New TPI running rich
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Joined: Feb 2001
Posts: 408
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From: Dayton, OH 45431
Car: 91 Camaro Z28
Engine: 5.0 TPI (LB9)
Transmission: 4L60
New TPI running rich
Hey guys, I swapped my 87 Trans Am FROM a carb TO TPI, and it's running rich as hell. I'm wondering if I have 22# injectors instead of 19# (motor is a 305). Is there any way to tell? I'm fouling plugs left and right here and dont know what else to do. I've changed plugs, wires, cap, rotor, everything is firing, I have good spark everywhere. Any ideas guys? Thanks
Brian
Brian
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Joined: Jul 1999
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From: Key West, Florida!
Car: 89RSconvtZZ4TPI
Engine: ZZ4TPI
Transmission: 700R4 TRIPP TRANNY
What about your O2 sensor? Also check your CTS, I had a bad one and it caused me to continually foul plugs. So many settings in the computer are controlled by the CTS, you'd be amazed.
What chip are you running for the TPI?
I'm not sure how to tell the difference between 19 and 22lbers. I think one size is gray, one is black. Not sure which though.
gomen
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Rob P
89RSconvtZZ4TPI Edelbrock Intake
SLP Dual Cold Air Intake 1 5/8" Headers Semi-Siamesed Runners, IROC
suspension, alum shaft. Numerous mods.
92Z28convt5spd (stock)
71Impala convt 402BB
BETTER DRIVING THRU SUPERIOR HORSEPOWER!
What chip are you running for the TPI?
I'm not sure how to tell the difference between 19 and 22lbers. I think one size is gray, one is black. Not sure which though.
gomen
------------------
Rob P
89RSconvtZZ4TPI Edelbrock Intake
SLP Dual Cold Air Intake 1 5/8" Headers Semi-Siamesed Runners, IROC
suspension, alum shaft. Numerous mods.
92Z28convt5spd (stock)
71Impala convt 402BB
BETTER DRIVING THRU SUPERIOR HORSEPOWER!
Supreme Member
iTrader: (1)
Joined: Feb 2000
Posts: 2,361
Likes: 1
From: Savannah, GA
Car: 1997 Jeep Wrangler
Engine: 4.0L
Transmission: 5 speed
Axle/Gears: 8.8 rear, 4.56 gears, 4:1 transfer
Post the part number on the side of the injuctor. It's small and the same color as the plastic so look close and hard. We'll tell you what size injector it is.
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86 Camaro Sport
383 Speed-O-Motive Crate Engine, Raptor 700R4 Tranmission, Trick Flow Twisted Wedge G2's, 58mm Accel TB, 3.73 Auburn Pro, SLP Cold Air Induction and Headers, Hooker Cat-back, Serpentine Belt Setup, Dual IROC Fans, Jamex springs, 16" IROC Rims, 36mm/24mm Sway Bars, Global West Steering Brace. Hotchkis Rear LCA's,Panhard Bar and SFC's.
My Camaro Project
------------------
86 Camaro Sport
383 Speed-O-Motive Crate Engine, Raptor 700R4 Tranmission, Trick Flow Twisted Wedge G2's, 58mm Accel TB, 3.73 Auburn Pro, SLP Cold Air Induction and Headers, Hooker Cat-back, Serpentine Belt Setup, Dual IROC Fans, Jamex springs, 16" IROC Rims, 36mm/24mm Sway Bars, Global West Steering Brace. Hotchkis Rear LCA's,Panhard Bar and SFC's.
My Camaro Project
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From: Doghouse ······································ Car: 1989 Formula 350 Vert Engine: 350 L98 Transmission: 700R4 Axle/Gears: B&W 3.27
Car: 87 Formula T-Top, 87 Formula HT
Engine: 5.1L TPI, 5.0L TPI
Transmission: 700R4, M5
Axle/Gears: Sag 3.73, B&W 3.45
Rob P,
I have both an 87 & 89 Injectors, I know the one set that I have on my car a are the stock 19# ones, I snagged a TPI unit off a guy for 75 Bucks last year from an 89 with a 305.
The 87 Injectors are black, and the 89 Injectors are gray, Color might depend on Manufacturer.
Just a thought.
------------------
87 Formula Yellow/Black
Engine & Transmission
.040 over 5.0 converted to TPI, 9.5:1 Compression, SLP Cam Dur 206/212, Lift 480/487, Cent Line 112, SLP headers, SLP cat-back exhaust, K&N Airfilter, Modified Stock cold air intake, Ported & polished Stock TPI intake, Holley Adjustable Fuel Press regulator, AC Rapidfire Spark Plugs.
Gil Younger (no yo-yo) Shift Kit, Aluminum Driveshaft, 3.73 Posi gear
Suspension & Brakes:
Baer 12" brakes 4 wheels, KYB AGX Adjustable Shocks & struts, Hotchkis strut tower brace, South side machine frame connectors, Custom reinforced control arms and pan hard bar.
Interior:
Custom Leather interior, CUSTOM Yellow Gauge Faces, Kenwood Receiver, Pioneer Speakers, Kicker Substations, Kenwood 10 Disk Changer, Pioneer Amp.
87 Formula TPI (5 Speed) Yellow/Gray STOCK
1967 Buick Riviera 430hp Turns high 14's (Not bad for 4300 lbs)
83 Camaro (Parts)
83 T/A (parts)
http://www.3rdgenformula.com
I have both an 87 & 89 Injectors, I know the one set that I have on my car a are the stock 19# ones, I snagged a TPI unit off a guy for 75 Bucks last year from an 89 with a 305.
The 87 Injectors are black, and the 89 Injectors are gray, Color might depend on Manufacturer.
Just a thought.
------------------
87 Formula Yellow/Black
Engine & Transmission
.040 over 5.0 converted to TPI, 9.5:1 Compression, SLP Cam Dur 206/212, Lift 480/487, Cent Line 112, SLP headers, SLP cat-back exhaust, K&N Airfilter, Modified Stock cold air intake, Ported & polished Stock TPI intake, Holley Adjustable Fuel Press regulator, AC Rapidfire Spark Plugs.
Gil Younger (no yo-yo) Shift Kit, Aluminum Driveshaft, 3.73 Posi gear
Suspension & Brakes:
Baer 12" brakes 4 wheels, KYB AGX Adjustable Shocks & struts, Hotchkis strut tower brace, South side machine frame connectors, Custom reinforced control arms and pan hard bar.
Interior:
Custom Leather interior, CUSTOM Yellow Gauge Faces, Kenwood Receiver, Pioneer Speakers, Kicker Substations, Kenwood 10 Disk Changer, Pioneer Amp.
87 Formula TPI (5 Speed) Yellow/Gray STOCK
1967 Buick Riviera 430hp Turns high 14's (Not bad for 4300 lbs)
83 Camaro (Parts)
83 T/A (parts)
http://www.3rdgenformula.com
Thread Starter
Member
iTrader: (1)
Joined: Feb 2001
Posts: 408
Likes: 0
From: Dayton, OH 45431
Car: 91 Camaro Z28
Engine: 5.0 TPI (LB9)
Transmission: 4L60
Thanks for the help so far guys. As far as I know, these are the stock injectors that came off the TPI unit. The unit itself came from an 86 IROC. The part # on the side is 5235047. If these are the right injectors, any other ideas why it is running so rich? Fuel pressure is set at about 44psi at idle. Thanks guys
Brian
Brian
Supreme Member
iTrader: (1)
Joined: Feb 2000
Posts: 2,361
Likes: 1
From: Savannah, GA
Car: 1997 Jeep Wrangler
Engine: 4.0L
Transmission: 5 speed
Axle/Gears: 8.8 rear, 4.56 gears, 4:1 transfer
<font face="Verdana, Arial" size="2">Originally posted by Slepewesel:
Thanks for the help so far guys. As far as I know, these are the stock injectors that came off the TPI unit. The unit itself came from an 86 IROC. The part # on the side is 5235047. If these are the right injectors, any other ideas why it is running so rich? Fuel pressure is set at about 44psi at idle. Thanks guys
Brian</font>
Thanks for the help so far guys. As far as I know, these are the stock injectors that came off the TPI unit. The unit itself came from an 86 IROC. The part # on the side is 5235047. If these are the right injectors, any other ideas why it is running so rich? Fuel pressure is set at about 44psi at idle. Thanks guys
Brian</font>
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86 Camaro Sport
383 Speed-O-Motive Crate Engine, Raptor 700R4 Tranmission, Trick Flow Twisted Wedge G2's, 58mm Accel TB, 3.73 Auburn Pro, SLP Cold Air Induction and Headers, Hooker Cat-back, Serpentine Belt Setup, Dual IROC Fans, Jamex springs, 16" IROC Rims, 36mm/24mm Sway Bars, Global West Steering Brace. Hotchkis Rear LCA's,Panhard Bar and SFC's.
My Camaro Project
Joined: Dec 2000
Posts: 2,341
Likes: 151
From: Cincinnati,Ohio
Car: 1991 BandittII Firebird
Engine: 5.7 HSR
Transmission: 700R4
Axle/Gears: 3.27 9 bolt
did you reuse the coolant temp sensors?there are two of them at the front of the intake(base)one large one and one smaller one.the larger one is wired directly to the ECM(computer)and it tells the ECM what the coolant temp is,so the ECM can adjust the fuel and timing accordingly.also did you put a 160 t-stat in with a stock computer chip?that'll cause it to run rich.
my two cents
Slepewesel check us out at
http://discussion-board.com/GreaterC...dyAssociation/
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1991 banditt2 #130 of 600
Project 350 TPI Banditt II
http://www.street-dawg-racing.cityslide.com
http://discussion-board.com/GreaterC...dyAssociation/
http://www.cincyspeed.com/
[This message has been edited by 91banditt2 (edited June 26, 2001).]
my two cents
Slepewesel check us out at
http://discussion-board.com/GreaterC...dyAssociation/
------------------
1991 banditt2 #130 of 600
Project 350 TPI Banditt II
http://www.street-dawg-racing.cityslide.com
http://discussion-board.com/GreaterC...dyAssociation/
http://www.cincyspeed.com/
[This message has been edited by 91banditt2 (edited June 26, 2001).]
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