injectors leaking under boost
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From: K.C.
injectors leaking under boost not fuel. did a boost leak test on an 01 camaro. all 8 injectors are bleeding pressure. put in new o-ring seals, but apparently they are not thick enough. the injectors are 60lb seimans/msd injectors. fuel rails are aeromotive rails. is there a simple fix for these things. or thicker o-ring's for it to get a good seal???
no boost leaks from the turbo all the way up to the throttle body, just the injector seals.
no boost leaks from the turbo all the way up to the throttle body, just the injector seals.
When we changed injectors on a car or took them out for some reason. Then reinstalled them. We put a little petroleum jelly on the o-rings. It done 2 thing. 1 protected the o-rings during the install and helped with the sealing. I know it may sound silly but that was what I was taught any way. Get all new o-rings and if you want to try a size bigger on them then try that too with the petroleum jelly. I worked back in the day. This is my second time around the race scene.
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From: K.C.
When we changed injectors on a car or took them out for some reason. Then reinstalled them. We put a little petroleum jelly on the o-rings. It done 2 thing. 1 protected the o-rings during the install and helped with the sealing. I know it may sound silly but that was what I was taught any way. Get all new o-rings and if you want to try a size bigger on them then try that too with the petroleum jelly. I worked back in the day. This is my second time around the race scene.
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From: K.C.
three options. top hats from the id1000 injectors. injector grommets {dsm/honda style}, or grind the manifold.
judging by the level of responses i have gotten thus far, i can say im on my own.
judging by the level of responses i have gotten thus far, i can say im on my own.
They do leak, sometimes it just takes a new O-ring, I've been there. I just take off my air filter, hook up my air compressor to the turbo inlet with my home made adapter, it has an air regulator on it. I turn the regulator all the way down, & slowly turn up the air pressure till about 10 psi. After that I start spraying my soap & water solution all over any connections, vacuum caps, silicone couplers, injector's, compressor housing, & fuel pressure regulator (if boost/vac referenced). You would be really surprised what you find, I do it a day or two before any trip to the track & any time I disconnect any part of my charge pipe system.
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Had the same problem with mine,
Ended up getting some slightly thicker o rings and that fixed it,also make sure your fuel rail sits nicely on the injectors, you may need to adjust the mounts some.
Ended up getting some slightly thicker o rings and that fixed it,also make sure your fuel rail sits nicely on the injectors, you may need to adjust the mounts some.
Just tested mine last night. I have the same problem, mine are used orings so I'm going to get some new ones and hope that fixes the problem. I too would like to find something a little bigger. I saw some that were for using a standard injector on a LS2/LS3/LS7. I think they have the same inside diameter of the LS1 oring but the slightly larger outside diameter of the LS2. I'm not sure if they would even fit in the LS1 intake. dont know if they are a sponsor so I won't post a link. google GM LS2, LS3, LS7 Intake Manifold Adapter Fuel Injector O-rings
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From: K.C.
not my car. we had this discussion. 
http://www.ebay.com/itm/LS3-intake-m...525#vi-content
lingenfelter has em
Just tested mine last night. I have the same problem, mine are used orings so I'm going to get some new ones and hope that fixes the problem. I too would like to find something a little bigger. I saw some that were for using a standard injector on a LS2/LS3/LS7. I think they have the same inside diameter of the LS1 oring but the slightly larger outside diameter of the LS2. I'm not sure if they would even fit in the LS1 intake. dont know if they are a sponsor so I won't post a link. google GM LS2, LS3, LS7 Intake Manifold Adapter Fuel Injector O-rings
lingenfelter has em
Last edited by Area47; Jan 21, 2012 at 05:39 PM.
Thread Starter
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From: K.C.
fixed the leaks last night at the shop. used injector grommets that are for a honda. put a tiny o-ring in the center of the grommet. looks like a little hamburger when done. the grommets were a hair larger than the oem seals. greased them up and put them in. not easy to do, but seals perfectly. zero boost leaks now, time for a retune.
