Plastic Injector Piece In Engine -- What to DO?
08-16-2003, 10:49 PM
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Plastic Injector Piece In Engine -- What to DO?
When removing the number 2 fuel injector (one closest to front of car) the plastic end piece broke in 3 pieces and one small piece (about the size of a 1 mm nut) fell into the injector hole. I tried to vacuum it out while tapping the starter to no avail. Even took out the spark plug to see if I could get any airflow to suck it out.
I'm pretty sure it will not hurt the valves being that the piece is plastic (small and brittle at that). My main concern is when it comes out it may go into the turbo?? Depending on the size of it when it comes out it may get stuck between a spline and the side of the turbo?? I'm not sure what the clearance is inside the hot side of the turbo. The turbo is going out anyway (makes excessive spooling noise and has some play in the shaft). Maybe it will just vaporize, melt, or come out in miniscule pices. I looked in the hole and didn't see it... So I think by now it is in the cylinder.
What are your opinions on what I should do and worst case scenarios the piece could produce?
Thanks
I'm pretty sure it will not hurt the valves being that the piece is plastic (small and brittle at that). My main concern is when it comes out it may go into the turbo?? Depending on the size of it when it comes out it may get stuck between a spline and the side of the turbo?? I'm not sure what the clearance is inside the hot side of the turbo. The turbo is going out anyway (makes excessive spooling noise and has some play in the shaft). Maybe it will just vaporize, melt, or come out in miniscule pices. I looked in the hole and didn't see it... So I think by now it is in the cylinder.
What are your opinions on what I should do and worst case scenarios the piece could produce?
Thanks
08-16-2003, 11:01 PM
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I bought four sets of injector seals at my local friendly NAPA a while back, cost like 4 bucks a set. I am getting that 924, was wondering if you got my payment and if you had a chance to send out that water pump. Anyway thanks again!
08-16-2003, 11:02 PM
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Oh yeah, my friend is getting a '78 924 that runs, but needs a fuel tank. If your parts car has one, let me know how much you want for it and I may take it off your hands.
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08-17-2003, 02:23 AM
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You'll probley blow it out the exhaust on the first stroke. If it I was mine and I was really worried, I would plug the injector hole back up and put a shop-vac on the spark plug hole using some kind of rubber piece as a gasket to seal it up. If it is still there, that should suck it up.
08-17-2003, 02:26 AM
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Originally posted by tod84944
You'll probley blow it out the exhaust on the first stroke. If it I was mine and I was really worried, I would plug the injector hole back up and put a shop-vac on the spark plug hole using some kind of rubber piece as a gasket to seal it up. If it is still there, that should suck it up.
You'll probley blow it out the exhaust on the first stroke. If it I was mine and I was really worried, I would plug the injector hole back up and put a shop-vac on the spark plug hole using some kind of rubber piece as a gasket to seal it up. If it is still there, that should suck it up.
Does everyone think it is safe to start her up? Any ideas about the turbo?
Thanks
08-17-2003, 02:32 AM
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It is probley already gone. It will NOT burn up though. Think about it. That cap is in the cylinder ALL of the time. But being as small as you say it is, I think it will go out the exhaust stroke. The tolerace on the turbo, should keep it from getting lodged in there anywhere. I'm not a pro wrench. Surely there is one in the house tonight.
08-17-2003, 02:35 AM
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Yeah, I really don't think a little peice of plastic will hurt a turbo, I mean it's designed to withstand 1200 degrees, it should be fine.
08-17-2003, 06:22 AM
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About hurting the turbo, that would depend on the speed at which that piece will hit it. Considering that it will be leaving the engine during the first few revolutions of the engine, the turbo should barely be spinning. It won't "get stuck" somewhere, all the components get too hot for that.
The only real possibility for "damage" is if the exhaust valve catches it between itself, and it's seat. It's not too likely IMO, if the piece is small enough.
Anyway, if this were my own car, I wouldn't worry about it. If you want to be ****, you can always pull the head. If you're worried but that's too much work, you can put the engine on tdc for that cylinder (by hand), stick a small hose attached to a vacuum through the spark plug hole and get it out. Keep in mind that the engine sits at an angle, so it'll probably be at the "bottom" of the cylinder, or on it's "side" depending on how you want to think about this. Anyway, good luck.
Ahmet
The only real possibility for "damage" is if the exhaust valve catches it between itself, and it's seat. It's not too likely IMO, if the piece is small enough.
Anyway, if this were my own car, I wouldn't worry about it. If you want to be ****, you can always pull the head. If you're worried but that's too much work, you can put the engine on tdc for that cylinder (by hand), stick a small hose attached to a vacuum through the spark plug hole and get it out. Keep in mind that the engine sits at an angle, so it'll probably be at the "bottom" of the cylinder, or on it's "side" depending on how you want to think about this. Anyway, good luck.
Ahmet