85 Toyota Celica, Replaced Fuel injectors, Now leaking


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85 Toyota Celica, Replaced Fuel injectors, Now leaking at fuel rail

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Auto Repair Home>> Automotive Repair>> Engine Troubleshooting

JJT211
New User

Jan 23, 2010, 7:58 AM

Post #1 of 3 (2434 views)

85 Toyota Celica, Replaced Fuel injectors, Now leaking at fuel rail	Sign In

I replaced my fuel injectors....I tried to start my car and it wont cuz the fuel pressure wont build and fuel is leaking from my fuel injector by the feed end side by the fuel rail. Im gonna try to replace the O-ring....But if that isnt it...which i dont think it is, its a brand new injecotr and oring....then is the next step to look at my fuel rail?

Can anyone think of anything ive missed?

JJT211
New User

Jan 23, 2010, 5:38 PM

Post #2 of 3 (2425 views)

Re: 85 Toyota Celica, Replaced Fuel injectors, Now leaking at fuel rail	Sign In

Ok.....I tried a new O-ring, swapping injectors and also got a used fuel rail (came with a fuel pressure regulator too)

Same problem leaking from that same injector.....

Only thing i can think of is maybe too much pressure???? or something.....Im stumped

Sidom
Veteran / Moderator
Sidom profile image

Jan 23, 2010, 7:53 PM

Post #3 of 3 (2422 views)

Re: 85 Toyota Celica, Replaced Fuel injectors, Now leaking at fuel rail	Sign In

Was it leaking before? How many injectors did you replace? How many are leaking?

I don't remember this exact system but most injectors have a top & bottom O ring. It really sounds like you may have nicked an O ring on the installation. You need to see exactly where the leak is coming from, completely dry the injectors & have a helper turn the key on and CAREFULLY look down there to see where it's leaking from. Due to the pressure you'll have to look quick and be careful of the fuel spraying..... safety glasses would be a good thing

If just one is leaking, it's possible to have a bad injector. To confirm this just swap the injector only, no O rings with another non leaking injector, if the leak moves its a bad injector, if it stays then its an O ring.

Either the O ring got damaged or it's the wrong one. It's possible for the rail to leak but it would have to be in pretty bad shape to have been sealing before & now leaking just by changing the injectors.............

A little lube helps, carb clean, gas, silicone spray on the install. If the O rings were dry then it's very easy to damage them

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