Corvette Fever Homepage Corvette Fever

How to Change Your Fuel Injector - Got Fuel?



Fuel Baseline Fuel Pressure Reading
Before starting we wanted to have baseline fuel-pressure readings. This is the Schraeder valve to tap for our fuel-pressure gauge.		 Fuel Checking Fuel Pressure
When checking fuel pressure, factory specs call for readings of 40.5-47.0 psi with ignition key on and engine off. Our reading was right in line at 43.0 psi. With key on and engine running, factory specs call for 3-10 psi lower than engine off readings. We found 36 psi, which was right in line at 7 psi below engine off readings. So we knew we had a good starting point.		 Fuel Remove Clamps
Next step was removal of the clamps holding the inlet tube for the Mass Air Flow (MAF) sensor.
Fuel Maf Sensor
Then we lifted out the MAF sensor assembly.		 Fuel Disconnect Wiring
We were careful to disconnect the wiring going to the MAF air flow sensor.		 Fuel Disconnect Throttle Linkage
Next step is disconnecting the throttle linkage, including the cruise control connector as well as the throttle valve (TV) cable that was routed underneath the plenum of our '87.
Fuel Remove Intake Runner Bolt
We also removed the one intake runner bolt that holds the cable stay for the throttle and cruise-control cables.		 Fuel Disconnect Power Brake Booster Vacuum Line
When disconnecting the power brake booster vacuum line from the rear of the plenum it's best to use a 51/48-inch flare nut (line) wrench while holding the mating fitting with a 31/48-inch wrench.		 Fuel Remove Four Bolts
Remove the four bolts that hold the throttle body to the plenum.
Fuel Remove Coolant Hoses
Two coolant hoses must be removed from the throttle body before you can lift it out. We had previously disconnected those hoses during an earlier modification. Their former locations are capped with a blue and a black plastic cap.		 Fuel Lower Runner Bolts
Note the different length of the lower runner bolts so you can be sure to reinstall them in the proper position.		 Fuel Pry Righthand Runner Assmebly Out
With the upper (4) and lower (all 6) plenum bolts removed, you can carefully pry the top of the righthand runner assembly away from the plenum.
Prev  | 1  | 2  | 3  | 4  | 5  | Next
Discuss in Our Forums
Get Adobe Flash player
Get a FREE no-hassle price quote on any new car.

Related Photos

Fuel Engine Fuel Baseline Fuel Pressure Reading Fuel Checking Fuel Pressure
Fuel Parts

Related Articles

 
It's A Cover-Up
We finally get the long-awaited chance to drive the brand-new ZR1 at the Milford Proving Grounds,... more
 
Rack 'Em Up
Specter Werkes/Sports of Troy, Michigan, recently performed its styling-and-performance magic to... more
 
1998 and 2002 Lingenfelter Twin Turbo Corvettes - Number Ones
Steve Coffey's Lingenfelter-built Vettes, both the Twin Turbo 427 and the Wide Body, are the first... more
 
2007 Chevrolet Corvette C6 Hardtop - Signature Beast
John Margiotti calls his '07 Corvettes of Dallas Signature Series Vette "The Beast." Is it because... more
 
Project C5X Baer Brake Rotor Install - Braking News
Project C5X Gets New Baer Brake Rotors And Pads... more
 
1960 Chevrolet Corvette - Splendid '60
This '60 Vette-Rod project helped Herb Turner develop lots of patience.... more
 
Oppose Federal "Cash for Clunkers" Program
Washington lawmakers hope to spur new cars sales by creating a program that gives tax dollars to... more
 
Corvette Fever Desktop Wallpapers
We've selected some of the coolest shots from the pages of Corvette Fever and made them available... more
 
Corvette Fever Desktop Wallpapers
We've selected some of the coolest shots from the pages of Corvette Fever and made them available... more
 
1963 Corvette Engine Compartment Modifications - Split Personality, Part 7
Rich Lagasse covers the engine compartment, air intake, and cooling systems.... more

 

Get Adobe Flash player

Car Research Guide
Source Interlink Media © 2009 Corvette Fever,
Source Interlink Media
All rights reserved. WEB-046