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

injector cleaners?

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Old Mar 22, 2006 | 03:28 PM
  #21  
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Originally Posted by CentralCoaster
A fuel rail hookup will be more concentrated than a 12oz bottle that you dillute in 10 gallons of fuel.

I've looked for em but haven't seen any. Maybe they consider consumers too stupid to use them without setting their cars on fire.

Not all injectors are prone to damage from cleaning. I think maybe just the Multec design is.
.......I AGREE, but still looking.........
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Old Mar 22, 2006 | 04:15 PM
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Originally Posted by skybolt31
Ecklers used to sell a hose and adapter with a 3M product that attached to the fuel rail. A friend of mine used it years ago and said that it worked great and he has since given me the hose and I bought a can of 3M cleaner on Ebay but haven't tried it yet.
3M still makes the kit (a Chrysler tech friend of mine owns one and likes it), but I don't believe you can order direct from 3M. You might need to locate an authorized distributor. Here is the link:

http://products3.3m.com/catalog/us/e...er/output_html
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Old Mar 22, 2006 | 04:44 PM
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Originally Posted by byebyeL98
3M still makes the kit (a Chrysler tech friend of mine owns one and likes it), but I don't believe you can order direct from 3M. You might need to locate an authorized distributor. Here is the link:

http://products3.3m.com/catalog/us/e...er/output_html
found similar on ebay......will look locally.......thanks all......
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Old Mar 22, 2006 | 05:24 PM
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One thing you need to remember, you need to block the return line and disable the fuel pump or most of it is going back into the tank.

Just a thought.
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Old Mar 22, 2006 | 05:34 PM
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Originally Posted by blown87
The BG prouduct is what we use here at our shop, the three part kit.

One part in the tank, one part in the fuel rail, one part in the throttle body.

It truly works.

Greg N
Cost for the service?
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Old Mar 22, 2006 | 06:42 PM
  #26  
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Originally Posted by 69mako
Cost for the service?
Are you wanting to know what we charge?

On most cars it is $102.00 drive out.
I am sure some shops are higer/lower.

Last edited by blown87; Mar 22, 2006 at 06:51 PM.
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Old Mar 22, 2006 | 06:58 PM
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Pull them out, send them to Rich at Cruzin Performance, a hundred bucks gets you cleaned and flow balanced set.
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Old Mar 22, 2006 | 11:06 PM
  #28  
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I like the Chevron Textron cleaner.....and it is not the cheapest stuff available.....but do not use it with the 89 to 91 GM Multec injectors. This stuff is sooo good that it tends to accelerate the shorting of the Multec injector coils. I learned this the hard way
SAM
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Old Mar 23, 2006 | 12:31 PM
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3M Port Fuel Injector Cleaner is available at Napa - about $20 per can if I remember correctly - so it ain't cheap. The rail hook up through Ecklers. I've used it on three GMs and didn't notice anything - good or bad. The can warns you that if any of the cleaner flows back into the tank, you'll ruin the fuel pump. Frankly, I think the only way to be sure is to remove and have them flow tested and then ultrasonically cleaned if necessary. Otherwise buy a cheap set of Accels or FMS.

Some enterprising members have made up their own kits for testing. You need a measured beaker and then some means of energizing each injector (actually, NAPA also sells a device that works off the car battery and will energize each injector for a milisecond - it's about 80 Bucks). Lift the rail - have you measuring device under an injector and energize it accordingly. If the capture device is wide enough, you can also observe the spray pattern. You can also leave everything attached and note the pressure drop on a gage. You need a gage with a good spread between the numbers as you're looking for fairly small differences in pressure drop between injectors. Replace any that are bad, though the cost of a single OEM makes a cheapo set more worthwhile - and by now you should realize that the cost and trouble of doing all of this makes replacement the more reasonable alternative.
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Old Mar 26, 2006 | 02:03 PM
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Originally Posted by SunCr
The can warns you that if any of the cleaner flows back into the tank, you'll ruin the fuel pump.
How do you keep the cleaner from flowing back into the pump? Unless there is a check valve, it would seem that you have to disconnect the line and plug it at some point.

Thanks
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Old Mar 27, 2006 | 08:30 AM
  #31  
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Originally Posted by SunCr
3M Port Fuel Injector Cleaner is available at Napa - about $20 per can if I remember correctly - so it ain't cheap. The rail hook up through Ecklers. I've used it on three GMs and didn't notice anything - good or bad. The can warns you that if any of the cleaner flows back into the tank, you'll ruin the fuel pump. Frankly, I think the only way to be sure is to remove and have them flow tested and then ultrasonically cleaned if necessary. Otherwise buy a cheap set of Accels or FMS.

Some enterprising members have made up their own kits for testing. You need a measured beaker and then some means of energizing each injector (actually, NAPA also sells a device that works off the car battery and will energize each injector for a milisecond - it's about 80 Bucks). Lift the rail - have you measuring device under an injector and energize it accordingly. If the capture device is wide enough, you can also observe the spray pattern. You can also leave everything attached and note the pressure drop on a gage. You need a gage with a good spread between the numbers as you're looking for fairly small differences in pressure drop between injectors. Replace any that are bad, though the cost of a single OEM makes a cheapo set more worthwhile - and by now you should realize that the cost and trouble of doing all of this makes replacement the more reasonable alternative.
thanks fro the reply. "shifting gears a bit", what is "seafoam" all about?..is it a decent product?..how is it "applied to the engine?...noticable results?
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Old Mar 27, 2006 | 08:42 AM
  #32  
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I am in the camp off taking them off and running them through an ultra-sonic cleaner powered up. Then you don't worry about anything going back into the tank, and you can find out what you really have. The description Suncr stated is very similar process that places like TPIS do to clean and aquire flow numbers. Again JMO

Last edited by mseven; Mar 27, 2006 at 08:47 AM.
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Old Mar 27, 2006 | 08:54 AM
  #33  
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SeaFoam is a product I've used and been quite happy with the results.
BUT,they recommend adding 1/3 to the tank-which you said you don't want to do, 1/3 through a vacumn line and 1/3 in the oil. I NEVER add it to the oil-that's the part that goes against my nature-I put 1/2 in tank and the other 1/2 through vaumn line-since you don't want to put anything in your tank-maybe you could do as I do accept only run 1/2 throught the vacum line-you asked, just responding.OH, and IF you decide to do it-you must keep the RPMs up, I run about 1500-2000 when I do it, and it will smoke like hell for a few minutes.

Last edited by rick lambert; Mar 27, 2006 at 08:56 AM.
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Old Mar 27, 2006 | 02:12 PM
  #34  
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Originally Posted by rick lambert
SeaFoam is a product I've used and been quite happy with the results.
BUT,they recommend adding 1/3 to the tank-which you said you don't want to do, 1/3 through a vacumn line and 1/3 in the oil. I NEVER add it to the oil-that's the part that goes against my nature-I put 1/2 in tank and the other 1/2 through vaumn line-since you don't want to put anything in your tank-maybe you could do as I do accept only run 1/2 throught the vacum line-you asked, just responding.OH, and IF you decide to do it-you must keep the RPMs up, I run about 1500-2000 when I do it, and it will smoke like hell for a few minutes.
thanks for the reply!...will add to tank. can i feed through pcv valve? i agree about not adding to the oil part! will it foul the plugs?...thanks again!
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Old Mar 27, 2006 | 05:38 PM
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I have one of the fuel injector cleaning kits, that utilizes the 3M aresol (screw-on) can. I bought it years ago from Summit and have used it with good results.

It's a relatively simple device with a screw-on nipple that connects to the 3M (or equivalent) cleaner can, goes to a small adjustable valve, then through a fuel pressure gauge, to a hose that connects with the schrader valve. The Fuel pump must be disabled (easily done by disconnecting the harness on Vettes).

The procedure is to pressurize the fuel rail with cleaner and maintain the pressure with the adjustable valve below the normal fuel pressure level. More than this (ie: 40psi) will send cleaner back to the tank. An assistant will start the vehicle and keep the engine running, while you monitor and adjust the pressure. The engine will cough and sputter as it is running on cleaner (a brew of toluene).

I'm not near my tools right now or I would give you the actual manufacturer's name and address. I do know that the parts are available through NAPA if you search some of their Fuel Injection Cleaning Kits (check kit BK 700-2090) and purchase only what you need. NAPA also sells the 3M aresol cleaner and a (higher priced) canister-type fuel injection cleaning tool BK 700-2123.

Last edited by DanZ51; Mar 27, 2006 at 05:41 PM.
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Old Mar 27, 2006 | 06:29 PM
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Yes, you can use the PVC, I normally use my Brake booster vac line,
does the same thing but it's easier. Remember to keep the RPMs up
around 1800. Also, other than smoking like crazy, I found once it temporarily misted the 02 sensor-so if you get an 02 code-don't worry, let it burn off and clear the code. Honestly if I told you all of what SeaFoam has done for me you'd swear I owned stock-wish I did. Good luck.
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Old Mar 27, 2006 | 07:01 PM
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Originally Posted by rick lambert
Yes, you can use the PVC, I normally use my Brake booster vac line,
does the same thing but it's easier. Remember to keep the RPMs up
around 1800. Also, other than smoking like crazy, I found once it temporarily misted the 02 sensor-so if you get an 02 code-don't worry, let it burn off and clear the code. Honestly if I told you all of what SeaFoam has done for me you'd swear I owned stock-wish I did. Good luck.
.......noticable difference 'eh?
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Old Mar 27, 2006 | 07:27 PM
  #38  
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Originally Posted by skybolt31
How do you keep the cleaner from flowing back into the pump? Unless there is a check valve, it would seem that you have to disconnect the line and plug it at some point.

Thanks
If your fuel rail is holding preassure after the car is turned off, it will not go into the fuel tank if you keep the preassure from the can below 40 PSI as the FP regulator and the checkvalve in the fuel pump is working properly if it holds preassure during test.
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