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

Flooding with Fuel!

 
Old 08-21-2007, 11:11 PM
  #1  
Junior Member
Thread Starter
iTrader: (6)
 
Join Date: Apr 2006
Posts: 257
Total Cats: 0
Default Flooding with Fuel!

I posted a while back about and issue that I was having and after just installing a new motor I'm still having the same issue. That's not why I did the swap but rules out a bunch of things I though it might be.

Anyways, I get a horrible hesitation general 1st, 2nd gear 2.5k and lower right before the transition into boost. Only happen when driving normal to slow; if I step on it I'll never see it. Sounds like the engine is almost flooding itself with fuel get weird popping noises threw the exhaust and if I push the pedal down further or all the way no response what so ever untill it gradually lifts the rpms above 2-2.5k and clears right up. I have an o2 clamp and see no difference in the issue I'm having weither its connect or not. The only things I can think of that weren't changed with the swap are the Flapper Air Meter (sorry don't remeber the techinical name), FMU & Vaccum Lines, & Fuel Pump and Filter that might cause this issue.

Anyone know what it might be?

*thought it may have been the timing before but now I'm running 14 degrees BTC and pulling to 8 degrees BTC with a bipes so I can't get any better so gotta be something else.
danscreations is offline  
Old 08-21-2007, 11:46 PM
  #2  
I'm Miserable!
iTrader: (1)
 
Join Date: Jun 2007
Location: Lakeland, FL
Posts: 140
Total Cats: 0
Default

Where you located?? I have an AFM from a 90 parts car.
Tremiata is offline  
Old 08-22-2007, 08:36 AM
  #3  
Boost Czar
iTrader: (62)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 76,398
Total Cats: 2,296
Default

If there is no change with or without the o2 clamp, i'd think the o2 clamp is no setup right....and if that is the case then the hesitation you feel is acutally the car going lean....

verify your FMU was installed correctly and throw a voltmeter on the o2 clamp output.
Braineack is offline  
Old 08-22-2007, 01:32 PM
  #4  
Junior Member
Thread Starter
iTrader: (6)
 
Join Date: Apr 2006
Posts: 257
Total Cats: 0
Default

Originally Posted by Tremiata View Post
Where you located?? I have an AFM from a 90 parts car.
Daytona Beach dunno if I feel like driving and hour 1/2 to lakeland...you selling it?

Originally Posted by Braineack View Post
If there is no change with or without the o2 clamp, i'd think the o2 clamp is no setup right....and if that is the case then the hesitation you feel is acutally the car going lean....

verify your FMU was installed correctly and throw a voltmeter on the o2 clamp output.
The clamp will change the transition onto boost; notice it more so on 2nd, 3rd, 4th, and 5th gear transitions though due to my current issue. Ill check the FMU setup again and check the voltage...I remember resetting it to lean the clamp out some from the full rich it comes. Thought that may have been the issue way back when. Didn't fix it but made the issue and the car feel better.
danscreations is offline  
Old 08-22-2007, 02:10 PM
  #5  
I'm Miserable!
iTrader: (1)
 
Join Date: Jun 2007
Location: Lakeland, FL
Posts: 140
Total Cats: 0
Default

sent pm.

I have a 90 parts car if need something shippable or if local to central Florida.
Tremiata is offline  
Old 08-22-2007, 09:07 PM
  #6  
:(
iTrader: (7)
 
Join Date: Jul 2006
Location: nowhere
Posts: 8,254
Total Cats: 2
Default

i think lean tip in.
magnamx-5 is offline  
Old 08-22-2007, 10:44 PM
  #7  
Junior Member
Thread Starter
iTrader: (6)
 
Join Date: Apr 2006
Posts: 257
Total Cats: 0
Default

read something about a fuel pump going bad doing this....i'm going to check everything on friday along with installing a new fuel pump (replaced a year ago) and a walbro or evo 8 fuel pump (for now). see if that solves the problem if not that then all go for the AFM.
danscreations is offline  
Old 08-28-2007, 12:00 AM
  #8  
Junior Member
Thread Starter
iTrader: (6)
 
Join Date: Apr 2006
Posts: 257
Total Cats: 0
Default

Update: Got the walbro put in it in and overall the car feels better but first few hundred feet same deal. The issue is still here. DAMN! When installing the pump I looked at my ALLDATA account for some information and saw there is a fuel pump relay. This relay has two coils one for startup and another for when the car is runing. I followed the instructions for checking it which it should read 12volts. And it did however I might by a new one anyways to be 100% more sure. I also read about how the AFM and the fuel pump work together. Seems as if the ecu has no control over the pump other than the AFM telling the pump. I should go read it again but not sure if the signal from the AFM is ON or OFF or VARIABLE?!?!? Not sure what direction to take. Anyone have any thoughts.
danscreations is offline  
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Full_Tilt_Boogie
Build Threads
67
03-16-2019 08:07 PM
lsc224
Miata parts for sale/trade
2
10-01-2015 09:17 AM
MiataGarage
Engine Performance
5
09-29-2015 11:04 PM
Voltwings
Cars for sale/trade
0
09-27-2015 06:40 PM


Thread Tools
Search this Thread
Quick Reply: Flooding with Fuel!


Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.