Toyota Forum banner

Can the front fuel rail be separated from the back rail on the 1MZ-FE?

2.6K views 9 replies 4 participants last post by  IsaacB  
#1 ·
I have a problem #3 cylinder and I'd like to replace the injector - anyone ever replaced just front injectors without having to remove the intake plenum to get the rear rail off as well?

And I know its always nice to replace all injectors at once, I'll get there eventually, just need to know this first!


Sent from AutoGuide.com Free App
 
#2 ·
There probably is since there is what looks to be a bolt on the front rail right side, but I haven't done that, don't know whether or not it would actually work, and its probably not a great idea. I understand about convenience and time though.

If you do end up removing the plenum etc. you may want to just not put the rear plenum bolt back in. it's kind of a pain to get at. I removed mine and haven't noticed a difference.
 
#3 ·
Yes, the front and rear fuel injection rails are connected by a metal tube that can be disconnected. There's a banjo fitting on each end, so you should replace the metal seals.

BTW, cylinder #3 is the middle cylinder in the rear bank. Just so you know, and do the correct bank first.
 
  • Like
Reactions: numberforty1
#4 ·
Sorry, it's the #4 cylinder, not sure why I said #3. Didn't see anything about replacing seals, do you just mean the washers for the banjo bolts? Thanks though that's really helpful, can get that job done on the street then.

Isaac, when you refer to the rear plenum bolt, do you mean the two bolts on the top back of the plenum, that go through the two metal brackets that come up from the block? Neither of mine have been connected for about 7 years...the dealership stripped them, didn't replace them, and didn't tell me. Thanks Gault Toyota...:wtf:
 
#5 ·
Sorry, it's the #4 cylinder, not sure why I said #3. Didn't see anything about replacing seals, do you just mean the washers for the banjo bolts?
Yeah, washers. IIRC, they're copper. I've reused them in the past, but it's generally recommended to use new ones.
 
  • Like
Reactions: numberforty1
#7 ·
Yeah, miles. Original motor. I felt I could say I had never been "into" it, up until the head gaskets failed at 332k. The transmission was replaced under warranty at 59,600 miles. I've replaced a lot, but there's a lot of stuff that would commonly be replaced by now that has not been. Like the starter, alternator, fuel pump. Some things have been replaced more than once, like axles & radiator. The normal things I've lost count of how many times they've been replaced, like brakes, tires, batteries.
 
#9 ·
yup stuff last a good while..


but you need to sort out a water pump and timing kit for your own sake if they never been done and you're looking for most life/mileage


if you swap any injectors... get new injector seals too.... otherwise your old seal will prob just leak with the new injector