injectors don't fire!
Thread Starter
Junior Member
Joined: Jan 2000
Posts: 40
Likes: 0
From: Bethpage, NY, USA
injectors don't fire!
whenever i crank the motor, there is no fuel goin to the tbi unit. I check to see if the pump is pumping, i think it is, its making that whining noise, could it be a bad fuel filter? Anything else? Any advice would be appreciated. Thanks.
Supreme Member
Joined: Jul 2000
Posts: 1,341
Likes: 0
From: Where the chicks absolutely LOVE the V-8 rumble!
Car: 92 RS - Fully Restored w/Custom Int
Engine: LO3 with some mods
Transmission: T-5
Axle/Gears: 3.42 Richmond
Check your fuel pressure at the TBI unit. If its good it rules out the pump and filter.
Then check for voltage at the injectors.
------------------
92 Camaro RS, LO3, 5-spd, T-tops
Performance:
K&N Open Air Filter, Edelbrock performer TBI intake, Fastchip Prom, Timing +4 degrees, Centerforce clutch, Xact 8mm wires, SLP 1 3/4" Headers (coated), Flowmaster Catback Exhaust, Z28 Grille w/aftmkt fog lamps, MacEwen white-face guages
Electronics:
Alpine 8030 Alarm System, Valentine One Radar Detector (How did I ever drive without one?), Pioneer DEH 7450 Head Unit w/6-pack CD changer, Pioneer DEQ 7600 Sound Processor, 2 Kenwood KAC-846 Amps powering 2 12" Pro Red subs, 2 Pioneer 6x9 and 2 MTX 4x6 speakers.
NEXT UP: TBI mods, 3.42 gears w/Torsen posi
Then check for voltage at the injectors.
------------------
92 Camaro RS, LO3, 5-spd, T-tops
Performance:
K&N Open Air Filter, Edelbrock performer TBI intake, Fastchip Prom, Timing +4 degrees, Centerforce clutch, Xact 8mm wires, SLP 1 3/4" Headers (coated), Flowmaster Catback Exhaust, Z28 Grille w/aftmkt fog lamps, MacEwen white-face guages
Electronics:
Alpine 8030 Alarm System, Valentine One Radar Detector (How did I ever drive without one?), Pioneer DEH 7450 Head Unit w/6-pack CD changer, Pioneer DEQ 7600 Sound Processor, 2 Kenwood KAC-846 Amps powering 2 12" Pro Red subs, 2 Pioneer 6x9 and 2 MTX 4x6 speakers.
NEXT UP: TBI mods, 3.42 gears w/Torsen posi
Supreme Member
Joined: Sep 1999
Posts: 2,175
Likes: 0
From: Ewing, NJ
change the fuel filter first. and check to see if the injectors are making a little clicking noise when the key is turned. if there is silence then the injectors aren't firing and it is a wiring issue, if they are making noise then it is a fuel issue.
lata
tim
------------------
91 Camaro RS-LO3,Auto.
14.209@95.46mph
Best 60' 1.917
Check Out The East Coast F-Body Nationals Home Page
www.geocities.com/njspeeder
My MAFB.ORG Home Page
www.mycar.net/mafb/registry/detail.cfm?id=299
DSI Racing Home Page
www.geocities.com/foff667
lata
tim
------------------
91 Camaro RS-LO3,Auto.
14.209@95.46mph
Best 60' 1.917
Check Out The East Coast F-Body Nationals Home Page
www.geocities.com/njspeeder
My MAFB.ORG Home Page
www.mycar.net/mafb/registry/detail.cfm?id=299
DSI Racing Home Page
www.geocities.com/foff667
Moderator
Joined: Jul 1999
Posts: 4,384
Likes: 2
From: Tulsa, OK
<font face="Verdana, Arial" size="2">Originally posted by Pukka:
Check your fuel pressure at the TBI unit. If its good it rules out the pump and filter.
Then check for voltage at the injectors.
</font>
Check your fuel pressure at the TBI unit. If its good it rules out the pump and filter.
Then check for voltage at the injectors.
</font>
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Supreme Member
Joined: Sep 1999
Posts: 2,175
Likes: 0
From: Ewing, NJ
<font face="Verdana, Arial" size="2">Originally posted by formula88:
NJ, should i crank it or just put the key in the on position? </font>
NJ, should i crank it or just put the key in the on position? </font>
lata
tim
------------------
91 Camaro RS-LO3,Auto.
14.209@95.46mph
Best 60' 1.917
Check Out The East Coast F-Body Nationals Home Page
www.geocities.com/njspeeder
My MAFB.ORG Home Page
www.mycar.net/mafb/registry/detail.cfm?id=299
DSI Racing Home Page
www.geocities.com/foff667
Junior Member
Joined: Jul 2001
Posts: 36
Likes: 0
From: OHIO
I had that happen once, and as silly as it sounds, the wiring connectors on the IGNITION COIL had slid off. That will actually stop your injectors from firing when cranking. Something to check.
------------------
Corey Turner - Toledo, OH
91 9C1 - "Project Potent Rodent"
http://www.geocities.com/kidkid911
-350ci / Ported Vortec's - 10:1 Compression
-Crane '509 lift hyd. roller cam / 1.5" Roller Rockers
-Ported Holley 670cfm TBI on a Edelbrock Multipoint EFI System / Paxton AFPR
-Heddman Full-Length Headers piped to Dynomax 2.5" True Duals / DM Turbo Mufflers
-K&N Dual Air Inlets running to Ram Air II Hood
-MSD 6A Ignition Controller / MSD Blaster 3 Coil / Accel wires-cap-rotor
-Ed Wright Fastchip in a 7747 ECM
-Flex-a-lite 210 Electric Fans - 160 Thermostat
-700R4 w/ a B&M Shift Kit
-3.43 Posi-Rear
-Ram Air II Hood, Custom spoiler
------------------
Corey Turner - Toledo, OH
91 9C1 - "Project Potent Rodent"
http://www.geocities.com/kidkid911
-350ci / Ported Vortec's - 10:1 Compression
-Crane '509 lift hyd. roller cam / 1.5" Roller Rockers
-Ported Holley 670cfm TBI on a Edelbrock Multipoint EFI System / Paxton AFPR
-Heddman Full-Length Headers piped to Dynomax 2.5" True Duals / DM Turbo Mufflers
-K&N Dual Air Inlets running to Ram Air II Hood
-MSD 6A Ignition Controller / MSD Blaster 3 Coil / Accel wires-cap-rotor
-Ed Wright Fastchip in a 7747 ECM
-Flex-a-lite 210 Electric Fans - 160 Thermostat
-700R4 w/ a B&M Shift Kit
-3.43 Posi-Rear
-Ram Air II Hood, Custom spoiler
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