image for larger version

Name:	88 injectors.JPG
Views:	132
Size:	86.9 KB
ID:	506  
__________________

__________________


my favorite thread
88HF is offline   Reply With Quote
Old 06-16-2007, 06:12 PM   #42
*shrug*
 
Join Date: Sep 2005
Posts: 6,195
Country: United States
Hope that was the problem.
__________________

SVOboy is offline   Reply With Quote
Old 06-16-2007, 06:17 PM   #43
Supporting Member
 
88HF's Avatar
 
Join Date: Jun 2007
Posts: 348
Country: United States
yeah the replacement gaskets were shorter also, I remember him saying that they had sent him the "wrong injectors" the first time. who knows maybe the first ones were wrong too. He also said it was easy to change them, at least he was right about that.
__________________


my favorite thread
88HF is offline   Reply With Quote
Old 06-16-2007, 06:18 PM   #44
*shrug*
 
Join Date: Sep 2005
Posts: 6,195
Country: United States
Are you using the 90 at all?
SVOboy is offline   Reply With Quote
Old 06-16-2007, 06:33 PM   #45
Supporting Member
 
88HF's Avatar
 
Join Date: Jun 2007
Posts: 348
Country: United States
I tell my family "I bought it for parts" cause they always talk like my cars are ****. Really the injectors are the first thing I've taken from the car. I do plan on swapping the engine so I won't buy new injectors. I don't have it insured but it does drive (needs a battery). I drove it around the block once after I used a bottle of block and head gasket repair cause it has a blown, maybe warped head. It sounded better than the 88 when I cranked it up though. Adding insurance on it right now would just be too much. I want to sell my truck, but my parents/boss/g/f all want me to keep it. I know the a/c in the 90 CRX works awesome cause it was blowing cold right after I started it up, my 88 never blew that cold before it went out.

Anyway, its my parts/project car. I'll take parts off that I plan on replacing when I do the engine swap, but I really want to keep it running just incase. My g/f drives my vehicles too so if the 88 or my truck die, it'd be nice to get the red car running.
__________________


my favorite thread
88HF is offline   Reply With Quote
Old 06-16-2007, 06:37 PM   #46
*shrug*
 
Join Date: Sep 2005
Posts: 6,195
Country: United States
Ah, I see. What use does the truck have for you?
SVOboy is offline   Reply With Quote
Old 06-16-2007, 06:39 PM   #47
Supporting Member
 
88HF's Avatar
 
Join Date: Jun 2007
Posts: 348
Country: United States
my g/f drives it, and I used it to move from Baton Rouge. Its my "reliable" backup transportation.
__________________


my favorite thread
88HF is offline   Reply With Quote
Old 06-16-2007, 06:40 PM   #48
Supporting Member
 
88HF's Avatar
 
Join Date: Jun 2007
Posts: 348
Country: United States
1
__________________


my favorite thread
88HF is offline   Reply With Quote
Old 07-08-2007, 06:20 PM   #49
Supporting Member
 
88HF's Avatar
 
Join Date: Jun 2007
Posts: 348
Country: United States
Today I found out that only the 88 crx hf uses 180cc/min injectors and 89-91 crx hf uses 235cc/min injectors. . . so I think both sets of injectors I've used in my crx have probably been wrong. I read that the 88 uses a longer injection signal for the lower flow injectors. Perhaps if I swap the ECU out of the 90 crx hf then it would send the shorter signal to the injectors that i need so i'm not spraying the extra 24% gas into the engine.
__________________


my favorite thread
88HF is offline   Reply With Quote
Old 07-08-2007, 06:48 PM   #50
Registered Member
 
mrmad's Avatar
 
Join Date: Mar 2007
Posts: 386
Country: United States
I've heard the 88 used different sized injectors, but are you sure of the sizes (180/235)? I thought they were 190cc for the 88 and 240cc for the 90. This is just what I have heard, so not sure here.
__________________

mrmad is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Incorrect Milage Calcuatlion PatM Fuelly Web Support and Community News 4 07-17-2009 08:21 PM
What is this stat? cavale Fuelly Web Support and Community News 1 09-03-2008 08:23 AM
All Licensed Drivers terrapin Fuelly Web Support and Community News 0 08-07-2008 10:49 AM
E-85 and EPA rating zpiloto General Discussion (Off-Topic) 7 09-26-2006 07:04 AM
"active" aero grille slats on 06 civic concept MetroMPG General Fuel Topics 21 01-03-2006 01:02 PM

Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 05:16 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.