87 Corvette Injector Replacement
Thread Starter
Intermediate
Joined: Sep 2009
Posts: 34
Likes: 0
From: Scottsdale AZ
87 Corvette Injector Replacement
Would anyone have a link to or a procedure or diagram? We replaced four injectors and it turned out to be quite a job for us with 3 manifold bolts left over after finishing the job along with one screw that looks like it went to the fuel rail. During reassembly it did not appear that we were missing any places where these bolts and screw needed to go so we have to take everything a part again and make sure everything is put back together properly.
Any help would be greatly appreciated.
Thanks,
Rick
Any help would be greatly appreciated.
Thanks,
Rick
Drifting
Joined: Jun 2013
Posts: 1,590
Likes: 60
From: ft myers FL/Munising MI
Would anyone have a link to or a procedure or diagram? We replaced four injectors and it turned out to be quite a job for us with 3 manifold bolts left over after finishing the job along with one screw that looks like it went to the fuel rail. During reassembly it did not appear that we were missing any places where these bolts and screw needed to go so we have to take everything a part again and make sure everything is put back together properly.
Any help would be greatly appreciated.
Thanks,
Rick
Any help would be greatly appreciated.
Thanks,
Rick
Safety Car
Joined: Apr 2011
Posts: 3,660
Likes: 22
First BUY THE FSM and have a GUIDE !
its only $100 and the books will help solve ALL your future mechanical issues.
ALWAYS pull the plenum, then the runners get loosened, and have new O-rings for the rails.
It takes 30 minutes to pull apart. Place pieces in zip loc bags as they come apart. Label.
Rebuild rails, set inj in manifold with vasoline as lube then set the rail on and SNAP in place.
NEVER EVER just do 1 or 4. Replace injectors in full sets.
Buy the FSM...NOT a $19 chiltons book....a REAL FSM that's got EVERY detail of a corvette within its pages...
That alone would guide you thru the process successfully.
Good luck
its only $100 and the books will help solve ALL your future mechanical issues.
ALWAYS pull the plenum, then the runners get loosened, and have new O-rings for the rails.
It takes 30 minutes to pull apart. Place pieces in zip loc bags as they come apart. Label.
Rebuild rails, set inj in manifold with vasoline as lube then set the rail on and SNAP in place.
NEVER EVER just do 1 or 4. Replace injectors in full sets.
Buy the FSM...NOT a $19 chiltons book....a REAL FSM that's got EVERY detail of a corvette within its pages...
That alone would guide you thru the process successfully.
Good luck
Thread Starter
Intermediate
Joined: Sep 2009
Posts: 34
Likes: 0
From: Scottsdale AZ
Thank you all for the great advice and helpful information. We will be starting on it again later this week. Great head start from your posts! Should have a smooth running engine again.
Cheers!
Rick
Cheers!
Rick
Drifting
Joined: May 2013
Posts: 1,736
Likes: 31
From: Reno Nevada
Pull the throttlebody, plenum, and passenger side runner. Fuelrail can then be removed. Reverse order back together. Some don't remove the runner, and disassemble rails in place, so there's another option.
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
There are three different length plenum and runner Torx bolts.
The 4 long ones go in the center below the runners into the intake manifold.
The 2 medium length bolts go in "backwards" from the intake manifold center area and into the runners, one on each side. There's one on the front passenger side and one on the rear driver's side.
The short bolts go everywhere else.
The 4 long ones go in the center below the runners into the intake manifold.
The 2 medium length bolts go in "backwards" from the intake manifold center area and into the runners, one on each side. There's one on the front passenger side and one on the rear driver's side.
The short bolts go everywhere else.
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Race Director
Joined: Aug 2000
Posts: 11,470
Likes: 764
There are three different length plenum and runner Torx bolts.
The 4 long ones go in the center below the runners into the intake manifold.
The 2 medium length bolts go in "backwards" from the intake manifold center area and into the runners, one on each side. There's one on the front passenger side and one on the rear driver's side.
The short bolts go everywhere else.
The 4 long ones go in the center below the runners into the intake manifold.
The 2 medium length bolts go in "backwards" from the intake manifold center area and into the runners, one on each side. There's one on the front passenger side and one on the rear driver's side.
The short bolts go everywhere else.
- basically, you need to fit the bolt lengths to the runner tubes. there are different flange lengths or thickness cast into the air tubes, but in a nutshell, each bolt should have a tad over 5/8" protruding that threads into the plenum or intake. just play around with the bolt placement - the (bolt) lengths should fall into place. the same holds true (5/8") for the two bolts that install from the inner side of the intake.