Alfa Romeo Giulia Forum banner

Another blown bleeder screw saga

1.7K views 15 replies 10 participants last post by  wingler  
#1 ·
I have just over 50K miles on my '18 QV, and several months ago got the SS bolt with the specific EDPM Oring from Jason. Hadn't gotten around to replacing the fragile plastic one, and two days ago got home from a 200 mile drive and noted a whiff of coolant from my hood, and there was a slow leak from the failing screw. Put my finger on it, and it snapped completely off and then a big spray of coolant;

I know some chaps remove the broken stub of the screw from above, but decided I was only going to get one chance to do this, and avoid dropping the O ring or new screw to be lost. So used my new "special" pliers to remove the big clamps in the inlet pipes, and after unclicking the coolant line clips on back of the airbox, removed all of that to have clear access to the repair. If not, the angle to deal with the problem is not optimal for removing the broken screw, and getting the O ring properly in its groove. Unhooked the bleeder connector from the firewall to allow me to hold it securely for my effort.

Tried an easy out to unscrew the srew, failed, and then heated a small phillips driver, and after letting it cool, crossed my fingers and it came right out. Cleaned it all up, placed a rag to catch the new parts if it fell, and applied a dab of dielectric grease and installed the new parts.

One of the airbox clips for the small hose snapped off, so will source a replacement for that and I can pop that back on with the airbox fitted.

Decided to replace air filter with OEM from Jason, and have that an the "pink" coolant coming.

A few pictures, and for those delaying this procedure, don't, and you are only going to get one chance to do this, so take off the airbox.

Here a few pictures. NV
Image
Image
 
#3 ·
Well done, sir. No, I don't think you need to bleed. Any air should make its way, eventually, to the reservoir. As long as the heater works well and the engine doesn't overheat, there obviously isn't a major air pocket in the system.

I replaced both of the bleeders on my 2.0 before they broke so didn't have the surgical experience you had!
 
#7 ·
How easy of a fix is this, if there are no issues currently? I.e. is heating up a screw driver to remove the old screw necessary? Etc.
 
#8 ·
Some owners have reported the screw head breaking off at the head when they took out the old screw.

If that doesn't happen, it's only a matter of replacing the old screw with the new one...
However, it is very awkward. Getting the new screw started takes a little finesse.

I suggest putting rags everywhere the new screw could potentially fall when you replace it.
 
#9 ·
True, i was barely able to touch my QV's plastic screw with my finger tip, and as I began to unscrew it, it broke off with a big leak. It is a very tight fit to get to the screw, and I doubt one could put their fingers on a replacement without having the O ring or the new part flip off or perhaps cross thread. Plus the housing is tipped towards the firewall, so even a screwdriver can't get a straight angle to try to get it out, and it has to be a precise size to not melt the inner threads. Replacing the whole fitting is not something that a home mechanic likely has the special clamp pliers to accomplish. It only takes a couple of minutes to remove the whole airbox to have unfettered access and not risk loosing the new parts, and using a proper sized phillips heated driver to do this without further "issues". I have never removed my airbox and it only took a few minutes, but get the special clamp pliers via Ebay for ten bucks. Plus I decided to replace my air filter with it all off, got it coming with the proper coolant from Jason, and if it is time for an oil filter change, easy to do with full access.

The truism "...haste makes waste..." really applies to this replacement, esp on an old, heat damaged plastic screw.

One of the plastic clips on the back of the airbox that holds the small cross water line snapped off, and the small clips are not available separate from replacing the whole airbox, and I will post pictures of my solution to this potential issue this coming week. It is necessary to reach back there and unclip the small line to avoid kinking it when raising the airbox to replace the oil filter.

Off to the Rolex 24 in a few days with my son and his 7 and 10 year old lads, something they just love. Meals at a nearby sports bar, hotel at the beach with pool and hot tub. A 6 hour drive for us. I have been going for over 20 years.

All the best, NAM VET
 
#14 ·
If you do, please let me know how much they charge. Mine wanted around $200 because they wouldn’t do it without also bleeding the system (as a precaution).
 
#16 ·
I’ll spend the money since it seems like a 50/50 chance the old ones break when you’re trying to replace. Also, the one away from the bulkhead is pointing straight down in my car. I’ll let the dealer handle.