![SEARCH](http://www.mustangworks.com/images/search.png)
![The Mustang Works](http://www.mustangworks.com/images/mw_footer_logo.gif)
© Copyright 1995 thru 2008 - The Mustang Works™. All Rights Reserved.
MustangWorks.com is designed and hosted by Aero3 Media.
MustangWorks.com is designed and hosted by Aero3 Media.
![]() |
#1 |
Registered Member
Join Date: Feb 2004
Location: alpharetta,GA
Posts: 19
|
![]() So far I have put in a new 180* thremostat , autolite #24 spark plugs, msd cap and rotor, o2 sencor, air filter . It runs alot better, though it still feels rich. It will rip in fist gear then it dies out in second?? I was thinking I might have a leaky injector, sometimes I can smell fuel. And would a adj fuel regultor help, and where should I set it to on a s/c 9lb 5.0?? Thanks
__________________
93 white lx, tko, 3.55, powerdyne 9lb, pulleys, mac headers,bbk x-pipe,flomaster,24lb injectors,77 mass air,75 t-body |
![]() |
![]() |
![]() |
#2 |
Registered Member
Join Date: Apr 2001
Location: Staging lane
Posts: 4,337
|
![]() Not the cheapest but the easiest way to fix it would be to get a chip burned.
Or you could go to a dyno and tweek your fuel pressure. It is just hard to tune a supercharged car without the aid of diagnostic equipment.
__________________
92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer |
![]() |
![]() |
![]() |
#3 |
Registered Member
Join Date: Aug 2001
Location: Huntington NY
Posts: 573
|
![]() Have you pulled the plugs to confirm it is running rich? Post a pic if possible. You can decrease the fp after you confirm it is rich, then check the plugs to see the difference.
__________________
-1993 Mustang, 900rwhp 03-04 cobra based 4v swap, full Griggs setup, project underway -1994 Ranger w/ 427cid windsor (daily beater) check it out! |
![]() |
![]() |
![]() |
#4 |
Registered Member
Join Date: Feb 2004
Location: alpharetta,GA
Posts: 19
|
![]() I will pull one of the plugs today. I do not know if i can post a pic but i will try.
__________________
93 white lx, tko, 3.55, powerdyne 9lb, pulleys, mac headers,bbk x-pipe,flomaster,24lb injectors,77 mass air,75 t-body |
![]() |
![]() |
![]() |
#5 |
Registered Member
Join Date: Mar 2004
Location: rising fawn, ga
Posts: 8
|
![]() are you still running the fmu that came with the supercharger kit if so you are definitely rich its made to make 19 lb injectors work with the charger you probably need to ditch it if u are using it and put on a dyno and have a chip burned by the way a dry shot hits really hard on a rich running car
__________________
302 roush 200 heads ported with comp beehive springs ford z-303 cam performer rpm intake with custom 750 carb 4.10 gear 5 speed with c-4 with trans brake in the works |
![]() |
![]() |
![]() |
#6 |
Registered Member
Join Date: Feb 2004
Location: alpharetta,GA
Posts: 19
|
![]() Yes, I am going to ditch the fmu that came with the powerdyne, Yesterday i bought a adjustable fuel regulator and gauge. What psi should I have the regulator set to with 24lb injectors??
__________________
93 white lx, tko, 3.55, powerdyne 9lb, pulleys, mac headers,bbk x-pipe,flomaster,24lb injectors,77 mass air,75 t-body |
![]() |
![]() |
![]() |
#7 |
Registered Member
Join Date: Feb 2004
Location: alpharetta,GA
Posts: 19
|
![]() Alright, I put every thing on. I first set it to 40 psi, Drove it still feels rich but I knowticed at the top end(above 4,000 rpm) it feels like its not getting anough fuel or like the clutch slips sometimes, but it is a new clutch so i do not thick thats it. Then I put it at 35psi, felt about the same, then at 45psi and it got worce?? and is more fuel presure= richer or leaner?? Could my fuel pump be bad, if so how do i check? And could a leaking injector do this??? thanks
__________________
93 white lx, tko, 3.55, powerdyne 9lb, pulleys, mac headers,bbk x-pipe,flomaster,24lb injectors,77 mass air,75 t-body |
![]() |
![]() |
![]() |
#8 |
Registered Member
Join Date: Aug 2001
Location: Huntington NY
Posts: 573
|
![]() When you said you "ditched" the FMU, does that mean you reclaibrated it for the 24lbs? I really hope that doesn't mean you just are not using one now.
__________________
-1993 Mustang, 900rwhp 03-04 cobra based 4v swap, full Griggs setup, project underway -1994 Ranger w/ 427cid windsor (daily beater) check it out! |
![]() |
![]() |
![]() |
#9 |
Registered Member
Join Date: Feb 2004
Location: alpharetta,GA
Posts: 19
|
![]() when I talked to a mechanic at dugan racing he said to get rid of it, or just plug it off. What does it do and where do you think I should have my fuel presure set at??
__________________
93 white lx, tko, 3.55, powerdyne 9lb, pulleys, mac headers,bbk x-pipe,flomaster,24lb injectors,77 mass air,75 t-body |
![]() |
![]() |
![]() |
#10 |
Registered Member
Join Date: Aug 2001
Location: Huntington NY
Posts: 573
|
![]() The FMU steps up the fuel pressure in a specific ratio. It supplies the extra fuel you will need under boost. You can also get a stand alone fuel system that will do that for you, without the FMU. That feeling above 4000 rpm is the engine not getting the fuel it needs under boost which almost always results in SEVERE ENGINE DAMAGE. It is like running nitrous wihtout any fuel inrichment. Your computer doesn't know your engine has a supercharger on it. If your supercharger put out more boost you would have burned pistons and posible catasropic engine failure. You may already have damaged your engine depending on how many runs under boost you have made.
PUT THE FMU BACK ON!! Get the 24lb calibration dics for it and make sure your MAF is calibrated for the 24lb injectors. Then your problems will go away.
__________________
-1993 Mustang, 900rwhp 03-04 cobra based 4v swap, full Griggs setup, project underway -1994 Ranger w/ 427cid windsor (daily beater) check it out! |
![]() |
![]() |
![]() |
#11 |
Registered Member
Join Date: Feb 2004
Location: alpharetta,GA
Posts: 19
|
![]() Ok. thanks. do you know where i can get a 24lb disk? the other thing is that the car has run fine before. its just starting to do this. Could it be a leaky injector??
__________________
93 white lx, tko, 3.55, powerdyne 9lb, pulleys, mac headers,bbk x-pipe,flomaster,24lb injectors,77 mass air,75 t-body |
![]() |
![]() |
![]() |
#12 |
Registered Member
Join Date: Aug 2001
Location: Huntington NY
Posts: 573
|
![]() I'd call up Vortech eng. They should be able ot help you.
__________________
-1993 Mustang, 900rwhp 03-04 cobra based 4v swap, full Griggs setup, project underway -1994 Ranger w/ 427cid windsor (daily beater) check it out! |
![]() |
![]() |
![]() |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
i think i am running rich | ugp134 | Windsor Power | 2 | 03-20-2004 04:05 PM |
escort running rich | BilLster | Blue Oval Lounge | 4 | 09-17-2003 07:47 PM |
running rich? | reignman | Windsor Power | 2 | 11-13-2002 10:19 PM |
Running rich bad for O2's? | HiFlow5 0 | Windsor Power | 1 | 06-03-2002 07:18 AM |
running rich | Phantom5oh | Windsor Power | 4 | 03-21-2002 09:21 PM |