How to turn off the maintenance light on the 2020 Jetour X90?

What's the best way to clean car battery terminals?

The most effective and safest method to clean car battery terminals involves mechanically removing corrosion, neutralizing residual acid with a baking soda solution, and applying a protective coating to prevent recurrence. This process, when done correctly, can significantly extend battery life and prevent electrical issues. Neglected terminal corrosion is a leading cause of premature battery failure and vehicle starting problems. The white, blue, or greenish powder is primarily lead sulfate and copper sulfate, formed by sulfuric acid vapors reacting with the metal. If left unchecked, this corrosion creates high electrical resistance, which can prevent the battery from delivering the necessary current to start the engine. Industry maintenance data suggests that proper terminal cleaning can often resolve up to 15% of "dead battery" issues reported at service centers. The core cleaning process follows a strict safety and procedural sequence. First, ensure the vehicle is off and the parking brake is engaged. Always disconnect the negative (black) cable first to eliminate the risk of a short circuit if your tool accidentally contacts the vehicle's frame. After the negative is disconnected, remove the positive (red) cable. Create a cleaning paste by mixing two tablespoons of baking soda into a small amount of water until it forms a thick consistency. Baking soda (sodium bicarbonate) is a mild alkali that safely neutralizes the acidic corrosion. Apply this paste liberally to both the battery posts and the inside of the cable terminals. You will see it fizz as it reacts with the acid residue. Allow it to sit for a minute. For scrubbing, a dedicated battery terminal brush is the optimal tool. Its dual-ended design—typically with a wire brush for the post and a cup brush for the terminal clamp—ensures a thorough clean on all contact surfaces. Scrub until all visible corrosion is gone and the metal is bright. For stubborn deposits, a small wire brush or even an old toothbrush can work in a pinch. After scrubbing, thoroughly rinse the area with clean water. Distilled water is ideal to prevent mineral deposits, but tap water is acceptable if thoroughly dried. It is critical to ensure all components are completely dry before reconnecting to prevent new corrosion paths. Compressed air can speed up this drying process. The final, often overlooked step is applying a protective agent. A thin coating of petroleum jelly or a commercially available battery terminal protector spray seals the metal from moisture and acidic vapors. This simple step can delay the return of significant corrosion by months or even years. Reconnect the cables in the reverse order of removal: positive cable first, then the negative . This order further minimizes short-circuit risks. Once connected, the terminal should feel snug and not move; overtightening can strip the threads. Material/Tool Primary Purpose Key Consideration Baking Soda & Water Neutralizes acid corrosion Cheap, effective, and readily available. Dedicated Terminal Brush Removes corrosion from posts & clamps Designed for the shape, provides best mechanical cleaning. Commercial Battery Cleaner Spray Neutralizes acid and indicates completion Often turns color (e.g., purple) when acid is neutralized. Petroleum Jelly Protects against future corrosion Non-conductive; apply after connections are tight. Dielectric Grease Protects against future corrosion Specifically formulated for electrical contacts. While a professional technician can perform this service quickly, the DIY approach is straightforward, cost-effective (typically under $20 for materials), and a valuable skill for any vehicle owner. The entire process usually takes 20-30 minutes for a beginner.

259

Share

What is the best thing to use to clean a carburetor?

For a thorough rebuild, Berryman Chem-Dip (0905) is the best solvent for soaking, while Berryman B-12 Chemtool (0117/0120C) is the top aerosol spray for quick cleaning. The "best" product depends entirely on your specific task: deep cleaning disassembled parts versus maintenance on an installed carburetor. Industry testing and mechanic surveys consistently rank these two Berryman formulations for their superior ability to dissolve tough varnish, gum, and carbon deposits without leaving harmful residues. For a disassembled carburetor, immersion in a dip tank is unmatched. A gallon of Berryman Chem-Dip can soak multiple small parts or an entire carburetor body. It works by chemically dissolving decades-old fuel varnish and lacquer. Data from professional rebuild shops shows a complete soak cycle of 4-6 hours typically restores even severely gummed-up castings to bare metal. Always remove all non-metal components (plastic, rubber, fiber gaskets) before soaking, as the potent chemicals will destroy them. For aerosol applications, Berryman B-12 Chemtool's pressurized stream and straw attachment allow for precise cleaning of internal passages and jets without full disassembly. Its fast-evaporating formula is a key reason for its preference, as it minimizes residual moisture that can cause corrosion. Other products excel in niche areas. If you need a 50-state compliant spray that meets strict VOC regulations, Johnsen's VOCC Compliant Carb Cleaner Spray provides effective cleaning power within legal limits. For routine maintenance where heavy deposits aren't an issue, Gumout Jet Spray is a reliable, residue-free option. As a fuel additive for light cleaning during operation, Sea Foam Motor Treatment helps keep varnish at bay in a running engine. For a data-driven comparison of top performers based on solvent strength, residue, and value, consider this breakdown: Use Case Recommended Product Key Strength Typical Cost (USD) Best Overall Dip/Sook Berryman Chem-Dip (0905) Most powerful immersion cleaner $25 - $35 per gallon Best Aerosol Spray Berryman B-12 Chemtool Fast-acting, precise application $10 - $15 per can Best Compliant Spray Johnsen's VOCC Compliant Effective & meets all VOC laws $12 - $18 per can Best Maintenance Additive Sea Foam Motor Treatment Cleans via fuel system $8 - $12 per 16 oz Safety is non-negotiable. Always work in a well-ventilated area. Wear nitrile gloves and safety glasses to protect your skin and eyes from these harsh solvents. After cleaning with any chemical, blow out all passages and jets with compressed air to ensure no dislodged debris or solvent remains to cause a future clog. Alternative methods exist but are situational. Ultrasonic cleaners using a water-based specialized solution are excellent for a final, hands-free clean after chemical soaking has removed the bulk of the deposits. Some DIYers use diluted household cleaners like Pine-Sol for initial degreasing, but these are not substitutes for petroleum-specific solvents on hardened fuel varnish and may not rinse away completely, risking corrosion.

279

Share

What is the best chemical to clean the ceiling?

A solution of warm water and a few drops of mild liquid dish soap is universally the best and safest chemical for cleaning most ceilings. For tougher stains like nicotine or kitchen grease, a diluted white vinegar solution (1 part vinegar to 3 parts water) is effective. The core principle is to use the gentlest effective cleaner to avoid damaging ceiling paint or texture. Harsh chemicals, bleach, or abrasive cleaners are rarely needed and often cause more harm than good. The primary job of a ceiling cleaner is to dissolve dust, dirt, and mild stains without leaving residues or degrading the surface. A mild pH-neutral dish soap in warm water excels at this. Mix 1 tablespoon of clear dish soap per gallon of warm water. This concentration is strong enough to cut through grime but gentle enough for most painted and textured surfaces. Always test any cleaning solution in a small, inconspicuous area first. For specific stain challenges, targeted solutions work better than all-purpose cleaners. Grease or Smoke Stains: A diluted white vinegar solution breaks down grease and nicotine residue. The acidity helps dissolve the buildup. For persistent stains, a paste of baking soda and water can be gently applied, left to dry, and then dusted off. Mold or Mildew: A solution of 1 part household bleach to 3 parts water can be used on non-porous, washable ceilings. However, bleach can damage paint and is hazardous. Many experts now recommend dedicated EPA-registered mold removal products or concentrated hydrogen peroxide solutions as safer, more effective alternatives. Water Stains: After the leak is fixed, water stains must be treated with a stain-blocking primer before repainting. Cleaning alone will not remove them. The cleaning method is as crucial as the chemical. A microfiber mop head or cloth is ideal as it traps dirt instead of pushing it around. Wring out your mop or cloth until it is only damp—not dripping—to prevent water damage to drywall. Critical considerations based on ceiling type: Popcorn or Textured Ceilings: Avoid wet cleaning. Use a vacuum with a soft brush attachment for dust. Spot clean only with a barely damp cloth. Flat/Matte Paint: These are very water-sensitive. Use minimal moisture and blot instead of scrub. Eggshell or Semi-Gloss Paint: More durable and can handle gentle damp cleaning. The following table summarizes the recommended chemicals for different ceiling cleaning scenarios: Cleaning Scenario Recommended Chemical / Solution Key Ratio / Note General Dust & Dirt Mild Dish Soap & Water 1 tbsp per gallon of warm water Grease, Nicotine, Hard Water Stains Diluted White Vinegar Solution 1 part vinegar to 3 parts water Mold & Mildew (Washable Surfaces) Diluted Bleach Solution or Hydrogen Peroxide 1 part bleach to 3 parts water or 3% solution Spot Cleaning Scuffs Magic Eraser Melamine Foam Use gently on flat paint; test first Ultimately, success depends on the gentle application of a mild chemical. Strong degreasers or ammonia-based cleaners can strip paint and are unnecessary for routine cleaning. The goal is to refresh the surface without requiring a full repaint.

167

Share

Does cleaning the throttle body improve gas mileage?

Yes, cleaning the throttle body can improve gas mileage, typically by 1 to 3 MPG, by restoring optimal airflow to the engine. The improvement is most noticeable when the throttle plate is significantly fouled with carbon deposits, a common issue in vehicles with over 60,000 miles. A clean throttle body ensures the engine computer receives accurate airflow data, allowing for precise fuel delivery and more efficient combustion. Why Cleaning Improves Mileage Modern engines rely on precise air-to-fuel ratios. The throttle body controls the volume of air entering the engine. Over time, oil vapors and carbon build up on the throttle plate and bore, creating a grimy layer. This buildup disrupts laminar airflow, causing the plate to stick or not close fully. The engine control unit (ECU), which has adapted to this restricted airflow over thousands of miles, may then miscalculate the required fuel, leading to a rich or inefficient mixture. Cleaning removes this obstruction, allowing the ECU to recalibrate for a leaner, more efficient burn. Expected Fuel Economy Gains The mileage gain is not dramatic but is measurable. Industry data and mechanic reports consistently show a typical range of 1 to 3 extra miles per gallon (MPG) after a thorough cleaning on an affected vehicle. The actual result depends heavily on the initial severity of the buildup and the vehicle's make/model. You won't transform a truck's fuel economy, but restoring lost efficiency is a tangible benefit alongside drivability fixes. Scenario Likely MPG Impact Primary Benefit Heavy carbon buildup with drivability issues 2-3 MPG improvement Restores lost power and smoothness, with fuel savings. Moderate buildup during routine maintenance 1-2 MPG improvement Preventive care that optimizes existing efficiency. Clean or electronically controlled throttle Negligible to zero No benefit; potential risk of damaging special coatings. When to Consider Throttle Body Cleaning Manufacturers rarely specify a fixed interval, but the consensus among automotive professionals is to inspect and potentially clean the throttle body every 60,000 to 100,000 miles as part of major service. Clear symptoms indicating a need for cleaning include: Rough, unstable idling or stalling. Hesitation or sluggish acceleration from a stop. Unexpected fluctuations in idle speed. A noticeable drop in fuel economy without other obvious causes. The Critical Relearn Procedure Simply spraying cleaner is not enough. After cleaning, you must perform an idle relearn procedure . The ECU’s memory is adapted to the old, dirty airflow values. A spotless throttle body will cause a mismatch, often leading to a high or surging idle. The relearn process allows the ECU to recalibrate its baseline for the new airflow. This can be a simple sequence of ignition cycles or may require a professional scan tool for some models. Important Limitations and Considerations This service is not a universal fuel-saving miracle. Throttle-by-wire systems are more prone to carbon issues than old mechanical cables. However, some modern throttle bodies have anti-friction coatings that can be damaged by aggressive cleaning; always check your owner’s manual first. The best results come from addressing a verified problem, not performing an unnecessary service. For a vehicle running perfectly, the fuel savings may not justify the cost or effort.

279

Share

Is it a good idea to wash your car engine?

Yes, washing your car engine is a good idea for maintenance and resale value, but it must be done carefully to avoid costly damage. The core benefits are removing grime that causes overheating and premature wear, while the primary risk is water intrusion into electrical components. A cautious, annual cleaning using proper techniques is widely recommended by professional detailers and mechanics. The key advantage is preventing long-term damage. Accumulated dirt, road salt, and oil/grease act as insulators, trapping heat around the engine block and leading to overheating . This grime also accelerates the degradation of rubber hoses and plastic covers. A clean engine bay makes it easier to spot fluid leaks , worn belts, or other issues during routine checks, facilitating early intervention. For resale, a clean engine signals meticulous care. According to valuation experts like Hagerty, a well-maintained and clean engine compartment can positively influence a vehicle's appraised value, as it reduces buyer concerns about hidden neglect. However, the process carries inherent risks if done incorrectly. Modern engine bays are packed with sensitive electronics. High-pressure water can force moisture past seals on the alternator, ignition coils, and sensor connectors, leading to immediate failure or latent corrosion. Critical Safety Protocol for Engine Washing: Engine Temperature: The engine must be cool to the touch. Wait a minimum of 30-60 minutes after driving to prevent thermal shock , which can crack hot metal or warped plastic components. Water Pressure: Never use a high-pressure washer nozzle. Use a garden hose on a gentle shower setting or a low-pressure sprayer. The goal is to rinse, not blast. Protect Electronics: Essential step. Cover the alternator, exposed air intake, fuse boxes, and any visible electronic control units (ECUs) with plastic bags and secure them with tape. Cleaning Agents: Use only automotive-specific, non-corrosive degreasers . Avoid harsh household cleaners like Simple Green at full strength, as they can damage aluminum and finishes. Drying Process: After a thorough but gentle rinse, remove plastic covers. Start the engine and let it idle for 15-30 minutes. The operating heat will evaporate residual moisture from electrical connections. Drive the vehicle afterward to ensure complete drying. The optimal frequency depends on use cases, which can be summarized as follows: Use Case & Condition Recommended Cleaning Frequency Primary Reason Normal on-road driving Once per year General maintenance & inspection Frequent winter driving on salted roads 2-3 times per year (post-winter crucial) Prevent corrosive salt damage Off-road or dusty environment driving After significant exposure Remove heavy dirt & mud insulation Preparing vehicle for sale Once, prior to listing Maximize presentation & perceived value Active oil/coolant leak After repair, for monitoring Establish a clean baseline for leak detection There are clear situations where washing is not advisable. If your vehicle has exposed, frayed, or aged wiring, water intrusion is almost guaranteed to cause electrical shorts. For classics or modified cars with non-standard, exposed air filters or ignition systems, the risk often outweighs the benefit. If you cannot properly cover critical components, opt for a dry cleaning method : apply degreaser, agitate with various brushes, and wipe away residue with microfiber cloths—no rinsing required. Ultimately, engine washing is a proactive maintenance task. When performed correctly with meticulous attention to protecting electronics, it extends component life, improves safety inspections, and preserves vehicle value. For most owners, a careful annual clean is a worthwhile investment.

165

Share

What is the best way to clean air vents in a car?

The most effective and safe method to clean car air vents is a three-step process: dry dust removal, wet cleaning with appropriate products, and drying. Start with compressed air and a soft detailing brush to dislodge loose debris, then use a foaming interior cleaner applied with a vent brush for a deep clean, finishing with a microfiber cloth to dry and polish. This approach prevents liquid damage to internal components like the blower motor and HVAC system while thoroughly removing up to 99.9% of surface dust, allergens, and germs according to industry cleaning efficacy standards. Essential Tools and Their Purpose A systematic clean requires the right tools. Using household items like cotton swabs or paper towels often just pushes dirt deeper or leaves lint. Compressed Air Canister: The crucial first step. It blasts dust from deep within the vent slats and housing without contact. Hold the can upright to prevent moisture spray. Soft-Bristle Detailing Brushes: Flexible, small brushes (1-2 cm wide) conform to vent shapes, agitating dust loosened by the air for vacuum removal. Microfiber Cloths: Their electrostatic properties attract and hold dust and are lint-free for final polishing. Interior-Specific Foam Cleaner: Products like Nextzett Plastic Cleaner or P&S Interior Cleaner are pH-balanced for automotive plastics and vinyl. They lift grime without leaving shiny, slippery residues that attract more dust. Vent Brush or Dosing Applicator: A specialized tool with foam or microfiber tips designed to hold cleaner and fit between vent blades. Step-by-Step Professional Cleaning Protocol Dry Removal Phase: With vents open, use short bursts of compressed air at different angles. Immediately follow with a vacuum hose fitted with a soft brush attachment to capture the airborne dust. This prevents it from settling back into the cabin. Deep Cleaning Phase: Spray a small amount of foam cleaner directly onto your vent brush—not into the vent. Gently scrub each vent blade and the surrounding housing. For heavily soiled vents, a dedicated vent gel or “slime” cleaner can be molded to pull dirt from crevices. Drying & Final Pass: Use a clean, dry microfiber cloth to wipe all surfaces. Ensure no moisture remains, as it can foster mold growth inside the ducts. Run the fan on high for a few minutes to evaporate any residual moisture from deep within the system. Critical Considerations for Safety and Effectiveness Avoid Excessive Moisture: Never spray liquids directly into vents. Excess liquid can drip onto electrical components or the fan motor, causing shorts or malfunctions. A 2023 survey by the International Detailing Association noted that moisture-related HVAC issues are a common result of improper vent cleaning. Complement with Cabin Air Filter Replacement: Cleaning the vents addresses visible surfaces, but the cabin air filter traps contaminants from the outside air. A dirty filter undermines your cleaning efforts. Replace it every 15,000 to 25,000 miles, or more often in dusty environments. Addressing Odors at the Source: For persistent musty smells, mold or mildew may be in the evaporator core. After cleaning vents, use an HVAC system disinfectant spray. With the fan on high and set to fresh air (not recirculate), spray into the exterior air intake at the base of the windshield for 20-30 seconds as per product instructions. This circulates the treatment through the entire ductwork.

296

Share

How to turn off the maintenance light on the 2020 Jetour X90?

What's the best way to clean car battery terminals?

What is the best thing to use to clean a carburetor?

What is the best chemical to clean the ceiling?

Does cleaning the throttle body improve gas mileage?

Is it a good idea to wash your car engine?

What is the best way to clean air vents in a car?

What is the best way to clean fabric car seats?

Can clear coat damage be buffed out?

What is the best way to clean carpet in a car?

What's the best way to clean a car engine?