Fuel Leak at Injector Top O-Ring

[Altoids94]

I have a fuel leak coming from the top on my Denso 550cc RX-7 injector. The model number is 195500-1370 and its a tan top. It is coming from the top o-ring on the injector where it goes into the fuel rail. I have changed the o-ring 3 times trying to get it to stop leaking and nothing is working. The stock dsm o-ring it too beefy and the rx-7 seems to not want to seal although it is the same size as the one before. Any ideas?

 

[RvlutionMtrsprt]

Check the fuel rail to make sure the injector boss doesn't have any nicks in it. Next, are you lubricating the o-rings prior to install? If not, you might be cutting the o-ring upon install and causing the leak. Those are the first 2 things I'd check.

 

[UCF201101]

Both injectors should be the same size. You indicated that the orings were the same size. I would put some lub on the orings before installation. When pulling the injectors out, carefully examine the orings to see if they are damaged...hope this helps

Daniel

 

[rubadubdub]

Also make sure that you are setting them in their flush. I had a similar problem in which one of the injectors would not sit right inside there and the fuel pressure would squirt fuel out.

 

[Icyu11725]

anyone have a guide on taking the injectors and fuel rail out? i have fuel sitting under neath my injecotrs and i cant find where its coming from. please help =/