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Location: sunny coast, qld
Registered: October 2002
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1jz - removing injectors?
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Thu, 23 September 2004 00:49
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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 I am missing something here?
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Location: Brisbane
Registered: May 2002
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Re: 1jz - removing injectors?
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Thu, 23 September 2004 01:08
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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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Location: sunny coast, qld
Registered: October 2002
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Re: 1jz - removing injectors?
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Thu, 23 September 2004 01:21
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hmm, ok then. I think that is what I was trying to do. Maybe I am just too weak
Will try again now.
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Location: sunny coast, qld
Registered: October 2002
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Location: Perth
Registered: July 2003
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Re: 1jz - removing injectors?
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Thu, 23 September 2004 05:11
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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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Location: Perth
Registered: August 2004
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Re: 1jz - removing injectors?
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Thu, 23 September 2004 07:00
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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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Location: sunny coast, qld
Registered: October 2002
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Re: 1jz - removing injectors?
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Thu, 23 September 2004 09:31
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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
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Location: Montrose, VIC
Registered: May 2002
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Re: 1jz - removing injectors?
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Thu, 23 September 2004 12:56
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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
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Location: Sydney
Registered: May 2002
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Re: 1jz - removing injectors?
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Thu, 23 September 2004 13:12
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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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Location: sunny coast, qld
Registered: October 2002
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Re: 1jz - removing injectors?
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Thu, 23 September 2004 22:36
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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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Location: Sydney
Registered: May 2002
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Re: 1jz - removing injectors?
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Fri, 24 September 2004 10:58
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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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Location: Melbourne
Registered: March 2003
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Re: 1jz - removing injectors?
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Sat, 25 September 2004 12:29
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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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