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2G Injector Cleaning?

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GSXSixteenG

15+ Year Contributor
1,558
12
Jun 29, 2007
Buffalo, New York
Will cleaning these out fix the problem of having one stuck open? When I previously had my car at the mechanics for a no start problem, he said one of the injectors was stuck open so I furnished him with the stockers and it started right up. So my question is, would cleaning them fix the "stuck open problem?" Also, how would I go about it, just clean/soak them with mineral spirits?
 
Thanks, I saw the second two articles but not the first one. Do you think this would resolve an injector being "stuck open" though?

Without knowing what is wrong with the injector, nothing short of completely replacing it with a brand new one is going to 'guarantee' the problem being fixed. Read the articles he was nice enough to find for you, and I don't mean skim, READ them, and you should have your answer or at least an idea of your available options depending on your budget, aptitude, and available tools/materials.
 
Yes, I did. I didn't find the first article when searching google. Which I said thanks for but it says how to clean them. Not exactly if it would fix a stuck open injector. It states that it would remove "gunk" inside the injector. It answered my question about soaking them. None of this article considers or talk about a case where an injector is supposedly stuck open. It is mainly a how to on cleaning them and the process.

2nd article is about flow bench testing which would be easier to buy a new one then to build one or send away to FIC.

3rd article, is the FIC website to send the injectors to them to be checked out. Which may be what I will be doing after I try the technique mentioned in article #1.

Maybe, there was something I missed that you saw apparently...
 
What moneypit is getting at, is that if the problem with the injector that is causing it to stick open isn't "gunk" then cleaning it out won't fix it.

If there's a mechanical or electrical problem with the injector, no amount of cleaning will do you any good.

If the injector is not physically damaged as a result of it's condition and the problem is only that it is clogged with "gunk" then there's a fair chance that it will return to normal once that is cleaned out of there.
 
What moneypit is getting at, is that if the problem with the injector that is causing it to stick open isn't "gunk" then cleaning it out won't fix it.

If there's a mechanical or electrical problem with the injector, no amount of cleaning will do you any good.

If the injector is not physically damaged as a result of it's condition and the problem is only that it is clogged with "gunk" then there's a fair chance that it will return to normal once that is cleaned out of there.

Thanks, that is mainly what I was getting at. Nothing really outlines whether "gunk" would make an injector stick open or whether it was is a electrical/mechanial problem. My only option and try cleaning them and see what happens.
 
And that's what the first article said. :D If you're not comfortable pulling the injectors out, you can try running seafoam though the gas system first. Just be careful with the rail spacers and seals if you pull the rail, they're not expensive, just a PITA to find when you need them NOW.

A cheap alternative to the various chemicals used to clean the injectors is to run E85 through them (out of the car). The high alcohol content will de-varnish them VERY well, just be aware that some people have reported problems with E85 and injector brands other than FIC. While all fuel injectors 'should' be alcohol safe, it seems some are more equal than others. Stick with plastic lines vs rubber and you should be fine running it just to clean/de-varnish them, and at ~$3 a gallon it's quite the bargain.
 
Well, you never said what injectors you had, but if they weren't too expensive then I would just replace them. Then later if you have any more problems you would have spares. That is merely another option than sending one off or trying this and trying that.
 
Well, you never said what injectors you had, but if they weren't too expensive then I would just replace them. Then later if you have any more problems you would have spares. That is merely another option than sending one off or trying this and trying that.

I'm having this problem with my FIC 750's. Currently running on stockers, the car wouldn't even start with the 750s in it. I'm going to try soaking them and see what happens. They only have like 3,000 miles then spun a bearing and they sat for about 2 years.
 
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