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Chris Davey
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Location:
sunny coast, qld
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October 2002
1jz - removing injectors? Thu, 23 September 2004 00:49 Go to next message
I have got the bolts off the backing plate for each set of injectors but the buggers won't come out? I have given them a bit of a squirt with WD40 and now they spin a little but still no movement outways Smile I am missing something here?
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Norbie
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Brisbane
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May 2002
Re: 1jz - removing injectors? Thu, 23 September 2004 01:08 Go to previous messageGo to next message
I have no exerience with side-feed injectors, but when removing top-feed injectors from my 18R-GEU and various M series engines, the injectors often required a fair amount of effort to yank 'em out. This would often destroy the o-rings but I always replace them anyway so it doesn't really matter.
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Chris Davey
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sunny coast, qld
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October 2002
Re: 1jz - removing injectors? Thu, 23 September 2004 01:21 Go to previous messageGo to next message
hmm, ok then. I think that is what I was trying to do. Maybe I am just too weak Smile

Will try again now.
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Chris Davey
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sunny coast, qld
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October 2002
Re: 1jz - removing injectors? Thu, 23 September 2004 03:11 Go to previous messageGo to next message
I did a search before starting this to see what I was up for and I was told

Quote:

In the last 2 weeks, I have removed and replaced the injectors in my 1JZ-GTE twice. The only things I removed were the accelerator and kickdown cables. Everything else was done with either my fingers or a ring spanner.
I didn't touch the IACV or loosen the inlet manifold.

Mind you, it helps to have *very* flexible fingers.

All in all, I think it took me 1h 45m to remove the 380cc injectors and install the 440cc ones.

By the way, the first 3 injectors are the easiest to pull out. I could remove and replace those in 30 minutes now I reckon. It's the back 3 that are the tough ones.


I tried to do this and I just can't see how it is possible! I couldn't even get the last 2 10mm bolts off because they hit the inlet manifold. To even get anywhere near the 2nd last one, I had to disconnect a number of the pipes in the area. So I then took the 3 12mm bolts off that hold the rail on. Disconnected the Fuel lines in and out. I could move it but nowhere near enough. So then I decided to loosen the inlet manifold a bit and see if I could jiggle it out. This didn't work. So I then decided to loosen the inlet manifold a lot and it was going fine but there were some wires in the way going to CAS & coil packs. In order to get these wires off I had to take the timing belt cover off first. So now there was a bit of slack in the wires I could fit the rail underneath it and after a bit of jiggling I finally got it out.

Now that I have it out, I still can't get the bastard things out of there! What the hell is going on?? It has taken me at least two hours already and I still haven't got the things out!
/rant

[Updated on: Thu, 23 September 2004 03:12]

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82MKII
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Location:
Perth
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July 2003
Re: 1jz - removing injectors? Thu, 23 September 2004 05:11 Go to previous messageGo to next message
Yes - I pulled mine out about 1 month ago & it was a bit of a bitch.
I actually left a couple of the 10mm bolts in place (the centre ones) & rotated the backing plate out of the way of the injector.
To get them to move I *gently* levered them up by placing a screwdriver under the connector & pushing up. They eventually moved. I actually shortened a few of the 10mm bolts to make them easier to get back in later.
I did have to remove the ISCV, but not the inlet manifold.
Hope this helps.

Peter
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stark
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Location:
Perth
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August 2004
Re: 1jz - removing injectors? Thu, 23 September 2004 07:00 Go to previous messageGo to next message
If your sick of dealing with side feed injectors;

http://www.importbitz.com/ in brisbane have a greddy fuel rail for the TT 1jzgte which converts it top feed..

Quite apart from the fact that top feed injectors are easier to work with there also much cheaper and easier to find in large capacity...

Toyota actually changed to top feed injectors on the new VVTi 1jzgte
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Chris Davey
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sunny coast, qld
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October 2002
Re: 1jz - removing injectors? Thu, 23 September 2004 09:31 Go to previous messageGo to next message
thanks for the info. 82MkII.

That would be a good idea Stark except I just bought some 550cc side feed injectors and I think they will be supporting enough fuel for me for quite a while to come Smile
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mrshin
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Montrose, VIC
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May 2002
 
Re: 1jz - removing injectors? Thu, 23 September 2004 12:56 Go to previous messageGo to next message
They're buggers of things, if they're being difficult, pull the top half off the manifold. They need to be pulled firmly, but carefully. They will be stiff, but with the right touch they'll come out. Good luck Evil or Very Mad
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Manny
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May 2002
Re: 1jz - removing injectors? Thu, 23 September 2004 13:12 Go to previous messageGo to next message
Chris
I've done injectors half a dozen times on mine and other Soarers and it's pretty straight forward to do without removing the manifold.
Just use a large dull flat blade screwdriver to lever the injector against the rail if the o-rings are locking them in.
There are apparently differences in the position of the loom that runs through the middle of the intake plenum which affects injector removal - some are apparently easier than others as far as clearance is concerned. Simon's experience that you quote was on a later 1JZ-GTE engine which is apparently easier to do with more clearance.
For me though, it's always been a case of removing the throttle body, throttle cable bracket assembly, ICSV valve and disconnecting all vac lines and electrical plugs to the cam angle sensors etc in between the plennum and cam cover. This makes all the injecors relatively accesible. Most important step in R&R sidefeed injectors in a swimmer rail, is accounting for ALL the o-rings and fishing out the lower o-ring which is usually flattened on the botton of the fuel rail and ensuring the new lower o-ring doesn't fsll off during insertion causing misfires from blocking/diverting the injector spray pattern.
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Chris Davey
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Location:
sunny coast, qld
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October 2002
Re: 1jz - removing injectors? Thu, 23 September 2004 22:36 Go to previous messageGo to next message
Thanks Manny.

As a newby to this - how many O rings does each injector have? I have seen the ones on the bottom of the fuel rail where each injectors goes in. Is there others? These all seemed to be in good condition.
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Manny
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Sydney
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May 2002
Re: 1jz - removing injectors? Fri, 24 September 2004 10:58 Go to previous messageGo to next message
Chris
There are actually 2 o-rings and 2 absorbers/insulators per injector but they all get commonly referred to as o-rings.
There's an absorber/insulator on the top and bottom of the injector and a pair of o-rings in the middle section that "swims" in the fuel rail.
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acmtt
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Location:
Melbourne
Registered:
March 2003
Re: 1jz - removing injectors? Sat, 25 September 2004 12:29 Go to previous message
A touch of vaseline to the rubbers helps to keep the bottom O ring on while inserting. Also aids in not crimping them. They can be difficult to remove, just use a long screw driver as Manny said and persist.
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