LIM gasket

Im doing the gasket repair and I was changing the fuel injector o-rings and noticed that the metal washer under the rubber o-ring is missing and one is cracked. is this a dealer item or can I get this at an auto store or do I have to replace the whole injector?

Im done changing my LIM & S/C gaskets, but as I was about to change my injector o-rings, I noticed the metal washers missing. The metal one under the rubber o-ring. Im missing one and another is only 3/4 left.
Can I get this part somewhere or do I have to buy two new injectors?

I just took off the broken one and looks like they are plastic and not metal. sorry guys.
Any ideas.?

CAN SOMEONE HELP ME OUT .........Im pretty much stuck and waiting for someones feedback on this issue...
thanks

Can you get us a picture?

Unfortunatly if its what I'm thinking of, your probably going to have to get an injector.

You mean the little tips on the end of the injectors?

Did you take a look into the heads to make sure they arent broke off inside there?

I hate to say it, but I'm pretty sure your going to have to replace the injectors.

review this post, is this what happened to you?

http://www.automotiveforums.com/vbulletin/showthread.php?t=947820

sure , bare with me im trying to upload.

Try www.imageshack.us

upload your pictures to there, and then take the "direct link to image" and post it here.

Yea that lil ring at the bottom of the injector...
im still trying to upload my pic but it looks like the one u sent me.

The tip isnt stuck in the cylinder head is it?

i think i got it try it.
http://img14.imageshack.us/img14/1324/limgasketreplacement005.jpg

I hope not, i found 1 ring in the floor and the other 1/4 thats missing havent found it , I will go out and look in the cylinder head. bummer I should of notice it when I pulled them out, my LIM & S/C are back on.

try this
http://img14.imageshack.us/img14/1324/limgasketreplacement005.jpg

Pic works.

Wow, I dont know. Did you buy replacement o-rings?

If it were my car, I might be half tempted to put a new o-ring on it and try and run it as it is. Just have to make sure the proken chunk isnt inside the head.

yes, bought new orings, and I didnt see that lil piece inside the head!

Is this a big concern or if this piece is inside ,will it drain out the bottom?

can I run the car the with out that tip?

No it wont come out the bottom.

I'd be afraid that it fell inside the cylinder head, then if you try running it, it could hold the valve open, and worst case scenario piston dig the valve....

I dont know. I would feel inside the cylinder head with a small screwdriver.

from the pic, it looks like you're going to need a couple new injectors.... But lets see what Bob and Rich say.

http://www.zzperformance.com/grand_prix/products1.php?id=249&catid=113

wow, them injectors are expensive. the price they show, is that for one or for six of them? not a good time to spend that kind of money.

Well if it did fall inside would it still be in there?

I believe that price is for the 6. Believe it or not 250.00 for 6 is a darn good price for injectors. Last time I had to replace one in a cadillac, a single injector was 100 bucks.

If it fell in, it would be sitting on top of the piston just waiting for you to turn your key and mess things up.

I don't know man, You've stumped me. I dont know what I would do.

What year is your car again? 2002? strange!

yes, tblake its a 2002 GTP

man you have me worry now.
I feel like tearing apart again.

also, why do we need to change the oil and filter when we do a LIM gasket change?
sorry for all the questions, but this is my first biggest job ive done on a car.

Please try to keep your posts in one thread without starting new ones based on the same issue. It gets confusing, causes redundant replies and more work for people to weed through the discussion.

Your post concerning fuel injectors has been merged with the LIM gasket post.

ok, sorry about that. I just replied .

You need to change the oil because of all the leftover gasket material, dirt, and crud you wiped off before you installed the new gaskets.

It is recommended to change the oil and filter again after 500-1000 miles once the job is done.

I dont know what to tell you about the injector seats.

If there was any coolant contamination in the engine due to bad intake gaskets then I would run some Seafoam engine treatment through it into the crankcase and then drain the oil and add a new filter.

The reason why our GTP fuel injectors are expensive is because they are rated at 33# (lbs) of flow, actually 36# but 33# advertised.

In comparison for the NA SII 3800 engine injectors are rated at around 21.5# flow.

ok, Im going to change the oil & filter , and put in regular 10w30, then like you said after 500miles, Ill change it again but this time I'll be throwing in my synthetic oil along with the matching filter by Mobile.

As far as the injectors go, can I buy some used ones for the time being?
I see zzp has some for $99 from old L67 engines.

As far as the injectors go, can I buy some used ones for the time being? I see zzp has some for $99 from old L67 engines.

That will work if you want to save money or try Ed Morad Parts Company on EBay.

Good thinking to replace the faulty injectors.

Thanks guys for your help & feedback.
It sucks seeing my car in the garage waiting to be put back together.
and I guess the next question will be, how to remove the injectors?
and another thing I didnt do before removing the fuel rail, was that I didnt release the pressure, from it. Is this ok?

I believe I have to drain the fuel , before I remove & install the new ones correct?

You will be fine, you dont need to drain all the fuel, but if you havn't disconnected the rail from the lines, you will have to release fuel pressure at the schrader valve.

The just pull the clips off from the top of the injectors, twist slightly, and pull. The injectors should just pop right out.

thanks tblake,
all I have to do now is wait till tuesday now i guess.
I will order the used injectors from zzp tomorrow and have them ship next day.

I will keep you updated on how everything went!
Thanks again,

Before you do that you should check around to local parts places. You might be able to find a new injector for a better price that zzp's used ones plus next day shipping.

well I did, and they want 99 for a new one,
now the price at zzp show for the injectors is that for one injector or set of 6?

All 6 which is a good deal.

Hey guys,
I just got my injectors from zzp!
and was wondering if I can disconnect all of my injectors from the fuel rail and set them in first, and then once all in, I can drop the fuel rail?

Or do I have to put them back in with the fuel rail attached?
thanks

I think it would be best to leave well enough alone. Put the new ones on the rail first, then put the rail on.

Don't forget to grease all the o-rings before install to make them go in easier...

Injectors are in and GTP seems to be running fine. (so far)
I tackeled this LIM & S/C gaskets replacement with all the info I found here and the help from you guys. No leaks so far.
Although, one thing is that I also changed my t'stat & ECT but the gauge still reads under 210, I tried to bleed out all the air possible already.

thanks

Good Job! Glad we could help!

See? I told you with our help you could accomplish anything! Not to mention if you brought this car to a shop it would have costed around 1000 bucks. Look at all the moolah you saved and not to mention when you fix things yourself, you seem to have a better sence of satisfaction in knowing you did it.

The stock temp t-stat is 195, so if it was running at 210, I would be worried. Below 210 seems normal. Heck, mine runs at 180 all the time. Even in stop and go traffic, it will peak at 195, but quickly drop back down to 180 when the fans kick on.

Good Job again, and let us know if there is anything else we can assist you with.

Hey guys, I was checking my LIM gasket this morning that I did last week and I noticed it was leaking from driver side. Looks like its coming from the lil orange/black part under the throttle body.
WHAT DO I DO?????????

do i have to buy a new gasket? or just re-apply rtv sealant?
goossshhhh, this sucks......

Sorry to hear that. What LIM gasket kit did you go with? GM or FelPro? Is it just oil?

I went with the GM aluminum ones, and looks like its oil.

Most leaks from the end seal gaskets would be oil. What brand RTV sealant did you use? Is the oil seeping from a corner or under the main part of the end seal gasket.

I used the black rtv and dont know really but , oil is seeping down both sides of engine block

How long did you let the RTV cure used at the 4 corners before starting the engine up? It requires at least 24 hours. I hate to be the bearer of bad news but you might have to redo it. This time try the FelPro brand LIM gaskets. I never trusted the GM revised ones.

Also, is the PCV valve OK and working?

jeesssus......................RE DO IT!

yes I used it at the four corners, and it cured for 48hrs due to me waiting for injectors from zzp.

If I would of known the gm sucked I would of never put them in.
but they seem sturdier than rubber ones.

GOD......not a good saturday morning.

if I replace em, do I have to replace the s/c gasket as well with the 2 o-rings too?

Ahhh Man! Thats no good!

Did you gob up the silicone on the end seals? Did you clean off the old silicone before applying the new stuff?

yea I cleaned up well, and plus my engine looks like new, compare to some pictures I've seen here.

and I put enough gooh, I dont think I goo-d them up too much though!
you think that might of been the problem?

do I have to re-buy the other stuff too?

like the coolant elbows, s/c gasket, 2 o-rings?

also, when I re do it, can I put rtv sealant on the bottom of the end seals?
or just the corners?

As long the coolant elbow does not break you do not need to replace it again. I would think that the o-rings on the supercharger would not need to be replaced again.

If the car hasn't been ran for very long and the supercharger gasket comes off ok, you should be good there too.

Not sure what I would do on the LIM gaskets.

BTW, what torque did you use on the LIM bolts?

For the cost I'd replace the LIM gaskets with the FelPro brand. It should be under $50. Also, it would be a good idea to take the LIM to an auto machine shop and make sure it is true or not warped which does happen.

ok, Ill be shoping around locally for the felpro rubber gaskets.

But I torque'd the bolts as follows, like u guys told me too.

LIM 11 ft/lbs
S/C 17 ft/lbs
Tensioner 37 ft/lbs

Torque specs look good, you did tighten in sequence, right?

I dont know what to tell ya.

Are you sure the valley gaskets are in the right direction?

(Refir to the pictures in this post) Both Bob and I used the felpro set although the GM set shouldnt be much different.

http://www.automotiveforums.com/vbulletin/showthread.php?t=936863

Whats up guys.
Yes I did tighten them in sequence, and Im going to start putting it apart today, and see how the valley strips look.
From what it looks now, seems that the one thats leaking might of moved.
Oh, well lets hit it for the firm......
and I will make sure I "gooh" up the corners with blak rtv!

I will keep you guys updated.

I just finished taking it apart and looks like there wasnt enough rtv sealant on the driver side valley strip, under the throttle body.

Uhmmmm, I guess I'll be gooin' it up this time...

Just finished up putting the GTP back together, took the GM aluminum gaskets off and replaced them with Felpro's.

all I need is the PCV yellow rubber o-ring!
Is this something I can buy separate or do I have to buy the whole pcv?

You had to remove the PCV Valve from the supercharger?

You should just be able to go to the dealership and buy a new O-Ring. Might as well replace the PCV Valve while you have it out.

Question guys. That yellow o-ring im talking about, it is from the pcv valve isnt it?
I went to autozone and they showed me a regular looking pcv valve and the one on top of my supercharger has three hoses going to it!
What is that then?

There should be two yellow O-rings, they go on top of the LIM, under the supercharger. They flow coolant to your throttle body.

hey tblake,
The part im talking about is called " manifold vaccum seal" according the a tech at gillespie pontiac in chicago.
and what I need is the o-ring for it.
but unfortunetly they didnt stock it, and I needed my car.
so I went to autozone and bought myself an o-ring kit, and found one that was snug for that piece. and it worked.

This piece sits piece sits on top of the supercharger wich has three ports, and I know the big hose goes by the master cylinder.

All im hoping for it now, is to not leak!
Wish me luck.

Ahh, yeah I know what your talking about now.

Good Luck!

I'm sure you'll be fine!

BTW, My LIM gasket has been leaking since january/february, and friday its supposed to be nice here, so I'll probably get it changed.

I did order the metal framed gaskets from GM, so I hope they do alright for me.