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Old 27 Feb 2010, 03:00 pm
Greg
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Default 92 Accord injector woes. DIY fix?

Car suddenly running lumpy! After an afternoon's troubleshooting, I've
determined that I've got a stuck injector. Applying 4v to the other
injector units produces an audible 'click' but does nothing for the dead
one. Resistance is the normal at ~2 ohms, so it's not an open coil.
I'm assuming (?) that a bit of dirt has worked its way into the
mechanism, and that the piston / valve mechanism is jammed. Are the
injector units remotely user serviceable?

If buying an injector, or set, from a junkyard, is there anything
specific to look for?

Thanks
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Old 27 Feb 2010, 04:07 pm
Greg
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Default Re: 92 Accord injector woes. DIY fix?

Greg wrote:
> Car suddenly running lumpy! After an afternoon's troubleshooting, I've
> determined that I've got a stuck injector. Applying 4v to the other
> injector units produces an audible 'click' but does nothing for the dead
> one. Resistance is the normal at ~2 ohms, so it's not an open coil. I'm
> assuming (?) that a bit of dirt has worked its way into the mechanism,
> and that the piston / valve mechanism is jammed. Are the injector units
> remotely user serviceable?
>
> If buying an injector, or set, from a junkyard, is there anything
> specific to look for?
>
> Thanks


Also, will I need to install new o-rings on all the injectors when I
pull the rail?

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Old 28 Feb 2010, 07:10 am
Tegger
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Default Re: 92 Accord injector woes. DIY fix?

Greg <nospam@null.net> wrote in newsGfin.21940$Dv7.14247@newsfe17.iad:

> Car suddenly running lumpy! After an afternoon's troubleshooting, I've
> determined that I've got a stuck injector. Applying 4v to the other
> injector units produces an audible 'click' but does nothing for the dead
> one. Resistance is the normal at ~2 ohms, so it's not an open coil.
> I'm assuming (?) that a bit of dirt has worked its way into the
> mechanism, and that the piston / valve mechanism is jammed. Are the
> injector units remotely user serviceable?




About the only thing you can do is carefully push the pintle in to see if
that will un-stick it. Which you ought to do before condemning the
injector! Injectors sometimes come from the factory in a stuck condition,
and the tech needs to unstick it as I describe.

Plus you can pull the basket filter and backflush the filter with throttle
body cleaner.


>
> If buying an injector, or set, from a junkyard, is there anything
> specific to look for?
>



Replace as a set. All the "new" ones should come from the same car.

Also make 100% certain you pull the injectors from the exact same year and
model as yours. Injectors from various models may look identical outside,
but may be mechanically and electrically different inside.

I believe the same year Prelude has the same injectors as your Accord.

Keihin injectors of this vintage have a small rectangular pad on one side
of the black top. This pad has four circles with characters in them, some
of them Japanese. I can't remember if the characters are different from one
injector type to another , but if they are, it will give you a clue as to
their nature. Bring a toothbrush to help make the characters more readable.

And yes, you need new O-rings. Replacing the rubber bumpers top and bottom
is a good idea as well.

--
Tegger

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/
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Old 01 Mar 2010, 12:37 pm
Greg
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Default Re: 92 Accord injector woes. DIY fix?

Tegger wrote:

>
> Keihin injectors of this vintage have a small rectangular pad on one side
> of the black top. This pad has four circles with characters in them, some
> of them Japanese. I can't remember if the characters are different from one
> injector type to another , but if they are, it will give you a clue as to
> their nature. Bring a toothbrush to help make the characters more readable.
>
> And yes, you need new O-rings. Replacing the rubber bumpers top and bottom
> is a good idea as well.



After pulling the injector, I fiddled with it a bit now it's clicking
nicely when juiced. The old rail/injector o-rings were surprisingly dry
and brittle. I'm off to pick up new ones and hope to be driving this
afternoon.

Thanks again.
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Old 01 Mar 2010, 06:16 pm
Tegger
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Default Re: 92 Accord injector woes. DIY fix?

Greg <nospam@null.net> wrote in news:iNTin.37452$1n5.3658@newsfe04.iad:

> Tegger wrote:
>
>>
>> Keihin injectors of this vintage have a small rectangular pad on one
>> side of the black top. This pad has four circles with characters in
>> them, some of them Japanese. I can't remember if the characters are
>> different from one injector type to another , but if they are, it
>> will give you a clue as to their nature. Bring a toothbrush to help
>> make the characters more readable.
>>
>> And yes, you need new O-rings. Replacing the rubber bumpers top and
>> bottom is a good idea as well.

>
>
> After pulling the injector, I fiddled with it a bit now it's clicking
> nicely when juiced.




Then it was probably just a bit sticky from sitting a while.

A bit of driving will erase whatever deposits there are inside the pintle
area and it'll surely be just fine after that.



> The old rail/injector o-rings were surprisingly
> dry and brittle. I'm off to pick up new ones and hope to be driving
> this afternoon.
>



Dry and brittle is BAD news. That's one reason people get fuel leaks. I
hope you use OEM O-rings. They fit best and last longest.

You can use a thin skim of motor oil to help ease the new rings into the
fuel rail.


--
Tegger

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/
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