ACDelco Top Engine Cleaner is effective in cleaning fuel injectors, intake manifolds, intake and exhaust valves, pistons, heads, and combustion chambers. This engine cleaner can help eliminate deposits that may cause rough idle, stalling, hesitation, pings, and engine run-on. ACDelco Top Engine Cleaner is for use with 6-cylinder and 8-cylinder carbureted engines. ?
| FAQ - Answer 1 | No, the fuel system should be cleaned whenever the engine appears to be running poorly such as difficult starts, rough idle or poor acceleration. |
| FAQ - Answer 2 | Yes, low octane or cetane fuel can cause engine knock which can damage the engine. Fuel with a minimum amount of detergents and additives can also lead to harmful injector and engine deposits causing difficult starts, poor acceleration and reduced gas mileage. |
| FAQ - Answer 3 | Yes, fuel system cleaning can reduce or eliminate many causes of fuel system problems. If problems persist after a second system cleaning the problem is more serious and further investigation will be required. |
| FAQ - Answer 4 | No, but if ACDelco Fuel System Treatment Plus does not correct the problem after two treatments other types of cleaning or tuning will be required. |
| FAQ - Answer 5 | Yes, difficulty starting, rough idling, poor acceleration and poor gas mileage are all signs the fuel system may need cleaning. |
| FAQ - Answer 6 | No, each of these cleaners can be used independently or in combination with each other to maximize system cleaning. Under most circumstances these products do not require any other product prior to or with any other product. If symptoms continue further diagnostics or repairs may be needed. |
| FAQ - Question 1 | Should I clean my fuel system regularly? |
| FAQ - Question 2 | Can using a low octane/cetane fuel cause significant problems with my fuel system components? |
| FAQ - Question 3 | Is do-it-yourself fuel system cleaning enough to keep my vehicle running smoothly? |
| FAQ - Question 4 | Should I take my vehicle to a technician regularly for a professional fuel system cleaning? |
| FAQ - Question 5 | Are there symptoms I can look for that show my vehicle might need a fuel system cleaning? |
| FAQ - Question 6 | Are there other products that are necessary to use before/after/along with these fuel system cleaners? |
| Flammable | Yes |
| Good Maintenance Practices - Section 1 - Bullet 1 | For best results, this product should be used in conjunction with an engine tune-up. |
| Good Maintenance Practices - Section 1 - Bullet 2 | With severe deposit conditions, an additional treatment may be required. |
| Good Maintenance Practices - Section 1 - Bullet 3 | CAUTION: When used indoors, connect exhaust removal equipment to the car. |
| Good Maintenance Practices - Section 1 - Bullet 4 | Do not use this solvent for the front or rear carburetors of a 3x2 setup (solvent may dissolve throttle blade sealer), the secondary barrels of a 4-barrel carburetor, or the rear carburetor secondary barrels or front carburetor of a 2x4 setup with progressively opening throttles. In this last application, use in both front and rear carburetor primary barrels only on 2x4 setups with simultaneously opening throttles. |
| Good Maintenance Practices - Section 1 - Bullet 5 | Warm up engine to normal operating temperature. If the vehicle has an AIR management system, disconnect the AIR diverter valve solenoid to divert the AIR from the converter. Remove air cleaner. Run engine at medium idle (800-1,000 RPM) and spray cleaner directly into the carburetor throat, striking automatic choke plate, main throttle plate, and shafts. Spray around walls and over entire exposed areas (Note: spray will reduce RPM to 400-500| this is normal). If engine stalls, restart engine before continuing to spray. When can is empty, turn off ignition. Let engine soak for 15 minutes. Replace air cleaner. Run engine above idle speed to blow out deposits. Restore AIR management systems. |
| Good Maintenance Practices - Section 1 - Bullet 6 | The goal of proper fuel system maintenance is to keep the system clean and help ensure the most economical and efficient fuel system life. |
| Good Maintenance Practices - Section 1 - Bullet 7 | Some of the ways contaminants can be kept out of the system from the onset are by keeping fuel system components, especially fuel transfer equipment like nozzles, tanks, and hoses, free from surface dirt and out of the rain. |
| Good Maintenance Practices - Section 1 - Bullet 8 | Performing regular fuel system cleaning and maintenance helps remove fuel varnish build-up, remove intake valve deposits, and reduce cylinder head deposits. |
| Good Maintenance Practices - Section 1 - Bullet 9 | One of the major goals of fuel system cleaning and maintenance is to maximize fuel economy, which is a huge concern with today's fuel prices. In order to maximize fuel economy and avoid significant, costly fuel system repairs, you should regularly check the tire pressure, stay vigilant with engine tune-ups, regularly check tire wear for signs of poor wheel alignment, and run air conditioning only when necessary. You should also change the oil as required, regularly check cooling system operation, check for dragging brakes, avoid excessive idling, drive at the speed limit, and accelerate moderately from a stop. |
| Non Chlorinated | No |
| Programming Required | No |
| Signs of Wear & Troubleshooting - Section 1 - Bullet 1 | Fuel system service is possibly required when the vehicle is hesitating, having trouble starting, achieving sub-par gas mileage, operating sluggishly, and/or providing poor overall performance. |
| Signs of Wear & Troubleshooting - Section 1 - Bullet 2 | Faulty fuel injectors in particular can cause a number of issues, including abrupt engine power, engine misfire, rough idling, fuel leakage, and reduced fuel economy |
| Signs of Wear & Troubleshooting - Section 1 - Bullet 3 | Fuel injectors (particularly the injector nozzles) are in an environment where tremendous heat is generated. The burning of fuel can leave hardened carbon deposits on piston valves and fuel injector nozzle heads that interfere with the spray pattern and flow of fuel. The preceding issues, especially when multiple issues are encountered at the same time, are indications that this and other forms of contamination have occurred. |
| Signs of Wear & Troubleshooting - Section 1 - Bullet 4 | Although significant repair of fuel system components may be required in serious cases, fuel system additives are often an excellent solution for nagging problems. |
| Zero Volatile Organic Compounds | No |
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