C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

clean injectors off the car

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Old Oct 4, 2006 | 06:12 AM
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Default clean injectors off the car

Other than taking the injectors to a "shop", what's the best way to clean the injectors while they are out of the engine..?

I thought of letting the "business" end sit in some carb cleaner, and have read the warnings against totally immersing the entire injector in any sort of cleaning agent, but is there a preferred method..?
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Old Oct 4, 2006 | 07:36 AM
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Bump..... Id love to hear some sugestions too
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Old Oct 4, 2006 | 08:24 AM
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It's worth paying to have it done right. You can cycle the injectors by applying voltage while spraying cleaner through them, but it won't do nearly as well as a proper cleaning.

Do a google search I'm sure you'll find lots of pages on DIY injector cleaning.
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Old Oct 4, 2006 | 09:10 AM
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With the "blue top Ford's" 24 lb. selling for $200.00 shipped from Summit Racing, if I had or suspected injector problems, I'd buy a new set. JMHO.
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Old Oct 4, 2006 | 09:27 AM
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Originally Posted by elefkow
With the "blue top Ford's" 24 lb. selling for $200.00 shipped from Summit Racing, if I had or suspected injector problems, I'd buy a new set. JMHO.
Happen to have that link or part number handy?
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Old Oct 4, 2006 | 10:16 AM
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As stated above, the correct way is to have them cleaned professionally. Typically they are checked electrically by ohming them out.

If yours are the RP Mulitechs, they should be 16.5, +/-, .3 according to the factory service spec. If they are outside this range, the coils are bad. That is the problem with the Multitech's, the gas cools them, which is obviously a solvent, so over time it breaks the windings down.

Finally, they are usually ultrasonically cleaned, and then flow tested. This service will usually be in the $100 - $125 range, so for a little more money, and you already have them out, why not replace them? Don't be like me, and pull it down to the intake......5 times, before you finally replace them
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Old Oct 4, 2006 | 10:38 AM
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If they are the original Multec crap just replace them now and save the aggravation and $$$$$$$
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Old Oct 4, 2006 | 12:19 PM
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Simple, Rich at Cruzin Performance.
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Old Oct 4, 2006 | 12:57 PM
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Default just had Ford's installed

I installed, or had installed for me, 8 new Ford injectors for my '91. I paid $495 - Summit is much cheaper! The car is running great. The advice of my mechanic, as well as other posts, if you're in there replace all of them. They go bad and you may have to go back in. All of my idle issues and lag were corrected. One bad injector. If you have the engine apart I would replace them.
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Old Oct 4, 2006 | 05:28 PM
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Originally Posted by Muffin
Simple, Rich at Cruzin Performance.
Here's the site for anyone interested:

www.cruzinperformance.com/fuelinj.html

He is not accepting any injectors for the time being, but at $12 each, it's better than $150 each (new) which is a quote from Autozone+Napa for a Camaro V6 injector (that's one, not a "set").

Summit will sell a set of 6 for the V6 for $85 (GM Perf Parts).......so I would say it pays to shop around a bit...whether it's your Corvette or kid's car.

Last edited by USCG; Oct 4, 2006 at 05:58 PM.
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