FAST 102 and FAST fuel rail = fuel leak. Need better rail bracket
#1
FAST 102 and FAST fuel rail = fuel leak. Need better rail bracket
Anyone else having trouble with the fuel rail brackets (stanchions) that come with the FAST fuel rail kit and know of a bolt in bracket that cures the poor fit and fuel leak? The ones that came with the rails hold the rails up just a hair too high and the injectors are leaking.
After mounting the fuel rails on the manifold and building fuel pressure, we are seeing a leak on the driver side but not the passenger. During test fitting I noticed I was able to move the injector up and down a little bit with everything mounted and tightened.
Injectors and o-rings were installed correctly and o-rings were lubricated
All bolts and brackets were checked for proper fitment and torque
It appears the mount brackets are just junk, I found a couple threads where others said they had to make their own brackets. Anyone have a better idea? I would like to find some bolt in brackets that fit properly from the start, I don't want to put grinded up or rigged up brackets on this car.
Thank you!
After mounting the fuel rails on the manifold and building fuel pressure, we are seeing a leak on the driver side but not the passenger. During test fitting I noticed I was able to move the injector up and down a little bit with everything mounted and tightened.
Injectors and o-rings were installed correctly and o-rings were lubricated
All bolts and brackets were checked for proper fitment and torque
It appears the mount brackets are just junk, I found a couple threads where others said they had to make their own brackets. Anyone have a better idea? I would like to find some bolt in brackets that fit properly from the start, I don't want to put grinded up or rigged up brackets on this car.
Thank you!
#3
TECH Fanatic
iTrader: (45)
I had the same problem in the drivers side rear injectors leaking. My fix was I had to put a small washer under the front stanchion. The rail on the drivers side actually sat pitched forward a bit, causing the rear injectors not to seat properly. Putting that washer under the stanchion leveled the rail out and allowed them to all seat properly.
#6
I had the same problem in the drivers side rear injectors leaking. My fix was I had to put a small washer under the front stanchion. The rail on the drivers side actually sat pitched forward a bit, causing the rear injectors not to seat properly. Putting that washer under the stanchion leveled the rail out and allowed them to all seat properly.
And make sure you are using the thicker injector o-rings, they should have came with the fuel rail kit.
And make sure you are using the thicker injector o-rings, they should have came with the fuel rail kit.
I didn't see another set of o-rings but the guy I did the work for pre assembled the manifold and rails. I believe the o-rings on the injectors are the ones that came with the injectors. I will look into that for sure.
Thanks everyone for the responses, I am going to go ahead and grind/drill on the stanchions (brackets) here in a little while to see if that fixes it, originally I didn't want to do this but the car needs to get to the tuner sooner than later.
#7
TECH Addict
iTrader: (4)
Were yours far off from the right fit? Or just a hair? These seem like they are the right ones because they appear to mount up just fine but leak. I would assume the wrong ones wouldn't even be close..?
Thanks everyone for the responses, I am going to go ahead and grind/drill on the stanchions (brackets) here in a little while to see if that fixes it, originally I didn't want to do this but the car needs to get to the tuner sooner than later.
It's a little frustrating that these nice rails don't come with better brackets. Typical aftermarket laziness, lack of attn to detail....I digress lol.
Trending Topics
#8
So I fixed it. Turns out it was my fault though. When I started this project there were no instructions with the manifold and the guy I am putting the car together for pre-fit the intake, rails and injectors... so I didn't know the fat o-rings had to be used, or where they were supposed to be used.
For anyone having this issue, if you are using LS1/LS6 style injectors (not LS2) you have to use the fat o-ring on the bottom of the injector. It states this in the instructions but not very clearly, it's actually a little confusing because it says to use those fat o-rings with "LS1/LS6 applications with factory fuel rail"
Thanks for the help everyone,
For anyone having this issue, if you are using LS1/LS6 style injectors (not LS2) you have to use the fat o-ring on the bottom of the injector. It states this in the instructions but not very clearly, it's actually a little confusing because it says to use those fat o-rings with "LS1/LS6 applications with factory fuel rail"
Thanks for the help everyone,
#10
Turns out the real problem all along was that FAST makes a shim kit for use with 60# injectors, after installing that the leaks have finally stopped. The stanchions etc were all fine.
Also I kept installing the injectors while leaving the intake mounted, don't torture yourself, take the intake out and put in your new O-rings, injectors, shims or whatever you are doing and fully assemble it then put it back in as an assembly
Also I kept installing the injectors while leaving the intake mounted, don't torture yourself, take the intake out and put in your new O-rings, injectors, shims or whatever you are doing and fully assemble it then put it back in as an assembly