2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

denso injectors?

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Old Dec 7, 2010 | 09:07 PM
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denso injectors?

a little confused how many o rings should there be per fuel injector. i bought two seperate pair, one pair came with only 2 o rings (so they can seat in the fuel rail) and the other came with 4 2 the same as the other injectors and it came with two larger green o rings and im not sure where they go..? or if the green o rings are just for a different setup..any help appreciated
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Old Dec 7, 2010 | 09:35 PM
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From: the dalles
there should be a fatter one on the bottom and at the top there should be a skinny smaller one.
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Old Dec 7, 2010 | 09:54 PM
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Are you talking about o-rings or rubber grommets? You should have o-rings at the very top, and then upper and lower grommets. Check here at the bottom: http://www.mazdatrix.com/c-6.htm.
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Old Dec 8, 2010 | 08:41 AM
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From: cold
post a pic of these injectors you bought
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Old Dec 8, 2010 | 02:31 PM
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I'm talking about o rings I have the gromets for sure I'll post pics later today
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Old Dec 8, 2010 | 05:56 PM
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denso injectors?-pict2800.jpg

i think i have everything i need.
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Old Dec 8, 2010 | 08:23 PM
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From: https://www2.mazda.com/en/100th/
Originally Posted by alex91n/a
Attachment 413009

i think i have everything i need.
that looks right
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Old Dec 8, 2010 | 09:57 PM
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Looks good to me.
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Old Dec 9, 2010 | 02:38 AM
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ok thanks guys
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Old Dec 9, 2010 | 09:33 AM
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you confused people by saying 2/4 per injector. there's only 1 o-ring per injector on the standard setup. or 3 if you count the gromments, none of which made sense in your post at all.
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Old Dec 9, 2010 | 11:10 AM
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The green o-rings he mentioned may be larger (14mm?) for American-style rails.
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Old Dec 9, 2010 | 11:19 AM
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yea the picture posted is correct..
The grommet on the bottom is referred to as a Denso Donut.
The only O-ring is the one at the top, and if it came with bigger ones they are for a 14mm rail..
Standard is 2mmx8mm (11mm rails) and bigger is a 2-203 (14mm rails)

Last edited by FullFunctionEng; Dec 9, 2010 at 11:23 AM.
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Old Dec 9, 2010 | 12:52 PM
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Originally Posted by Karack
you confused people by saying 2/4 per injector. there's only 1 o-ring per injector on the standard setup. or 3 if you count the gromments, none of which made sense in your post at all.
read again i didnt say 2/4 per injector in my post, i clearly said one pair of injectors came with two o rings, and the second pair came with 4 o rings...
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