OZ951

The cap doesnt actually sit in the cylinder, it is behind the valves so it doesn't get exposed to the same conditions.

I would not worry about it, it will not do the turbo any damage if it happened to get that far in one piece. The turbo has to deal with other crud like carbon deposits that get blown off from time to time.

xsboost90

i would remove the plug and crank it over, compression should blow it out.

cpt_koolbeenz

Okay - Thanks guys!
I hope it goes well... I'll let you know tomorrow night

cpt_koolbeenz

Got it all back together and works fine!! Thanks guys!

R.B.

Take a small hose that will fit into the spark plug hole tape it to the end of your shop vac hose and use the small hose to suck up the piece through the spark plug hole.

-R.B.

W.Bruckner

Reviving this thread, dealing with the same situation with my 968. The plastic cap on injector 4 fell into intake port when lifting the fuel rail, I heard it falling inside. I pulled the intake manifold and, just my luck, it's the only cylinder with open intake valves. The injectors were pulled and cleaned 2 years ago so the plastic caps are not old and brittle, it hasn't broken into multiple pieces, I'd rather not leave it in there.

I want to remove the spark plug and fit a hose to try to vacuum the part, anybody can tell me what OD size hose will fit through the hole?

​​​​​ thanks!

Zirconocene

@W.Bruckner : The spark plugs look to have an M14 thread size, so anything smaller than 14mm OD should work.

Good luck

W.Bruckner

Thanks! I found a 1/2" OD hose that should work.

931guru

A borescope, coupled with a thin screwdriver with a dab of grease on the tip, has worked for me in the past.

walfreyydo

This, and some borescopes have a little claw/hook attachment on the end as well specifically for this reason

Or a tool like this

W.Bruckner

I'll start with the vacuum vinyl hose through the plug hole method first, I don't trust myself maneuvering metal tools in a blind spot near cylinder walls.

​​I will use the borescope camera to figure out where it's sitting, I assume the tilted angle the engine is mounted means it's at the lowest point on right side.

walfreyydo

You arent going to scratch the cylinder unless you are extremely rough. But whatever you are comfortable with. Dab of grease method is a good one to try

ElRicardo

You will want to get this part out. I had same issue in fall ‘22. I had the injectors rebuilt, which included new pintles (this is the name of those plastic caps). The #3 pintle dropped off and into the cylinder within 5 minutes of start up. It probably would have been OK if it had made it through the intake valve , but I believe it got stuck, pinning the valve open. Up came the piston and it struck the intake valve. So head off, new valve, etc.

W.Bruckner

Horror story. These caps are bound to fail sooner or later, but new ones? In my case, I suppose I wasn't careful enough while lifting the fuel rail, but I certainly wouldn't expect a newly installed cap to fall in while the engine is running. What holds these caps in place? Do they clip in place or just pressed fitted?

ElRicardo

There is a retainer ring that the pintle snaps into. Once they are on correctly they are on quite robustly. I have worked in the cars for years now and not seen one missing- in fact until this incident it never crossed my mind that they are just hanging there.