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Author
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Topic: driveability problem.
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Loren
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Member # 925
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posted
 
 
I just put in some 42 lb injectors w/ prom calibrated meter in a car that doesn't have an adjustable fuel pressure regulator. It also does not have an FMU. It idles OK with a vacumm of around 18. When you give it gas with a load on the engine it sputters and floods after about 5 seconds. I've got a aeromotive adj fuel pressure regulator and a FP guage I'm gonna put on. Does this sound like it might solve my problem? thanks
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2012 Raptor Supercrew
1993 Mustang GT
1985 Vanagon GL
Posts: 82 | From: LIVERMORE | Registered: Feb 2002
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Stimson
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Member # 51
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posted
What is the rest of the combo? A custom chip is almost a must for good drivability with most 42 and 50 lbs injector combos.
Posts: 2373 | Registered: Jun 2000
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Loren
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Member # 925
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posted
Novi 2000, stock 5.0 block/heads. It's getting a custom chip/dyno very soon. I just need to be able to get it there
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2012 Raptor Supercrew
1993 Mustang GT
1985 Vanagon GL
Posts: 82 | From: LIVERMORE | Registered: Feb 2002
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Gear Head
JARED
Member # 779
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posted
could it be too much for the combo?
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Support our troops!
Posts: 5685 | From: EASTBAY | Registered: Jan 2002
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99gt-UJSTLST
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Member # 584
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posted
quote:
Originally posted by Loren:
I just put in some 42 lb injectors w/ prom calibrated meter in a car that doesn't have an adjustable fuel pressure regulator. It also does not have an FMU. It idles OK with a vacumm of around 18. When you give it gas with a load on the engine it sputters and floods after about 5 seconds. I've got a aeromotive adj fuel pressure regulator and a FP guage I'm gonna put on. Does this sound like it might solve my problem? thanks
it sounds like you dont have enough fuel pressure for what you got on it
and I would not floor it if I was you couse with out a tune it will blow the head gaskets even worse you can blow you motor
I would add a walborrow 255 inline fuel pump
and add the fuel pressure reugaltor also
I really suggest you get it tuned so that it will run the best and no kaboom
hope this helps
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SOUTH BAY STANGS
MINOR BOLT ON'S
www.southbaystangs.com
Posts: 2558 | From: SAN JOSE CA | Registered: Nov 2001
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Loren
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Member # 925
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posted
Forgot to add its got a AFM powerpipe, 255 lph intank pump, 44psi w/vacuum off. It seems to have trouble when the rpm's go below 1000. I thought I would try rotating the Pro-m. I'm hoping that the chip will fix this! Thanks for the help. It's supposed to be dynoed today.
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2012 Raptor Supercrew
1993 Mustang GT
1985 Vanagon GL
Posts: 82 | From: LIVERMORE | Registered: Feb 2002
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Black88GT
CAFords OG
Member # 394
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posted
loren, how did the dyno go? Did the pos make it there? LOL
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2000 Griggs Racing GT
2012 Kona GT500
Posts: 991 | From: Alameda | Registered: Aug 2001
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Loren
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Member # 925
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posted
Yeah i was just out swinging a tight one. Got a bad spark plug wire or something still. Breaks em loose in the first 3 gears. I think the owner will be happy.
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2012 Raptor Supercrew
1993 Mustang GT
1985 Vanagon GL
Posts: 82 | From: LIVERMORE | Registered: Feb 2002
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Loren
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Member # 925
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posted
Here is the dyno. Not too bad for a comptely stock 144K motor. 
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2012 Raptor Supercrew
1993 Mustang GT
1985 Vanagon GL
Posts: 82 | From: LIVERMORE | Registered: Feb 2002
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Loren
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Member # 925
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posted
ok second try. 
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2012 Raptor Supercrew
1993 Mustang GT
1985 Vanagon GL
Posts: 82 | From: LIVERMORE | Registered: Feb 2002
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Black88GT
CAFords OG
Member # 394
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posted
Wow, What do you think it would run in the 1/4?
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2000 Griggs Racing GT
2012 Kona GT500
Posts: 991 | From: Alameda | Registered: Aug 2001
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2K2GT
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Member # 1542
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posted
i bet it will only do mid 14's at best....lol ![[Cool]](cool.gif)
Posts: 48 | From: Tracy, Ca. | Registered: Jul 2002
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Stimson
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Member # 51
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posted
Not bad. With out an FMU, an inline pump won't aid you much.... not to mention the 255 is plenty for your setup.
So did the chip fix your drivability problems? When you say stock 114K miles, are you talking 100% stock exhaust, 192^ thermostat, ect?
Posts: 2373 | Registered: Jun 2000
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Black88GT
CAFords OG
Member # 394
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posted
the motor has 144,000 on the clock. I think the car has headers, Bassani x, and flows. The motor is stock.
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2000 Griggs Racing GT
2012 Kona GT500
Posts: 991 | From: Alameda | Registered: Aug 2001
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Black88GT
CAFords OG
Member # 394
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posted
quote:
Originally posted by 2K2GT:
i bet it will only do mid 14's at best....lol
I was hoping for 14.8, at least your optimistic LOL
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2000 Griggs Racing GT
2012 Kona GT500
Posts: 991 | From: Alameda | Registered: Aug 2001
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StoplightWarrior
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Member # 211
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posted
So wait, is Loren selling the car??
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2000 GT
couple bolt ons
Check out the website: peep it
Posts: 2952 | From: Bay Area, CA | Registered: Mar 2001
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Black88GT
CAFords OG
Member # 394
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posted
quote:
Originally posted by StoplightWarrior:
So wait, is Loren selling the car??
Where did that come from?
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2000 Griggs Racing GT
2012 Kona GT500
Posts: 991 | From: Alameda | Registered: Aug 2001
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