JA Injectors, PICS NOW UP... Help!?

someguy · Post by **someguy** » Wed Oct 07, 2009 6:59 pm

Sorry to start a new post which kinda relates to my other "JA Warm start" post before, but...

Just wondering if the injectors are leaking, do I need new ones or are they clean/fixable?

(I'm over rolling around in a Commodore... :( boring.., need to actually drive again!)

cheers :)

S0LJAH · Post by **S0LJAH** » Wed Oct 07, 2009 7:03 pm

im no expert as i dont own a starion but i believe there is no fix for them and new ones are impossible to find

need good second hand parts i think

someone else will fill the rest in

redzone · Post by **redzone** » Wed Oct 07, 2009 10:36 pm

none available anywhere new, only second hand ones now, usually when you try and fix all the seals in the mixer the injectors start leaking out the sides

Post by **Alspos** » Thu Oct 08, 2009 6:57 am

Do a search. You can pull it apart and replace the o-rings in it. They tend to leak around the top of the injector itself, symptom is fuel pouring out the hole the wires feed thru at the top of the ECI

http://forums.austarion.com/viewtopic.p ... ight=oring
http://forums.austarion.com/viewtopic.p ... ight=oring

someguy · Post by **someguy** » Sun Nov 01, 2009 6:33 pm

Ok, so pulled the top off, and found coolant coming out this small hole inside the throtle body?? Should this even be a hole? Doesn't look right to me...

hmm... cant seem to upload pics, it says they are successfully uploaded, but?? what am i doing wrong... grrr :x

anyway, there is a hole inside the throttle body, under the air intake & above the butterfly, it doesnt seem very deep, (I stuck a bit of wre in there) & it looks like it's cast into the body, not a corrosion hole or anything...

any help in fixing pics, or car would be awesome, I'm getting pretty frustrated now...
cheers.

someguy · Post by **someguy** » Sun Nov 01, 2009 9:27 pm

actually, you can just make it out in the 3rd pic on this link,

http://forums.austarion.com/viewtopic.p ... ight=oring

down inside the throttle body, in the centre, where the black(build up) & silver(clean) areas meet you can see the reflection of the edge.

So I guess it it supposed to be there, but leaking coolant ??

someguy · Post by **someguy** » Tue Nov 03, 2009 7:55 pm

woo hoo, worked out how to do pics!!
1st one i'm pointing to the hole with a screwdriver.

2nd one you can see the marks where coolant has been running down, & its all sitting in the bottom

starion_eci_02.jpg was successfully uploaded!

Show Image:

Show Link : http://www.fr33z3.net/starions/Apr06/starion_eci_02.jpg

starion_eci_01_copy1.jpg was successfully uploaded!

Show Image:

Show Link : http://www.fr33z3.net/starions/Apr06/st ... _copy1.jpg

diabking · Post by **diabking** » Wed Nov 04, 2009 10:28 am

just been messing around with my injectors etc and found that when i removed the top hat coolant started leaking from the base of the throttle body unit and into the intake. There is a gasket at the base that starts to leak. due to the fact that two of the bolts for the top hat hold the rear of the unit down and will allow coolant to leak through into the unit. im not 100% sure but think that hole is for idle allowing enough air past while the throttle is shut. i at the moment am flow testing, checking spray pattern etc of the starion injectors and have successfully put new injectors in the top hat, with some modifying. just havent got the flow rate right yet but when i do i will let you know.

someguy · Post by **someguy** » Tue Nov 17, 2009 2:45 pm

diabking wrote:just been messing around with my injectors etc and found that when i removed the top hat coolant started leaking from the base of the throttle body unit and into the intake. There is a gasket at the base that starts to leak. due to the fact that two of the bolts for the top hat hold the rear of the unit down and will allow coolant to leak through into the unit. im not 100% sure but think that hole is for idle allowing enough air past while the throttle is shut. i at the moment am flow testing, checking spray pattern etc of the starion injectors and have successfully put new injectors in the top hat, with some modifying. just havent got the flow rate right yet but when i do i will let you know.

well I had the injectors cleaned, & cleaned up/changed their o-rings, put it all back together to see what happens & its still getting in, looks like I'll need to do the gasket at the base, thanks for the info :)
apparently the hole is for idle or something, coolant is just sitting in there, not coming from there, phew, thats a relief.

coop1er · Post by **coop1er** » Tue Nov 17, 2009 4:49 pm

It probably is just the base gasket leaking in your case. But if that doesn't fix it then you should know that those holes in the throttle body go through the intake manifold and up to the intake manifold gasket face on the cylinder head. So other possible sources of the coolant are head corrosion, intake manifold gasket damaged or intake manifold cracked/corroded.

someguy · Post by **someguy** » Wed Nov 18, 2009 5:28 pm

coop1er wrote:It probably is just the base gasket leaking in your case. But if that doesn't fix it then you should know that those holes in the throttle body go through the intake manifold and up to the intake manifold gasket face on the cylinder head. So other possible sources of the coolant are head corrosion, intake manifold gasket damaged or intake manifold cracked/corroded.

ok thanks...
seeing as I've had the top off 3 times in the last month, I'm pretty sure it will just be the bottom seal

djalpha · Post by **djalpha** » Sun Dec 13, 2009 6:44 pm

For anyone out there, make sure u drain the coolant level below the seal. as u have found out coolant will enter the inlet manifold and sit on top of your pistons when u remove the two long bolts on the injector hat. i would advise removing your plugs and cranking over the engine to disperse the coolant before u fire the motor.

someguy · Post by **someguy** » Fri Dec 18, 2009 5:40 pm

djalpha wrote:For anyone out there, make sure u drain the coolant level below the seal. as u have found out coolant will enter the inlet manifold and sit on top of your pistons when u remove the two long bolts on the injector hat. i would advise removing your plugs and cranking over the engine to disperse the coolant before u fire the motor.

Ok, so after pulling it apart & putting it all back together again (twice) I seem to be right back to where I started from
It won't start!!!

I now have nice clean injectors and the seals are all good, it's getting fuel and spark, but it just seems to be getting confused... cranks & cranks but doesn't kick. I feel I have taken a real long round trip creating my own coolant/gasket/seals hassle without solving the original problem at all :(

OLD FART · Post by **OLD FART** » Fri Dec 18, 2009 8:00 pm

Time to bite the bullet and go MPI

someguy · Post by **someguy** » Fri Dec 18, 2009 11:59 pm

yeah mpi would be nice, but by the time it's all on & set up $$ becomes a factor. I'm not working on it myself because I think it's an excellent & joyus way to pass my time... although not having the car going is equally crap.
I can do stuff, but trouble shooting & doing stuff with a net result of '0' doesn't get the thumbs up. Patience is running out :(

Austarion

JA Injectors, PICS NOW UP... Help!?

JA Injectors, PICS NOW UP... Help!?

maybe it's not the injectors..???

pics now up

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