Leaking injector o-rings

TYTILIDIE

TYTILIDIE

METH HEAD
I did a pressure test of the intake system today and I found that all of my lower injector o-rings were leaking. I went and pulled them out and noticed they were smaller than the ones on the uppers. So I got new o-rings, the fatter ones and installed them. Four of the, are still leaking a little bit. Is there anything I can do about this? Anyone know any tricks?
 
Sy-1177

Sy-1177

Turbo Inside
Re: Leaking injector o-rings

TYTILIDIE said:
I did a pressure test of the intake system today and I found that all of my lower injector o-rings were leaking. I went and pulled them out and noticed they were smaller than the ones on the uppers. So I got new o-rings, the fatter ones and installed them. Four of the, are still leaking a little bit. Is there anything I can do about this? Anyone know any tricks?
Click to expand...
You lubed them with vaseline before installing them right? They are the same O-ring on the top and bottom of the injector though.
 
ls1monza

ls1monza

Got me UNDER PRESSURE!!
Re: Leaking injector o-rings

Can you move all of the connectors side to side? If they feel tight you may be binding on one preventing the rail from sitting evenly . Sometimes it helps to slowly and methodically tighten in an "X" pattern while wiggling them.
 
TYTILIDIE

TYTILIDIE

METH HEAD
Re: Leaking injector o-rings

Sy-1177 said:
You lubed them with vaseline before installing them right? They are the same O-ring on the top and bottom of the injector though.
Click to expand...

Actually I used a light dab of oil. Used vasoline back in the day and was told not too last year when I was putting all this together.
 
TYTILIDIE

TYTILIDIE

METH HEAD
Re: Leaking injector o-rings

ls1monza said:
Can you move all of the connectors side to side? If they feel tight you may be binding on one preventing the rail from sitting evenly . Sometimes it helps to slowly and methodically tighten in an "X" pattern while wiggling them.
Click to expand...

Definitely not the issue. Rail is even.
 
Big Mike

Big Mike

New member
Re: Leaking injector o-rings

This may sound weird but, Do you still have the charcoal canister on your truck? Look for broken or bad vent lines to gas tank that could be causing the gas/fuel smell.
 
ls1monza

ls1monza

Got me UNDER PRESSURE!!
Re: Leaking injector o-rings

I believe all EV1 injectors use the same o-rings. They're most likely in stock at your local auto parts store. I'd go buy a new set if it were me.
 
TYTILIDIE

TYTILIDIE

METH HEAD
Re: Leaking injector o-rings

Big Mike said:
This may sound weird but, Do you still have the charcoal canister on your truck? Look for broken or bad vent lines to gas tank that could be causing the gas/fuel smell.
Click to expand...

That was one of the first things to go on my TY when I bought it back in 03. These o-rings are new.
 
JSM

JSM

Active member
Re: Leaking injector o-rings

Intake itself probably doesn't have a smooth surface inside the injector bores due to blasting, paint, grime, whatever. My :2cents:
 
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