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Injector cups

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Old 09-13-2011, 12:45 PM
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Injector cups

Alright I'm going to replace the one injector cup that had a water/fuel mix spraying out when I was purging the cylinders after doing all of them hoping this is my problem with fuel still being in the coolant. If your just doing one( the back passenger one) is it ok to just remove the one injector and glow plug and follow the same procedure?
 
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Old 09-13-2011, 01:39 PM
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Did you say it was already replaced with new in the other thread ?
 
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Old 09-13-2011, 01:42 PM
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You can pull just one injector . Are you interested in pressurizing the system to verify the leak ?..
 
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Old 09-13-2011, 01:44 PM
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Ya it was. And after I put the injectors back in and was cranking it to purge the cylinders the back passenger one was the only one spraying stuff out. I did it quit a few times to clear it but it just stayed consistent.
 
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Old 09-13-2011, 01:45 PM
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How is that done? I would be interested.
 
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Old 09-13-2011, 01:52 PM
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Pull the injector in the suspect cup . You may be able to rent a cooling system pressure test from an auto part store .. If you have a bad cup , you will be able to see coolant seeping from it ...
 
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Old 09-13-2011, 01:54 PM
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Originally Posted by j250hd
Ya it was. And after I put the injectors back in and was cranking it to purge the cylinders the back passenger one was the only one spraying stuff out. I did it quit a few times to clear it but it just stayed consistent.
Was it spraying from the glow plug hole?..
 
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Old 09-13-2011, 02:07 PM
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Ya it was the glowplug hole.
 
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Old 09-13-2011, 03:03 PM
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A cracked cup won't cause any coolant to be in the cylinder .

That being the last in line most likely had more in it than the rest ...
 
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Old 09-13-2011, 03:14 PM
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If it's not seated/ sealed properly, would that cause the problem? I cranked on it numerous times and for 15-20 seconds at a time. And it was always the same amount. Could there be anything else causing fuel to get in the coolant besides cups?
 
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Old 09-13-2011, 03:16 PM
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Or the water getting into the cylinder? I checked the oil and it is clean so I wouldn't think it was a head gasket.
 
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Old 09-13-2011, 05:18 PM
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The only other ways for water to be in the cylinder are head gasket or a crack in the cylinder . If you had a crack in the cyl wall , there would have been water blowing out of the degass bottle from the pressure . Head gasket usually makes a lot of steam in the morning at start up , or if its really bad ,the motor will hydro lock. You can also do a test called a cylinder leak down .. It will tell you where anything is leaking

Leak-down tester - Wikipedia, the free encyclopedia
 
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Old 09-13-2011, 05:20 PM
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Originally Posted by j250hd
Or the water getting into the cylinder? I checked the oil and it is clean so I wouldn't think it was a head gasket.
A bad head gasket doesn't always leak into the oil.. most times it leaks into the cylinder ...

try getting a cooling system tester , see if it holds pressure first . Then if not , look for the leak ...
 
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Old 09-14-2011, 06:18 AM
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Need more info.
If the sleeve had been previously replaced and you now see coolant spit out the cylinder, then that sleeve was not re-installed propely and needs to be done again.
If that sleeve was not previously replaced, I don't think it's your problem.
 
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Old 09-14-2011, 08:51 AM
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I have just replaced all of them with brand new sleeves.
 


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