I just bought a 1990 Camaro RS from this guy on ebay. Not a bad deal. However, there was no oil, and what little was left was 20W-50, and radiator had nothing but rusty water. I flushed radiator and thats all taken care of. I changed oil with some mobil 5W-30 that supposedly helps clean things up and filter, very cheap filter on before by the way, and got a whole bunch of other filters, etc., like breather, air, pcv valve... I started it up and it sounded normal with rough idle from being 30 degrees out. After it warmed up a little, it would surge and/or die after changing gears or lettin off the gas. When it died, only thing that got it going again was holding pedal to floor while cranking, like when it floods. I checked it out after I barely got back to house and there was gas everywhere, and I started it up and driver side fuel injector had gas leaking out the top of it kinda bad. I was wondering if injectors going (because of leaking), and why it seems to be flooding so badly (I'm thinking it could be confused computer, esp since old air filter was pitch black). Also, are the little connectors on top of injectors replaceable, one of mine lost a tab.

 

You said you changed the timing since it was 30* out. Did you set it correctly?

 

Wouldn't be a bad idea to buy a tbi rebuild kit and see if that stops the leaking injector. Sounds like an o-ring could be bad. If that doesn't solve the problem then go to an auto salvage and pick up some used injectors out of a camaro or anything with a 305 tbi in it.

Steve

 

hey shiftycapone, by 30 degrees i was referring to temp outside. It was running rough at first since engine was cold, like they all do. Timing is something im afraid to mess with, esp since i dont got the stuff for it.... probly needs timing checked tho now that you mention it. anyway i thought i would clear that up for you

 

Phew.. I was gonna say.

Anyways I would do what steve sugested with the TBI gasket kit. You could have a cracked O-ring or have a bad seal around your regulator or injector pod.

 

would they sell a rebuild kit at a regular parts store like a Parts Plus or AutoZone? about how much do they run and how involved is the whole process?

 

How much did you get the car for? Did the seller say it was in good mechanical condition before you bought it? If so, that means he is in violation on eBay's policies and you can get your money back to fix the car up!

Bruce (90RS305)

 

About a TBI rebuild kit, yes, you can get one at most auto parts stores. I got mine from Autozone but I know Advance (Checker, etc.) has them, too. It took me about half a day to a day to do it but it is not hard, it just takes time. Instructions are included and if you have a basic knowledge of how things work you can do it yourself and it is pretty easy.

 

would anyone happen to have a part # for the kit? one of the autozone's by me said they didnt carry such a thing so maybe if i got a # they can see if they can order it. another place by me said it would be about $60 so maybe i can double check to see if they got right thing i need.

by the way, thanx for everyones help so far. :yourock: hopefully this will be over soon

 

Last time I checked Pep Boys had them by special order only. I think Echlin or whoever owns the brand name rights to Borg/Warner still makes them and markets them under the B/W brand name.

 

Yeah... thats about the condition taht most of my cars are in when I first buy them. Makes every car a challenge

 

check for intake/vacuum leaks... rebuild the injector pod... run some gas cleaner....

 

The part number for the TBI rebuild kit is 97-724. It is made by GP-Sorensen and is $36.99. The reason why they couldn't find it is because it is called a "Throttle Body Injection Tune-Up Kit." I had the exact same problem that you did when I tried to get mine.

 

Are those a good idea on a good working TBI? I'm gonna do the Ult. TBI mods when I get the courage, but if that TBI kit is an all around good idea I might do that for now...

Bruce (90RS305)

 

well i got a kit for $60...and aside from fuel pressure regulator, very easy to do. I cleaned everything up and it looks alot better. however, MFing thing still leaks I did examine it and it seems to be the injector itself... i saw new one at autozone site for $84 i believe.... if anyone experience buying new ones, does this price seem about rite or autozone got wrong part (they talkin bout fuel rails in "reccomended replace" section thing ) otherwise im gonna go carb and stop the madness

thanx for help again guys/girls (whichever ur case) :hail:

 

Ah man it is so easy. You can do it!!!!! (rob shnider voice)

 

The autozone ones are garbage and spray poorly for some reason. Internally they look like standard GM injectors but maybe the tolerances arnt as good. Where exacly is it leaking from? Did you remember to put clean motor oil on the o-rings so they didnt tear?

 

Just pick up some used ones at the boneyard off an engine of the same displacement.

Steve

 

Make sure it is indeed the injector that leaks. These things are almost bullet proof. The tbi injectors are the most durable around and can usually be brought back to life by a good cleaning.

 

ill check it all out tomorrow since i dont gotta work... it did seem at first it was leaking around the middle part where screw is on the injector itself. ill take the top apart again to make sure rings are all good, and oil them up real good.

one quick q tho, well actually 2... if it is the injector, if i were to put a sealer thats not volatile to gas on spots of suspected leaking, would it work or pressure too high? also how hard is it to replace the electrical connectors going to fuel injectors, because mine were so brittle the tabs broke as soon as i touched them?

thanx for help again guys/girls. hopefully the madness will end and i can drive it without worry

 

oh by the way, brand of gaskets is "standard makers of famous blue streak products" which i got at parts plus store, which a lil better then az, but more $$.

also, dimented24x7, or whoever else that knows, all the gp sorensen stuff az uses crap or just like the injectors? and if so, and parts plus place has these standard brand injectors, would you think theyd be worth it or they also be ?

(about to throw a carb on it )

 

Dont throw a carb on it. The problems your having are very minor. definatly not worht the time and agrivation to convert over. I didnt think much of the gp sorenson injectors. Didnt have a good spray pattern. The Oe service stuff is ok. Find out EXACLY where its leaking from. You may even have to remove the pod and hook it up seperatly to make sure it is indeed leaking from the nozzle and not from around the tip of the injector. The best bet would be just to get a used set. They seldom go bad and as long as the coil inside is still good, the injector is fine.

 

What I would do is disasemble the pod, check to make sure everything is ok, like no torn o-rings or anything. Id also give the injetors the 'smelly gas kiss' as my brother likes to call it and see if they really leak. If theyre leaking alot then they should pass a noticable ammount of air when a low pressure air source is hooked up to the injector tip.

 

well i checked it out today, disconnected fuel pump fuse and removed all the pressure. i then plugged fuse back in and watched the injector as someone turned key to "on", and noticed a ton of little bubbles coming out by the one pin for the connector, and nothing around edge to indicate an o ring failure, so i believe the seal for that pin has blown and i now have a faulty injector

does anyone know of anything like gasket sealer that wont be eaten up by gas and can withstand the pressure so i can at least temporarily fix it? if i remember, rtv is no good since i believe it said not to be used in contact with gas, so thats out of the picture.... theres the black stuff, i dont remember what it called offhand... (my brain thinks its like 2U or somethin, been a while since i used it) ... anyone think that would work?

if all else fails ill just get some new injectors thanx for help guys/girls

by the way, except for when gas that collected on top of injector pod overflows and bogs it out, thing sounds really nice runnin a lil rich

 

Sounds like an internal seal failed inside the injector. The fuel passed by the coil and is exausted out a small orafice on the side of the injector to keep the coil cool. It looks as though the o-ring they use to seal it off has failed and its leaking. Definatly new injector time. Id suggest either a used set or injectors from gm. I think they still ahve them available.