Dropping Oil Pan On 2008 Hhr: Step-By-Step Guide

If you're looking to drop the oil pan on your 2008 HHR, it's likely because you want to replace it or the oil pan gasket. This is usually due to a leak, which can be caused by external damage, an accident, or an improperly tightened drain plug. Before you begin, make sure you have the right tools and parts, including a new oil pan or gasket, engine oil, an oil filter, and an oil drain bolt. The process involves draining the old oil, removing the oil pan and gasket, cleaning the engine block, installing the new parts, and refilling the engine with new oil. It's a complex job that may require specialised tools and knowledge, so consider consulting a professional mechanic.

Detecting oil pan leaks

• Regularly check the area under your parked vehicle for any oil stains or puddles, especially after it has been sitting overnight. Oil puddles or stains under your car indicate a potential oil leak from the oil pan or other components.
• Monitor your oil dipstick: Keep a close eye on the oil level in your engine by checking the dipstick regularly. If the oil level drops over time, it suggests that you're losing oil, which could be due to an oil pan leak or other issues.
• Smoke and burning smell: After driving your vehicle, park it in a safe area and carefully inspect the engine compartment for any signs of smoke or a burning smell. Oil leaking from the oil pan can drip onto hot engine components, causing a burning smell and, in some cases, visible smoke.
• Lift your vehicle: Use a floor jack to safely lift your car and inspect the underside, focusing on the oil pan and the surrounding areas. Look for any signs of oil leaks, such as oil residue, wetness, or dripping around the edges of the oil pan.
• Engine overheating: Oil leaks from the oil pan can lead to a sudden drop in oil level, resulting in insufficient lubrication for critical engine components. This can cause overheating, increased engine temperatures, and potential engine damage. If your engine is consistently running hot, it could be a sign of an oil pan leak.
• Black smoke from the engine: If you notice black smoke coming from the engine compartment, it could be a sign of a leaking oil pan gasket. The leaking oil may come into contact with hot engine components, causing it to burn and produce black smoke.

If you suspect an oil pan leak, it is essential to address the issue promptly. Consult a certified mechanic or automotive professional to properly diagnose and repair the leak. They will have the necessary tools and expertise to identify the source of the leak and perform the required maintenance or repairs.

Removing the oil drain plug

The oil drain plug is located on either the bottom or side of the oil pan. It is usually found at the lowest possible point on the oil pan, which is attached to the bottom of the vehicle's engine.

Before removing the oil drain plug, it is important to consult the owner's manual or a trusted mechanic to determine the specific size for your vehicle. Using the correct size wrench or socket is crucial to avoid damaging the plug. It is also recommended to replace the oil drain plug gasket or washer with each oil change to ensure a proper seal.

To remove the oil drain plug, first clean the plug and the threads. Check for any signs of damage or wear that should not be present. If there is any damage, simply replace the gasket or washer, which prevents the bolt from threading too far in.

Next, tighten the plug by hand, going as far as you can without experiencing resistance. If you feel resistance early on, forcing it could strip the threads, which is not desirable. Make sure the plug is properly positioned, then proceed to torque to the spec using the correct tools. Refer to your vehicle's owner manual if you have any questions.

If you encounter a stripped oil drain plug, follow these steps:

• Assess the damage: If the oil drain plug is completely rounded off, you may need to use a specialty tool such as a rounded bolt remover. If it is partially stripped, try using a larger socket or wrench for a better grip.
• Apply heat: If the plug is stuck due to rust or corrosion, apply heat with a propane torch or heat gun to the area around the plug for a few minutes to loosen it.
• Use pliers: If you can get a grip on the plug, try using needle-nose or locking pliers to turn it counterclockwise.
• Use a screwdriver: If there is a flat surface on the plug, place a screwdriver on it and gently tap it with a hammer to turn the plug counterclockwise.
• Drill it out: As a last resort, you can drill a hole into the centre of the plug and use a screw extractor. However, this should only be done if all other methods have failed, as it may damage the oil pan.

Remember to always exercise caution when removing a stripped or rounded oil drain plug. If you are unsure, consult a professional mechanic.

Cleaning the oil pan

To clean an oil pan, you must first drain the old oil. You can do this by placing a drain pan under your vehicle, undoing the oil filter and oil drain plug, and letting the old oil drain out. Once the oil has been drained, you can begin cleaning the oil pan.

One method for cleaning the oil pan is to use a combination of dish soap and hot water. First, soak the oil pan in dish soap and then wash it with hot water and a scrub brush. Repeat this process until the oil pan is clean. You can also use a wire brush or steel wool to remove any caked-on residue. Be sure to rinse the oil pan thoroughly with hot water to remove any soap residue.

Another method for cleaning the oil pan is to use a degreaser or oven cleaner. Spray the oil pan with the degreaser or oven cleaner and let it sit for a while. Then, wash the oil pan with soapy water and a scrub brush. You can also use a power washer to clean the oil pan if you have access to one.

If your oil pan has paint on it that you want to remove, you can use aircraft paint remover. Be sure to wash the oil pan with soapy water after using paint remover to remove any residual grit.

It is important to clean your oil pan thoroughly and ensure that it is completely dry before reusing it. A dirty oil pan can contaminate your new oil and cause issues with your vehicle.

Additionally, it is important to properly dispose of your old oil and cleaning materials. Do not pour old oil down the drain or into the environment. Take it to a mechanic, auto parts store, or recycling center for proper disposal.

Replacing the oil pan gasket

Detecting Oil Pan Gasket Leak

The first step in replacing the oil pan gasket is to confirm that the oil pan gasket is indeed leaking. To do this, you will need to:

• Lift your vehicle using a floor jack.
• Clean the dirt and oil residue around the oil pan.
• Inspect the area around the oil pan and the engine block for signs of oil leaks. If engine oil residue, wetness, or dripping is present around the pan’s edges, a gasket replacement is needed.

Once a leak has been confirmed, you can proceed with the following steps:

• Place a drain pan under the vehicle and let the old oil drain out completely. You may need to remove the front subframe to access the pan.
• Remove the oil pan bolt, being careful not to damage the oil pick-up located inside the oil pan.
• Remove the motor mount, oil pan, and old gasket.
• Clean the lower engine block, oil pan, and motor mount, and let them dry.
• Apply a thin film of RTV (silicone rubber) to the mounting surface.
• Position the replacement oil sump gasket against the mounting surface and apply pressure.
• Use wire strands to keep the gasket from moving.
• Install the pan bolt and remove the wire strands.
• Torque the oil pan bolt according to the manufacturer’s specifications.
• Reinstall the oil filter, oil drain plug, and refill the crankcase with new motor oil.
• Lower the vehicle and start the engine, checking for any signs of an oil leak.

Tips and Precautions

• It is recommended to consult a professional or refer to a service manual for vehicle-specific procedures and bolt locations.
• Be careful not to bend the oil pan when removing it. Do not use a screwdriver to pry it loose, as this can bend the mounting surface.
• Double-check that all bolts are removed before attempting to remove the oil pan. Tapping the pan with a mallet can crack it if all bolts are not removed.
• Clean all sludge out of the pan and inspect for cracks before reinstalling.
• Gasket materials vary depending on the type of metals they are intended to seal. Name-brand gaskets typically come with any necessary sealants.

Reinstalling the oil filter

Locate the oil filter: Look at the front side of the engine, closest to the radiator, and down the side of the engine. The oil filter cap is a 32mm or 1 1/4 inch wrench size.

Prepare the area: Place a drain pan under the vehicle to catch any residual oil. Using a 32mm socket and extension, loosen the top of the oil filter cap. You can then unscrew the rest by hand. The oil filter is attached to the cap, so they will come out together.

Clean the area: Place a rag under the filter to catch any remaining oil, and lift the filter out. Wipe down the base of the cap to ensure no dirt or residue is left behind.

Install the new filter: Snap the new oil filter onto the cap and reinstall it. Tighten it by hand, giving it a good snug at the end to ensure it's tight. Wipe up any excess oil that may have dripped.

Refill the oil: Remove the filler cap and pour in the recommended amount of oil for your vehicle. Typically, you'll need around 4.5 to 5 quarts of oil.

Check for leaks: Start the engine and let it run for a few minutes. Check for any signs of oil leaks around the filter and cap area. If no leaks are present, you can lower the vehicle and proceed to clean up your tools.

Check the oil level: After cleaning up, check the oil level again with the dipstick. Top off the oil as needed.

This process should help ensure a successful oil filter reinstall for your 2008 HHR. Always refer to your owner's manual for additional vehicle-specific information and safety precautions.

Frequently asked questions