Fuel Injector Cleaner
Thread Starter
Racer
Joined: Jun 2002
Posts: 411
Likes: 0
From: Palm City FL
Fuel Injector Cleaner
I was wondering if you guys use fuel injection cleaner in the fuel tank.
I've heard that your supposed to use it with every oil change. I think in the last four years, I've used it twice.
Does it make a difference? What do you do?
I've heard that your supposed to use it with every oil change. I think in the last four years, I've used it twice.
Does it make a difference? What do you do?
Team Owner
Joined: Sep 2001
Posts: 62,122
Likes: 1,725
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Re: Fuel Injector Cleaner (severe-1)
Many threads on this in the past.
You can use it if you want, some say that it hurts the GM injectors, some stand by it.
You can use it if you want, some say that it hurts the GM injectors, some stand by it.
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: Fuel Injector Cleaner (severe-1)
Indeed on some of the L98 injectors the coils were open and cooled by the fuel flow, so a cleaner could eat away at the varnish insulating hte coils adn so cause injector failure.
A company like Cruzin Performance uses ultrasonic cleaning methods for this reason.
A company like Cruzin Performance uses ultrasonic cleaning methods for this reason.
Drifting
Joined: Apr 2003
Posts: 1,292
Likes: 2
Re: Fuel Injector Cleaner (65Z01)
Indeed on some of the L98 injectors the coils were open and cooled by the fuel flow, so a cleaner could eat away at the varnish insulating hte coils adn so cause injector failure.
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Burning Brakes
Joined: Feb 2000
Posts: 824
Likes: 2
From: Camden SC
Re: Fuel Injector Cleaner (britvette)
Basically, there are two types of fuel injection additives, solvent based and detergent based.
Solvent based cleaners can be quite aggressive and weaken/destroy insulation as stated above.
Detergent based additives are usually a little more expensive but will not harm Multec injectors(or insulation).
Finding Red Line additives (synthetic) may be a little more difficult but they are very good.
Off the shelf, Synthetic Valvoline Injection Cleaner may be a good choice. Many suggest tank cleaners help remove water and other problems. Gauging the effectiveness of additives is difficult, arguably time consuming and expensive. If your car sits for long periods, I definitely recommend them. Driven daily, good gasoline, harder for me to say.
Keep the greasy side down.
dlmeyers 90 coupe zf6 3speed shocks
Solvent based cleaners can be quite aggressive and weaken/destroy insulation as stated above.
Detergent based additives are usually a little more expensive but will not harm Multec injectors(or insulation).
Finding Red Line additives (synthetic) may be a little more difficult but they are very good.
Off the shelf, Synthetic Valvoline Injection Cleaner may be a good choice. Many suggest tank cleaners help remove water and other problems. Gauging the effectiveness of additives is difficult, arguably time consuming and expensive. If your car sits for long periods, I definitely recommend them. Driven daily, good gasoline, harder for me to say.
Keep the greasy side down.
dlmeyers 90 coupe zf6 3speed shocks
Le Mans Master
Joined: May 2003
Posts: 5,203
Likes: 0
From: Las Vegas Nevada
Re: Fuel Injector Cleaner (severe-1)
About every 6 months I pour a bottle of Chevron Techron in my tank. Not sure if it makes any difference. I use Chevron gas with tecron so I might be pouring money down the tank for all I know. Still runs strong a 158 on the clock
Melting Slicks
Joined: Apr 2002
Posts: 2,118
Likes: 0
From: St. Charles, MO Route 66 Corvette Club
Re: Fuel Injector Cleaner (dlmeyers)
Be very careful using Textron injector cleaner with 89 to 91 models. These had the problem Multec injectors. The Textron made my 89 run better for a while. I now have Lucas injectors. Anyone need a used set of Multecs? Most of them are still good and they are free!
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Le Mans Master
Joined: Feb 2000
Posts: 9,060
Likes: 214
From: Epping NH
Re: Fuel Injector Cleaner (Sam Lam)
General Motors issued a technical service bulletin (#913126E) cautioning service technicians not to clean its "Multec" fuel injectors. The GM bulletin said cleaners containing methanol or other strong solvents may damage the injector’s coil wire insulation and accelerate wear in the injector ball and seat. The bulletin also said cleaning is usually no value with this style of injector
The original Multec 1 injector was used from 1985 through 1999. In this injector design, the electrical coil was exposed to the fuel that passed through the injector. The fuel acted as a coolant for the coil. Some high alcohol content fuels and cleaners could erode the insulation on the coils, leading to a failure.To address the condition, the Multec 2 injector was introduced in1999. Its design is much different from the Multec 1 in that the internal coil is separated from the fuel that is passing through the injector. This eliminates coil shorting due to insulation erosion.
The original Multec 1 injector was used from 1985 through 1999. In this injector design, the electrical coil was exposed to the fuel that passed through the injector. The fuel acted as a coolant for the coil. Some high alcohol content fuels and cleaners could erode the insulation on the coils, leading to a failure.To address the condition, the Multec 2 injector was introduced in1999. Its design is much different from the Multec 1 in that the internal coil is separated from the fuel that is passing through the injector. This eliminates coil shorting due to insulation erosion.
Melting Slicks
Joined: Apr 2002
Posts: 2,118
Likes: 0
From: St. Charles, MO Route 66 Corvette Club
Re: Fuel Injector Cleaner (VetNutJim)
Jim: If anyone asks me where I am from....the answer is Columbus, GA! The Multecs are yours for shipping cost only. You should know that 6 of them read about 16.4 ohms and the other 2 are in the 11 to 12 ohm range. The two are shorted out and cannot be fixed! I just want to make sure you know what I will be shipping to you!
Let me know if you still want them and a shipping address!
Regards, Sam
Let me know if you still want them and a shipping address!
Regards, Sam
