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86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

Fuel leak

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Old 09-24-2015 | 05:52 PM
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93RedKrawler's Avatar
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Fuel leak




So I noticed a fuel leak on one of these sensor things but am not sure what there called .
Old 09-24-2015 | 06:28 PM
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Those things are the fuel injectors.
Old 09-24-2015 | 06:44 PM
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There is an o-ring at the top of the fuel injector (where it goes into the rail); yours is leaking. Since you've got it disassembled this far, get the whole set (oring, spacer, seat -- these aren't standard names, but the set is about $5/injector). Your pintle caps look okay from here, but it's hard to tell. The crush washers you need are only available from the dealer, but they're cheaper than dirt.

And for gosh sake, clean them up before you post a picture!

Old 09-24-2015 | 07:02 PM
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Originally Posted by scope103
There is an o-ring at the top of the fuel injector (where it goes into the rail); yours is leaking. Since you've got it disassembled this far, get the whole set (oring, spacer, seat -- these aren't standard names, but the set is about $5/injector). Your pintle caps look okay from here, but it's hard to tell. The crush washers you need are only available from the dealer, but they're cheaper than dirt.

And for gosh sake, clean them up before you post a picture!

Haha these aren't mine this is just the picture I found on The internet. So I can replace the seals I don't have to buy all new injectors??
Old 09-24-2015 | 09:13 PM
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Well, I don't know. But the most likely place for a leak is at the oring on top. When you install it, lubricate it with gasoline (okay, I use oil, but the FSM recommends gasoline) so that you don't cut the oring on installation.
Old 09-25-2015 | 05:11 AM
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I would not do this!

But some people say ( I have no experience with this) you could Anneal a Copper Washer. I might do it if i was not able to get a new one. But when playing whit high pressure fuel.. I would not cheapen my self to death. But thanks for your post, I forgot to order my new ones.

[YOUTUBE]
[/YOUTUBE]
Old 09-25-2015 | 05:44 AM
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Crush washer part numbers






Crush washer part numbers the last time I got them
Old 09-25-2015 | 11:49 AM
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Originally Posted by DemonRunner

Crush washer part numbers the last time I got them
Thanks I forgot about that and just ran over to the dealer and order new ones. and added the part number to my FSM page.
Old 09-25-2015 | 02:41 PM
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Don't forget that there are three different sizes of washers (CSI, FPD, and the rest)
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