Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E36 (1991 - 1999)

E36 (1991 - 1999)
The E36 chassis 3-Series BMW was a huge hit among driving enthusiasts from the first moment the car hit the pavement. The E36 won numerous awards over the years it was produced and is still a favorite of many BMW enthusiasts to this day! -- View the E36 Wiki

Reply
 
Thread Tools Display Modes
  #101  
Old 09-12-2012, 01:58 PM
Kdoherty's Avatar
Kdoherty Kdoherty is offline
bimmerfest Supporting Member
Location: The cradle of Liberty
 
Join Date: Aug 2010
Posts: 5,545
Mein Auto: A redhead E90
oof, this is quite the frustrating issue. Maybe someone else can shed some light. all i know is that if pinching the return worked that means fuel backed up and had enough to feed the injectors
__________________


Quote:
Originally Posted by cj.surr View Post
Drop the clutch, proceed and ain't care.
  • '06 325xi 6MT
Reply With Quote
  #102  
Old 09-12-2012, 02:04 PM
cj.surr's Avatar
cj.surr cj.surr is online now
some kid
Location: Ithaca, NY
 
Join Date: Oct 2010
Posts: 10,458
Mein Auto: whiny 318
All you need to solve this problem is an extra pair of vice grips...
__________________
-CJ

Reply With Quote
  #103  
Old 09-12-2012, 02:25 PM
FenderBender's Avatar
FenderBender FenderBender is online now
Needs Boost
Location: Hicktown, PA
 
Join Date: Apr 2008
Posts: 11,194
Mein Auto: Red Sled
Went back to the garage update coming.


Cj, don't think it didn't cross my mind...lol.
__________________
Turbo Build Here


Reply With Quote
  #104  
Old 09-12-2012, 02:35 PM
FenderBender's Avatar
FenderBender FenderBender is online now
Needs Boost
Location: Hicktown, PA
 
Join Date: Apr 2008
Posts: 11,194
Mein Auto: Red Sled
__________________
Turbo Build Here


Reply With Quote
  #105  
Old 09-12-2012, 02:37 PM
Kdoherty's Avatar
Kdoherty Kdoherty is offline
bimmerfest Supporting Member
Location: The cradle of Liberty
 
Join Date: Aug 2010
Posts: 5,545
Mein Auto: A redhead E90
what the crap. lol. coolant leak..... tehehe. hopefully it holds out on the test drive. if not. pluck the engine and swap in a giant hamster ball
__________________


Quote:
Originally Posted by cj.surr View Post
Drop the clutch, proceed and ain't care.
  • '06 325xi 6MT
Reply With Quote
  #106  
Old 09-12-2012, 02:41 PM
FenderBender's Avatar
FenderBender FenderBender is online now
Needs Boost
Location: Hicktown, PA
 
Join Date: Apr 2008
Posts: 11,194
Mein Auto: Red Sled
Idk what's up, but it idles just fine! Granted it doesn't have an air filter so it's all not quite together and perfect yet.


Probably won't drive it tonight, need that filter and need to bolt some things back up, oil change too.
__________________
Turbo Build Here


Reply With Quote
  #107  
Old 09-12-2012, 02:50 PM
FenderBender's Avatar
FenderBender FenderBender is online now
Needs Boost
Location: Hicktown, PA
 
Join Date: Apr 2008
Posts: 11,194
Mein Auto: Red Sled
I think possibly the FPR was "stuck" all I did was unplug and re plug the vacuum line from it.
__________________
Turbo Build Here


Reply With Quote
  #108  
Old 09-12-2012, 06:56 PM
drivinfaster's Avatar
drivinfaster drivinfaster is offline
bimmerfest Supporting Member
Location: in the sticks you piney
 
Join Date: Nov 2007
Posts: 10,707
Mein Auto: rescued bmw's
my head hurts from reading all of that...

matt,

there s/b 2 pumps on this thing. 1 in the tank, 1 on the fuel line. the in tank unit is a sending (feeder) pump, while the inline pump is the one that builds the higher pressure.

iirc there are mods to convert to a single pump, but that is neither here nor there. at least not now...

take your fuel pressure readings. if you are not running without the return line being pinched off, then i say fuel delivery is an issue. your pump may be running, but it may not be building enough pressure to allow the vehicle to run properly.

the fpr uses vacuum pressure to reduce the fuel pressure, and when accelerating hard, the vac drops and fuel pressure increases because the diaphram inside closes.

on average, the fuel pressure should increase about 10 psi when the throttle is snapped.

this is how you can check for fpr operation.

so i suggest checking fuel pressure and fuel pump operation. the in tank pump.




df
__________________
Reply With Quote
  #109  
Old 09-13-2012, 04:25 PM
Joe__Sterling's Avatar
Joe__Sterling Joe__Sterling is offline
Fast Cars Suck!
Location: Albany, NY
 
Join Date: May 2009
Posts: 7,606
Send a message via AIM to Joe__Sterling
Mein Auto: '13 FIAT 500 '68 BMW 1602
my e30 had dual pumps aswell, i initally though that was one of its issues Sadly it wasnt for me. good luck matt!
__________________

*The I Drove to Both East and West Coast Bimmerfest Club* Member #1
@Joe__Sterling on twitter & instagram (two underscores)
Reply With Quote
  #110  
Old 09-13-2012, 05:04 PM
FenderBender's Avatar
FenderBender FenderBender is online now
Needs Boost
Location: Hicktown, PA
 
Join Date: Apr 2008
Posts: 11,194
Mein Auto: Red Sled
What was your issue Joe?


Df, how do I check the in take pump? It has to be working because a ton of fuel is flowing out, correct? I can also hear the in line pump working.

Scratch the whole "I fixed it" part. Still not quite right, going to get a fuel filter air filter and oil filter tomorrow. Install, test fuel pressure, and report back.
__________________
Turbo Build Here


Reply With Quote
  #111  
Old 09-13-2012, 05:18 PM
drivinfaster's Avatar
drivinfaster drivinfaster is offline
bimmerfest Supporting Member
Location: in the sticks you piney
 
Join Date: Nov 2007
Posts: 10,707
Mein Auto: rescued bmw's
if both pumps arent pumping, then the fuel pressure will be low and slow. like lola...

as for how to make sure the supply pump in the tank is working, unplug the inline pump and read the pressure.

not sure if there is a spec for that pump or not, though. never owned an e30.


df
__________________
Reply With Quote
  #112  
Old 09-13-2012, 05:21 PM
TheFinanceGuy's Avatar
TheFinanceGuy TheFinanceGuy is offline
still learnin'
Location: Boston Metro West (BMW)
 
Join Date: Aug 2011
Posts: 4,950
Mein Auto: 1998 328i / 99 540iA
This thread makes me Want to never own an E30...
__________________
Patrick ///04 330i ZHP///BMWCCA#465139



99 540i TiAg
98 328i hellrot (sold)
96 318iC black (sold)
Reply With Quote
  #113  
Old 09-13-2012, 05:24 PM
drivinfaster's Avatar
drivinfaster drivinfaster is offline
bimmerfest Supporting Member
Location: in the sticks you piney
 
Join Date: Nov 2007
Posts: 10,707
Mein Auto: rescued bmw's
never understood the reasoning behind 2 pumps...but i believe there is a retrofit to a single pump.



df
__________________
Reply With Quote
  #114  
Old 09-13-2012, 06:04 PM
FenderBender's Avatar
FenderBender FenderBender is online now
Needs Boost
Location: Hicktown, PA
 
Join Date: Apr 2008
Posts: 11,194
Mein Auto: Red Sled
Will do! Thanks Df.

Sent from my ADR6400L using Bimmer App
__________________
Turbo Build Here


Reply With Quote
  #115  
Old 09-14-2012, 05:33 PM
FenderBender's Avatar
FenderBender FenderBender is online now
Needs Boost
Location: Hicktown, PA
 
Join Date: Apr 2008
Posts: 11,194
Mein Auto: Red Sled
Did the air filter and fuel filter, really no change. I forgot the fuel pressure gauge, DOH! Stupid me.


FWIW, I could not blow through the old fuel filter, however I could the new one.
__________________
Turbo Build Here


Reply With Quote
  #116  
Old 09-14-2012, 05:36 PM
Kdoherty's Avatar
Kdoherty Kdoherty is offline
bimmerfest Supporting Member
Location: The cradle of Liberty
 
Join Date: Aug 2010
Posts: 5,545
Mein Auto: A redhead E90
Quote:
Originally Posted by FenderBender View Post
Did the air filter and fuel filter, really no change. I forgot the fuel pressure gauge, DOH! Stupid me.


FWIW, I could not blow through the old fuel filter, however I could the new one.
hmmmmmmm. I bet you can't wait to get it running so you can sell it
__________________


Quote:
Originally Posted by cj.surr View Post
Drop the clutch, proceed and ain't care.
  • '06 325xi 6MT
Reply With Quote
  #117  
Old 09-14-2012, 05:40 PM
FenderBender's Avatar
FenderBender FenderBender is online now
Needs Boost
Location: Hicktown, PA
 
Join Date: Apr 2008
Posts: 11,194
Mein Auto: Red Sled
Lol MAYBE!
__________________
Turbo Build Here


Reply With Quote
  #118  
Old 09-18-2012, 03:08 PM
FenderBender's Avatar
FenderBender FenderBender is online now
Needs Boost
Location: Hicktown, PA
 
Join Date: Apr 2008
Posts: 11,194
Mein Auto: Red Sled
Alright, real fuel pressure updates, sorry for the videos, some are quite long.









To sum, fuel pressure engine off in spec, maybe a hair under.


Fuel pressure engine on, 30 or so psi, spec is 43psi or so.
__________________
Turbo Build Here


Reply With Quote
  #119  
Old 09-18-2012, 05:45 PM
FenderBender's Avatar
FenderBender FenderBender is online now
Needs Boost
Location: Hicktown, PA
 
Join Date: Apr 2008
Posts: 11,194
Mein Auto: Red Sled
Cricket cricket......

Sent from my ADR6400L using Bimmer App
__________________
Turbo Build Here


Reply With Quote
  #120  
Old 09-18-2012, 06:32 PM
drivinfaster's Avatar
drivinfaster drivinfaster is offline
bimmerfest Supporting Member
Location: in the sticks you piney
 
Join Date: Nov 2007
Posts: 10,707
Mein Auto: rescued bmw's
that's only about 75% of spec, so that could give you issues.

what does the reading do when you remove the vacuum to the fpr?? if it goes up, by how much??

if it doesn;t go up, then i would look at the price of pumps, and possibly the retrofit idea.

replacing 2 pumps to me is such a silly idea. but that's me.

i tend to like simple and clean.





df
__________________
Reply With Quote
  #121  
Old 09-18-2012, 08:07 PM
FenderBender's Avatar
FenderBender FenderBender is online now
Needs Boost
Location: Hicktown, PA
 
Join Date: Apr 2008
Posts: 11,194
Mein Auto: Red Sled
I think in the one video I removed the vacuum line and the pressure did go up. What does that mean?

Sent from my ADR6400L using Bimmer App
__________________
Turbo Build Here


Reply With Quote
  #122  
Old 09-18-2012, 08:53 PM
hornhospital's Avatar
hornhospital hornhospital is offline
D'oh, You kids!
Location: In the Grumpy Chair
 
Join Date: Jan 2008
Posts: 14,163
Mein Auto: 1995 318is / 1993 325is
Means your fpr is working. It reads the removed vacuum line as a drop in vacuum which means open throttle. At open throttle you want more pressure to feed the injectors since the fuel demand goes up.

Sent from my MB860 using Bimmer App
__________________
Quotes to live by:
guessing gets expensive...drivinfaster
nothing is more expensive than a cheap BMW...c4harpe13

Ken Kanne, Silverhill, AL, E36 Forum Mod/Craigslist addict/Hoarder of all sorts of stuff
BMW-CCA #441426
1995 318is "Bebe"; 1993 325is "Elvira" 1985 635CSi "Katja" 1984 633CSi "Sylvia"
HAVE I HAD MY MEDS YET?

Reply With Quote
  #123  
Old 09-19-2012, 04:19 AM
FenderBender's Avatar
FenderBender FenderBender is online now
Needs Boost
Location: Hicktown, PA
 
Join Date: Apr 2008
Posts: 11,194
Mein Auto: Red Sled
I guess I will test each fuel pump tonight and go from there!

Sent from my ADR6400L using Bimmer App
__________________
Turbo Build Here


Reply With Quote
  #124  
Old 09-19-2012, 08:03 AM
Eight Thirty Eight Thirty is offline
nothing.
Location: Rochester, Ny
 
Join Date: Jan 2009
Posts: 13,506
Mein Auto: A dream
Ill be honest now. lately i have been wanting to buy a e30 and slam it and put some wide wheels on it.


would be my little truck.
__________________
Reply With Quote
  #125  
Old 09-19-2012, 09:12 AM
FenderBender's Avatar
FenderBender FenderBender is online now
Needs Boost
Location: Hicktown, PA
 
Join Date: Apr 2008
Posts: 11,194
Mein Auto: Red Sled
Lol you hate them!

Sent from my ADR6400L using Bimmer App
__________________
Turbo Build Here


Reply With Quote
Reply

Bookmarks

Tags
:3


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E36 (1991 - 1999)
Today's Posts Search
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 On



Forum Jump


All times are GMT -7. The time now is 04:49 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
© 2001-2011 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms