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melted injectors

This is a discussion on melted injectors within the General Help forums, part of the LSx Technical Help Section category; So I was cleaning my engine bay when I saw that my injectors were melted. We had a flood recently ...

  1. #1
    Moderator 98TransAmWs-6's Avatar
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    melted injectors

    So I was cleaning my engine bay when I saw that my injectors were melted. We had a flood recently and some whater may have gotten in my engine, could water have pooled around the intake and melted the injector while the engine was running? The engine seems to be running fine, and it doesn't seem to be over heating. It doesn't even get to the 210 degrees mark when driving for a while. How could this happen? Could the intake cause this? My mods are in my signature. I really need to figure out what caused this, I don't want to end up buying injectors and they melt again. Here is the best picture I could get:
    1998 Trans Am WS6 - Phantom
    421 CI LQ9, Tick Performance Custom Cam, TFS 255cc LS3 heads, Kooks 2" LT headers, Kooks 3" True Duals w/ high flow cats, FTP 104 lid, Speed Density Tune, 4" silicon tube, LS6 VCT, FAST 102 Intake, NW 102 TB, Oil Catch Can, SLP Bilstein Shocks w/ Vogtland Springs, CTS-V 4-piston Calipers w/C6 Z06 rotors, Stainless Steel Brake Lines, R1 concepts premium rotors, Hawk HP+ brake pads, VFN WSQ Hood, C5-R timing chain, SLP oil pump, E85 tune, Walbro 450 fuel pump, Deatschwerkz 95# injectors, Breathless performance headlights, Frost Tune, !HVAC.
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    Smiles for 9.5 Years cammed goat's Avatar
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    I don't think just water would cause your injectors to melt like that. Do you use any chemicals to clean your engine?

    Edit: Are you absolutely certain that is melted rubber and not just dirt buildup?

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    Moderator 98TransAmWs-6's Avatar
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    Quote Originally Posted by cammed goat View Post
    I don't think just water would cause your injectors to melt like that. Do you use any chemicals to clean your engine?

    Edit: Are you absolutely certain that is melted rubber and not just dirt buildup?
    I do use chemicals but always with a rag and never on the injectors. It appears to be melted rubber, as it seems to be attached to the injectors. I will check and see if I am throwing any codes. Should I replace them first? I just don't want replace them and they melt again. I know I need to I just want to figure out what did it first. The intake after 15 minutes or so doesn't seem to be that hot, so I am thinking that isn't the cause. Any suggestions would be great.

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    Can you post a better pic? Hard to see what is going on there.
    Last edited by pajeff02; 09-19-2011 at 04:05 AM. Reason: Spelling.

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    Yeah baby! Yeah! silverWS6's Avatar
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    That doesn't look melted to me just likes like dirt/grease stuff

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    Did you do the intake swap your self? If so, did you replace the o-rings for the injectors? If not then what you may be seeing are little bits and pieces from the o-rings falling apart. I can’t really tell from the pic though.

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    Moderator 98TransAmWs-6's Avatar
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    Here's a hopefully better picture:

    I didn't do the intake myself this time. After looking at it again it looks like gasket maker, does anyone else agree? Anyone seen that before?

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    Member RedSuperSport's Avatar
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    Looks like grease that somebody put on the o rings to make the injectors pop in easier, and the excess squeezed out, over time its gotten dirty and turned black and now looks like it does

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    Rub your finger on it

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    It feels like liquid silicone that has dried up somewhat.....I feel like an idiot.
    Last edited by 98TransAmWs-6; 09-19-2011 at 07:50 AM.

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    I was going to say that it appears to be black RTV -- looks like you guys got it figured out. Strange that they would RTV injectors like that...

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    Member RedSuperSport's Avatar
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    Quote Originally Posted by 98TransAmWs-6 View Post
    It feels like liquid silicone that has dried up somewhat.....I feel like an idiot.
    No better safe than sorry lol

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    Quote Originally Posted by pajeff02 View Post
    I was going to say that it appears to be black RTV -- looks like you guys got it figured out. Strange that they would RTV injectors like that...
    Yea considering they have o-ring gaskets, makes you scratch your head a start to wonder

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    BANGIN GEARS>STAB N STEER BLK2KSS's Avatar
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    they prolly didnt think the seal was good enough and put some rtv on em just incase... idk... weird

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    Looks like the same stuff they used on the intake gaskets.

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    ʢ ൧ ൨ ൩ ൪ ൫ ൬ ൭ ൮Ր Ց Ւ Փ Smittro's Avatar
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    Injector bodies are made of high carbonized chemical resistant plastic, the likelyhood of them melting from anything other than an engine bay fire is very slim..

    Even battery acid won't melt them..

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    Quote Originally Posted by Smittro View Post
    Injector bodies are made of high carbonized chemical resistant plastic, the likelyhood of them melting from anything other than an engine bay fire is very slim..

    Even battery acid won't melt them..

    Is there a story behind this?

  18. #18
    ʢ ൧ ൨ ൩ ൪ ൫ ൬ ൭ ൮Ր Ց Ւ Փ Smittro's Avatar
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    Quote Originally Posted by pajeff02 View Post
    Is there a story behind this?
    Well lets just say there was one huge mess, and later on the same car there was a small fire..

  19. #19
    Smiles for 9.5 Years cammed goat's Avatar
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    If it's RTV, then that was put on to keep water out and keep the engine from going "BOOM" in a rain storm.

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