Fuel Injector Spacer??
Thread Starter
Instructor
Joined: Feb 2011
Posts: 142
Likes: 24
From: Houston Texas
Fuel Injector Spacer??
Had the injectors out earlier and discovered this. At first glance they seem like a spacer of some sort. Made of a hard plastic material and very brittle. All 8 have cracks through them but this one was totally missing a side. I can't seem to locate a replacement kit of these things. They are NOT the rubber O-rings. The rubber O-rings live behind these hard plastic things...
[IMG]
[/IMG]
[IMG]
[/IMG]
Burning Brakes
Joined: Dec 2003
Posts: 1,243
Likes: 5
From: Loveland CO
can you post a side pic of the injector/spacer? measure them and try to find Billet ones to replace them. sounds like you have aftermarket injectors that require spacers to keep the length the same as stock.
S
S
Last edited by RedZMonte; Apr 3, 2014 at 07:35 PM.
Melting Slicks
Joined: Dec 2004
Posts: 3,120
Likes: 119
St. Jude Donor '10
it is not a spacer. That ring sits on the bottom of the fuel injector to keep the o ring in the correct position and keep it from slippinng/vibrating down. Some other injectors have caps on them instead of that hard plastic ring.
Talk to Jon at Fuel Injector Connection. He can get you taken care of.
Talk to Jon at Fuel Injector Connection. He can get you taken care of.
Thread Starter
Instructor
Joined: Feb 2011
Posts: 142
Likes: 24
From: Houston Texas
Here is a side profile shot. It came out a little blurry but its good enough to see the hard plastic ring with the rubber o ring behind it. I will also look up fuel injector connection
[IMG]
[/IMG]
[IMG]
[/IMG]
Burning Brakes
Joined: Oct 2013
Posts: 859
Likes: 1
They are called pintle caps. See the link below (pintle caps are hard to see but are on right side of picture), you may as well replace the o rings and injector filter too while you got em out. Ask this seller for pricing for a set of 8, it'll be much cheaper, I think I got mine for my ford red tops for about $30 total for all 8
http://bit.ly/1gTLB21
http://bit.ly/1gTLB21
Melting Slicks
Joined: Dec 2004
Posts: 3,120
Likes: 119
St. Jude Donor '10
If you want to do it right, have the entire injector cleaned and flowmatched. That is the best way. There is more than 1 filter basket in quite a few different injectors and just changing the basket will not clean out any deposits on the inside or in the pintle of the injector either.
Thread Starter
Instructor
Joined: Feb 2011
Posts: 142
Likes: 24
From: Houston Texas
They are called pintle caps. See the link below (pintle caps are hard to see but are on right side of picture), you may as well replace the o rings and injector filter too while you got em out. Ask this seller for pricing for a set of 8, it'll be much cheaper, I think I got mine for my ford red tops for about $30 total for all 8
http://bit.ly/1gTLB21
http://bit.ly/1gTLB21
I've never dealt with opening up and servicing injectors before. Is it a relatively simple job requiring normal hand tools? I also wonder if these parts are shot would it be simpler to just buy 8 new injectors and plug them in?
I had this LS6 engine put in my regular 01' back in November '13. Apparently these injectors have some miles on them otherwise they wouldn't look like hell. Damn ethanol gas.....
I also wonder if these things contribute to the deceleration / coasting engine stumble I have. Seems like I have a vacuum leak but after going through the whole engine bay several times and finding no leak I'm beginning to think I may have the culprit here.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Thread Starter
Instructor
Joined: Feb 2011
Posts: 142
Likes: 24
From: Houston Texas
The engine has a small cam in it. I'm 99% sure the current injectors are the stock factory examples. Not sure what the pressure is on them (thinking its 28). So if I could get some good stockers or some equivalents that'd be great. I also have the LS6 intake in use as well.
Burning Brakes
Joined: Oct 2013
Posts: 859
Likes: 1
CoSPEED is right, it can be a gamble if you don't have them cleaned properly. As for the stumbling, you'd be amazed at what a vac leak at the injector seal can do. Not saying this is your problem, but if your injector o rings are worn it very well could be causing the issue. Now, if you do decide to just install the caps yourself without cleaning, you won't need to open up the injector. To get the old pintle caps off you cut them with a razor blade and pry them off with a flat head. Slide new o ring on and press on new pintle cap, you'll know when it's in place as it kind of "snaps." Careful not to break it though. To get the filter out of the top, screw a small screw into the filter but don't go too deep, grab the head of the screw with some pliers and the filter should come out with a little force. To install the new filter, press it in, then lightly hit the top of the filter with a hammer until it is all the way into the injector.
Melting Slicks
Joined: Dec 2004
Posts: 3,120
Likes: 119
St. Jude Donor '10
Those arent a real cap. They are just a plastic ring. If you arent careful installing the new caps you can break them also. We can get the new caps and o rings in a kit, but I have even been surprised at the amount of good a new set of injectors can do. Esp from factory tolerances to flowmatched.
Thread Starter
Instructor
Joined: Feb 2011
Posts: 142
Likes: 24
From: Houston Texas
CoSPEED is right, it can be a gamble if you don't have them cleaned properly. As for the stumbling, you'd be amazed at what a vac leak at the injector seal can do. Not saying this is your problem, but if your injector o rings are worn it very well could be causing the issue. Now, if you do decide to just install the caps yourself without cleaning, you won't need to open up the injector. To get the old pintle caps off you cut them with a razor blade and pry them off with a flat head. Slide new o ring on and press on new pintle cap, you'll know when it's in place as it kind of "snaps." Careful not to break it though. To get the filter out of the top, screw a small screw into the filter but don't go too deep, grab the head of the screw with some pliers and the filter should come out with a little force. To install the new filter, press it in, then lightly hit the top of the filter with a hammer until it is all the way into the injector.