Red95GP Posted March 11, 2009 Report Share Posted March 11, 2009 ugh, im sooooo pissed! Just a lil bit ago I find out one of my injectors is leaking. the one closest to the alternator(3100). I when to the store and parked, 15min later I goto my car and start it....well theres a nasty gas smell and im like wtf...so when I get home and pop the hood I see a nice smoke show around the acc. belts. I smelt a weird smell...like oil/gas burning so I start investigating and I find the injector soaking wet and and all around it its damp. The shitty part is I already did the injector o-rings like 3 months ago. Surprisingly last time I did it I think it was because I put some seafoam in the tank and guess what....this time I put seafoam in about 2 days ago....coincidence? I think not. Fuck seafoam!! Quote Link to comment Share on other sites More sharing options...
Night Fury Posted March 11, 2009 Report Share Posted March 11, 2009 Yeah! Lets blame something else! Quote Link to comment Share on other sites More sharing options...
Red95GP Posted March 12, 2009 Author Report Share Posted March 12, 2009 Yeah! Lets blame something else! .....? Quote Link to comment Share on other sites More sharing options...
Crazy K Posted March 12, 2009 Report Share Posted March 12, 2009 I doubt the seafoam claim. hell, just to test, I might throw some O rings in seafoam for a week and see if they dissolve. i find the 3100 injectors are hard to install, even when greased with dielectric grease or petroleum jelly. it would be very easy to fowl them up when you stick them in. you may have one that was not clipped in place and eventually moved outward/down till is sprung a leak. Quote Link to comment Share on other sites More sharing options...
SigEpCutlass Posted March 12, 2009 Report Share Posted March 12, 2009 I doubt the seafoam claim. hell, just to test, I might throw some O rings in seafoam for a week and see if they dissolve. i find the 3100 injectors are hard to install, even when greased with dielectric grease or petroleum jelly. it would be very easy to fowl them up when you stick them in. you may have one that was not clipped in place and eventually moved outward/down till is sprung a leak. Speaking from experience, Ken is right the injectors for the L82 are a bitch to put in. Take it back apart and make sure the injector is correctly installed. Quote Link to comment Share on other sites More sharing options...
swift13 Posted March 13, 2009 Report Share Posted March 13, 2009 you can quick check by taking a pry bar or longer screw driver and see if you can force the fuel rail down anymore if you can then the inj. is loose if its solid probably got a bad o-ring, you dont even have to take off the uim. to check it that is Quote Link to comment Share on other sites More sharing options...
Red95GP Posted March 15, 2009 Author Report Share Posted March 15, 2009 I only blame the seafoam because the two times its happended it had seafoam in the tank. I didnt even put in a 1/3 like reccomended. I would guess it was just under 1/3 and I filled up the tank. I replaced the injector with one that I got from a junkyard and it still managed to leak. I put new o-rings on it and lubed them up. They whent on fine when I put them on the fuel rail, and when I placed them in the motor everything seemed fine. I double checked that all injectors were properly seated before putting the screws on and it still managed to leak. Not sure whats up with it. Im gonna take everything off again and try another injector that I have. Quote Link to comment Share on other sites More sharing options...
swift13 Posted March 15, 2009 Report Share Posted March 15, 2009 can you see which injector is leaking or just the area by the alternator? maybe you have a bad schrader valve on the rail or something Quote Link to comment Share on other sites More sharing options...
rmorris97024 Posted March 15, 2009 Report Share Posted March 15, 2009 Are you using the thicker injector o rings or just regular one that you buy anywhere? I have replaced injectors on my 3.1, 2 times now with junkyard ones never had them leak because i got the special thicker injector o rings and torque the fuel rail down. the only crap part about used injectors is I can never find good injectors. Everyone uses injector cleaner on thier cars and ruin there injectors. so when i get them from the wrecking yard they usually really out of spec ohm readings from the coils being eaten away from injector cleaner and they leak internally. Theirs an actual gm tsb for the mpfi motors not sure about spfi engines havn't read up on them yet. Quote Link to comment Share on other sites More sharing options...
Red95GP Posted March 17, 2009 Author Report Share Posted March 17, 2009 I got the o-rings from advance auto parts....they were in a generic o-ring pack with many different sizes. Ill go to the dealer tommorow and see what they have. I forgot to ohm test it so ill do that when pull the intake again. Quote Link to comment Share on other sites More sharing options...
xtremerevolution Posted March 17, 2009 Report Share Posted March 17, 2009 I got the o-rings from advance auto parts....they were in a generic o-ring pack with many different sizes. Ill go to the dealer tommorow and see what they have. I forgot to ohm test it so ill do that when pull the intake again. Might be worth noting that 3 weeks ago I put in an entire canister of seafoam in my full tank of gas, and I have yet to see an injector leak. My injectors are 195,000 miles old, although the o-rings are only 7,000 miles old. No leaks yet. Seafoam won't cause your injectors to leak. Quote Link to comment Share on other sites More sharing options...
Red95GP Posted March 17, 2009 Author Report Share Posted March 17, 2009 can you see which injector is leaking or just the area by the alternator? maybe you have a bad schrader valve on the rail or something Dont know what number it is but it the one that is in the back row all the way to the left when ur standing in front of the car. Quote Link to comment Share on other sites More sharing options...
Red95GP Posted March 17, 2009 Author Report Share Posted March 17, 2009 I got the o-rings from advance auto parts....they were in a generic o-ring pack with many different sizes. Ill go to the dealer tommorow and see what they have. I forgot to ohm test it so ill do that when pull the intake again. Might be worth noting that 3 weeks ago I put in an entire canister of seafoam in my full tank of gas, and I have yet to see an injector leak. My injectors are 195,000 miles old, although the o-rings are only 7,000 miles old. No leaks yet. Seafoam won't cause your injectors to leak. dam....idk then. I just figured the seafoam had something to do with it since the only times its done it its when the seafoam was in there. Quote Link to comment Share on other sites More sharing options...
Crazy K Posted March 18, 2009 Report Share Posted March 18, 2009 I got the o-rings from advance auto parts....they were in a generic o-ring pack with many different sizes. Ill go to the dealer tommorow and see what they have. I forgot to ohm test it so ill do that when pull the intake again. sound like the wrong ones. personally, I've got mine at AutoZone, and they come in a pack of 12 and are brown in color, and are specific purpose for fuel injectors. Quote Link to comment Share on other sites More sharing options...
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