Fuel Injector Grommets
I have searched and can't find an answer to this. I just got my injectors back from Injector Rehab after being cleaned and flow tested and it looks like they sent the wrong lower primary grommets. I have attached a picture of the injector and grommets. The grommet on the right is what came off the injector when I pulled them to ship them. Can I use the ones Injector Rehab put on or do I need to get ones like it had?
https://cimg4.ibsrv.net/gimg/www.rx8...1e58755416.jpg |
Either will work. I would use the OEM ones if they aren't hard...
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Originally Posted by dannobre
(Post 4777141)
Either will work. I would use the OEM ones if they aren't hard...
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Originally Posted by Charles R. Hill
(Post 4777190)
The primary injectors have a deeper well in the iron in which they sit, so I would use the seal on the right in the photo. The yellow injectors use the smaller seal in the photo.
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Originally Posted by Charles R. Hill
(Post 4777260)
Actually (and I hate to argue with Dan, here), the small seal will not work as it will not keep the injector properly seated on the rail when installed. E-mail me your address as I may have a few extra seals laying around to send you.
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Originally Posted by Charles R. Hill
(Post 4777260)
Actually (and I hate to argue with Dan, here), the small seal will not work as it will not keep the injector properly seated on the rail when installed. E-mail me your address as I may have a few extra seals laying around to send you.
They do seal I have used them that way....not as well though...and as I said I would use the OEM ones too 😁 so no argument needed. To the OP....they are just a vac leak seal...there would be no fuel there unless they were leaking from the top at the fuel rail. It is more likely a bit of water 😁 |
Originally Posted by dannobre
(Post 4777263)
LOL..I don't mind as long as it's not just for the sake of arguing 😉
They do seal I have used them that way....not as well though...and as I said I would use the OEM ones too 😁 so no argument needed. To the OP....they are just a vac leak seal...there would be no fuel there unless they were leaking from the top at the fuel rail. It is more likely a bit of water 😁 |
Originally Posted by Charles R. Hill
(Post 4777361)
True enough, Dan. I have found quite a bit of dirt in that area of the irons during rebuilds...... :-)
Taking a closer look at the photo, I suppose the yellow seal might work but I would likely stack a pair on each injector in a pinch. In any event, I think I have a few red seals in a bag o' stuff in my "spare parts" box...... LOL |
LOL...you get what you pay for...
BHR uses proper coils and a good harness and stands behind it...the e-bay harnesses I have seen have been sub par. .... Bad coils are a very common reason for starting and running issues in this platform. Why do you think the first thing people say to do is replace your coils for everything 😎 |
Originally Posted by dannobre
(Post 4777439)
LOL...you get what you pay for...
BHR uses proper coils and a good harness and stands behind it...the e-bay harnesses I have seen have been sub par. .... Bad coils are a very common reason for starting and running issues in this platform. Why do you think the first thing people say to do is replace your coils for everything 😎 |
Originally Posted by Charles R. Hill
(Post 4777468)
Thx, Dan. It is also why my ignition system customers blame the system for any misfire CEL they see later on. LOL
I also revisited this thread to mention that I checked the "stack height" of the two seals when installed on the injector. What a surprise; you were correct that either one can be used. :-) I usually don't suggest things without having done them myself first. Keeps me out of trouble Having a bunch of parts in the garage helps too....I can go out and try stuff before I open my mouth if I don't know |
Originally Posted by Charles R. Hill
(Post 4777469)
Replied via e-mail before I saw this post; what exactly in the fuel system was replaced?
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Originally Posted by Charles R. Hill
(Post 4777583)
Correct. I suspect your issue (and mine, as well) may rise above the usual diagnoses and will get back to you as soon as I can about my PCM suspicions. Also note that running your RX-8 with a removed midpipe can also cause some issues as regard engine performance.
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Didn't you say in another thread that your engine has low compression?
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Originally Posted by redcivic
(Post 4777585)
Didn't you say in another thread that your engine has low compression?
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Originally Posted by Charles R. Hill
(Post 4777630)
Per our e-mail discussion; I will also follow up on my end. For everyone else, I suspect we will start to see issues like these which are difficult to diagnose due to failing PCMs, particularly injector drivers and ignition coil drivers. No hard proof, yet, but just a hunch ....... I hope Shadow and I end up finding out differently as I am sure neither of us wants to replace our PCMs.
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Originally Posted by ShadowGryphon
(Post 4777634)
Hey, if it is the PCM itll atleast give me an excuse to go with aftermarket engine management. But I will be checking tonight/tomorrow.
For an NA car...you won't get it to run any better on anything else ;) I think that the 8's wil get like the 7's. The wiring harnesses start to get brittle and buggy and then things go downhill from there. Some of the wiring on the stock harnesses is marginal when new...and it doesn't get better when you add a little corrosion and water :) At least be glad we don't have the horror story of a rats nest of Vac and boost hoses that run the FD turbos :) |
Originally Posted by dannobre
(Post 4777659)
For an NA car...you won't get it to run any better on anything else ;)
I think that the 8's wil get like the 7's. The wiring harnesses start to get brittle and buggy and then things go downhill from there. Some of the wiring on the stock harnesses is marginal when new...and it doesn't get better when you add a little corrosion and water :) At least be glad we don't have the horror story of a rats nest of Vac and boost hoses that run the FD turbos :) |
Needs to be programmed. You need the "as built" data from Mazda to do it. ( basically a page of #'s to enter into the correct places in the programming)
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Originally Posted by ShadowGryphon
(Post 4777613)
If you are replying to me then no. Maxda told me it was pushing compression through the radiator, rad cap blew off, and smelled like it was burning coolant. But through my own observations I have found all that to be wrong. There are no bubbles in my overflow, the radiator cap has never blown off on me, and me and 5 other people all agree that the exhaust does not smell like burning coolant. Besides, I never lose coolant
Originally Posted by ShadowGryphon
(Post 4775819)
I am fine with having low compression for right now. Once I sell the chevy 350 in my driveway I will rebuild the engine. Until then I want to eliminate any and all issues that could kill the rebuild. Hence why I ask so many questions about so many things. And you didnt really answer the question. Have the injectors serviced/flow tested/balanced for $25 each, or replace for $60 each?
Also, one of the reasons I'm thinking its not compression is because since I installed a new fuel pump, when it does finally decide to start, I can shut it off and it will restart hot within a few seconds. It was my understanding that low compression won't start that fast when hot. |
Originally Posted by redcivic
(Post 4777710)
I thought I had just read a thread you started where you had mentioned having low compression. 90psi at 250RPM from what you stated there.
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Originally Posted by redcivic
(Post 4777710)
I thought I had just read a thread you started where you had mentioned having low compression. 90psi at 250RPM from what you stated there.
And heres a video from 2 weeks ago with a hot start on a $10 fuel pump that had to be primed everytime I tried to start the car cold: |
Yeah I dunno man, that sounds like a lot of assuming. That engine sounds like toast to me. But I hope you figure it out, good luck.
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Originally Posted by redcivic
(Post 4777726)
Yeah I dunno man, that sounds like a lot of assuming. That engine sounds like toast to me. But I hope you figure it out, good luck.
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Ah, the exhaust was off...... Your methods of diagnosis are interesting that is for sure :)
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