Q: My buddy has a Subaru Forester that I have replaced the fuel injector o-rings on 3 times now and it continues to blow the rings

asked by on

My buddy replaced his head gasket, timing belt, radiator, plugs, and wires last weekend after it was all back together his injectors on the drivers side blew the o rings on the top of the injector he & his buddy who is a mechanic from out of town went to oreillys and bought felpro o rings said to be oem they put them on all injectors because he was worried that the other side would blow next about 2 days later they blew again so I replaced them for him this time because his buddy who is a mechanic went home out of town about a day after I replaced them the opposite side blew so I replaced those & those lasted a day now they have blown again I have checked each time I had done them that they are seating correctly in the fuelrail and are even I tighten them down a little bit on each side so that the pressure is evenly distributed as intighten then to insure they correctly seat I have noticed though that the felpro orings I have bought that say they are "oem"are tad thicker then the stock
My car has a manual transmission.

Are you using any type of lubricant while installing the injectors into the rail? If you are installing them dry, they may be binding and not seating correctly. A silicone spray lubricant would work best in this situation. Only use OEM quality o-rings on these vehicles when replacing seals as the aftermarket doesn’t always get it right. The thicker rings may be keeping the injectors from seating properly. Consider hiring an experienced technician, like one from YourMechanic, to come out and diagnose your fuel injector o-rings.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. My buddy has a Subaru Forester that I have replaced the fuel injector o-rings on 3 times now and it continues to blow the rings

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Audi A4 B8 chasis 2.0 tfsi Running rich

There are just a few things that will make your car run rich, you have already replaced the MAF, so that leaves the Coolant temp sensor,(CTS) the Throttle position sensor(TPS) and the fuel pressure. The temp sensor and the throttle...

Q: Check engine Light appears

Hello. The P0440 code you are getting is for an EVAP system problem. This code is generic so the system needs to be checked. Most of the time it is because of a system leak such as a fuel cap...

Q: hi tim, car leaking antifreeze when it get warm up and the mechanics cant tell from wear. it makes a stream.

Hi Kelley. In most cases when coolant leaks while you're driving, it's being forced out either of a coolant line with a tiny hole or a connection, due to pressure building up inside the coolant system. Most professional mechanics would...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...