I have a broken oil pan .will the engin start after replacing the pan?

1. Disconnect the battery negative cable. Refer to Battery Cable Replacement (Positive/Negative) in Starting and Charging.
2. Raise the vehicle. Refer to Vehicle Lifting.
3. Remove the oil pan drain plug and drain the engine oil into a suitable container.
4. Remove the oil filter.
5. Remove the oil pan skid plate.
6. Remove the crossbar.
7. Remove the bolts holding the battery cable brackets to the oil pan.
8. Remove the starter and move aside. Refer to Starter Motor Replacement in Starting and Charging.
9. Remove the transmission cover.
10. Remove the bracket for the starter positive cable and the transmission cooler lines form the side of the oil pan.
11. Disconnect the low oil level sensor electrical connector.
12. Remove the access plugs for the oil pan rear nuts.

13. Remove the following oil pan fasteners:
13.1. Remove the oil pan bolts.
13.2. Remove the two nuts at the crankshaft rear oil seal housing.
13.3. Remove the transmission to oil pan bolts.

14. Remove the oil pan and the gasket. Refer to Oil Pan Removal.

IMPORTANT: The low oil level sensor is not reusable. Use a NEW low oil sensor.

15. Remove the low oil level sensor, if required.
16. Clean all sealing surfaces on the engine and the oil pan. Refer to Oil Pan Clean and Inspect.
INSTALLATION PROCEDURE

NOTICE: Refer to Fastener Notice in Service Precautions.

IMPORTANT: The low oil level sensor is not reusable. Use a NEW low oil sensor.

1. Install a NEW low oil level sensor, if removed.
Tighten the sensor to 20 Nm (15 ft. Lbs).
NOTICE: Any time the transmission and the engine oil pan are off of the engine at the same time, install the transmission before the oil pan. This is to allow for the proper measurement of the oil pan tolerance. Failure to achieve the correct clearance can result in premature transmission failure.
2. Install the oil pan. Refer to Oil Pan Installation.
3. Install the transmission to oil pan bolts and nuts.
Tighten the bolts to 47 Nm (35 ft. Lbs.).
4. Install the access plugs for the oil pan rear nuts,
5. Install the bracket for the starter positive cable and the transmission cooler lines to the side of the oil pan.
Tighten the bolts to 12 Nm (106 inch lbs).
6. Connect the low oil level sensor electrical connector.
7. Install the transmission cover.
Tighten the bolts to 12 Nm (106 inch lbs).
8. Install the starter. Refer to Starter Motor Replacement in Starting and Charging.
9. Install the bolts holding the battery cable brackets to the oil pan.
Tighten the bolts to 12 Nm (106 inch lbs).
10. Install the crossbar.
Tighten the bolts to 100 Nm (74 ft. Lbs.).
11. Install the oil pan skid plate.
Tighten the bolts to 20 Nm (15 ft. Lbs).
12. Install the oil filter and the oil pan drain plug. Refer to Engine Oil and Oil Filter Replacement
13. Lower the vehicle.
14. Fill the engine with oil. Refer to Engine Oil and Oil Filter Replacement
15. Connect the battery negative cable. Refer to Battery Cable Replacement (Positive/Negative) in Starting and Charging.

P0340 mercury villager 2001

Jack up truck for safety sake put jack stands under frame . remove all engine oil remove all bolts holding oil pan on if their is not enough room to drop pan you may have to remove bolts holding motor mounts and jack up engine. if front end linkage is still in the way remove linkage. pull oil pan out. check gasket that was between block and oil pan if any stuck to block of engine remove with gasket scraper or wire brush or wire wheel on drill.make sure mating surface is clean put new gasket on new oil pan I like to use a high temp sealer on gasket both sides. Put pan with gasket back in place of old oil pan and tighten all bolts. jack engine down ,replace moter mount bolts replace any linkage you took apart. and dont forget to replace engine oil. make sure oil plug is in pan before pouring oil in . before starting engine check that no oil is leaking than start engine and check for any leaks again if all is good your done. if this was helpful please leave good feed back. A good temp fix on a rusted oil pan is JB weld make sure no oil is on pan clean with towel and rubbing alchol .you may have to drain oil first. if it is rusted badly you may have to use a wire brush on a drill to clean the area to patch. if patched properly it may last for years.

If the battery was disconnected during oil pan replacement then a idle relearn will be needed. drive car for awhile without using accessories (a/c) then return to idle shut car off 10 min then try again. If motor was lifted to remove oil pan check for broken vacuum hoses a large leak can keep engine from idling.

HI IF YOU LOOK UNDER THE CAR YOU WILL SEE A OIL PAN WHERE THE OIL STARTS FOR THIS ITEM THAT AS BROKEN OFF WILL BE AT THE BOTTOM OF PAN AND WILL NOT MOVE FROM THE SPOT IT FELL

Removal & Installation

2.4L Engine

1. Before servicing the vehicle, refer to the Precautions Section.
2. Drain the engine oil.
3. Remove or disconnect the following:
   
   Negative battery cable Structural collar A/C compressor bracket to oil pan bolt Oil pan
   
4. Clean the oil pan and all gasket mating surfaces.

To install:

1. Install or connect the following:
   
   Oil pan gasket to the block after applying engine RTV at the oil pump parting line Oil pan. Torque the bolts to 105 inch lbs. (12 Nm). Structural collar Negative battery cable
   
2. Fill the crankcase to the correct level.
3. Start the engine, check for leaks and repair if necessary.

1. Before servicing the vehicle, refer to the Precautions Section.
2. Drain the engine oil.
3. Remove or disconnect the following:
   
   Negative battery cable Structural collar A/C compressor bracket to oil pan bolt Oil pan
   
4. Clean the oil pan and all gasket mating surfaces.

To install:

1. Install or connect the following:
   
   Oil pan gasket to the block after applying engine RTV at the oil pump parting line Oil pan. Torque the bolts to 105 inch lbs. (12 Nm). Structural collar Negative battery cable
   
2. Fill the crankcase to the correct level.
3. Start the engine, check for leaks and repair if necessary.

3.0L Engine

1. Before servicing the vehicle, refer to the Precautions Section.
2. Drain the engine oil.
3. Remove or disconnect the following:
   
   Negative battery cable Starter motor Front motor mount bracket Bending braces Torque converter dust shield Oil pan
   
   

   Fig. Oil pan mounting bolt tightening sequence-3.0L engine
   
   

To install:

1. Clean the oil pan all mating surfaces.
2. Apply RTV gasket material to the oil pan.
3. Install or connect the following:
   
   Oil pan. Tighten the bolts in sequence to 50 inch lbs. (6 Nm). Torque converter dust shield Bending braces Front motor mount bracket Starter motor Negative battery cable
   
4. Fill the crankcase to the correct level.
5. Start the engine, check for leaks and repair if necessary.

3.3L & 3.8L Engines

1. Before servicing the vehicle, refer to the Precautions Section.
2. Drain the engine oil.
3. Remove or disconnect the following:
   
   Negative battery cable Engine oil dipstick Drive belt splash shield Strut to transaxle attaching bolt and loosen the strut to engine attaching bolts Transaxle case cover Oil pan fasteners Oil pan and gasket
   

To install:

1. Clean the oil pan and all mating surfaces.
2. Apply a 1 / 8 inch bead of gasket material at the parting line of the chain case cover and the real seal retainer.
3. Install or connect the following:
   
   New gasket on the oil pan Oil pan. Torque the bolts to 105 inch lbs. (12 Nm). Transaxle case cover All bending brace bolts Drive belt splash shield Engine oil dipstick Negative battery cable
   
4. Fill the crankcase to the correct level.
5. Start the engine, check for leaks and repair if necessary.

1. Before servicing the vehicle, refer to the Precautions Section.
2. Drain the engine oil.
3. Remove or disconnect the following:
   
   Negative battery cable Engine oil dipstick Drive belt splash shield Strut to transaxle attaching bolt and loosen the strut to engine attaching bolts Transaxle case cover Oil pan fasteners Oil pan and gasket
   

To install:

1. Clean the oil pan and all mating surfaces.
2. Apply a 1 / 8 inch bead of gasket material at the parting line of the chain case cover and the real seal retainer.
3. Install or connect the following:
   
   New gasket on the oil pan Oil pan. Torque the bolts to 105 inch lbs. (12 Nm). Transaxle case cover All bending brace bolts Drive belt splash shield Engine oil dipstick Negative battery cable
   
4. Fill the crankcase to the correct level.
5. Start the engine, check for leaks and repair if necessary.

Could be a broken oil pressure sending line or something worse.... Hole in oil pan, broken/missing (blown-off) oil filter.

There are several reasons why you would hear a loud knock from the engine, and the knock will usually be either in the top end or in the lower or bottom end of the engine.

The first thing that should be done is to drain the engine oil, and then pour the oil filter into a pan where you can see it, and if there is a lot of metal flakes, or a fine cloud of brass floating in the engine oil, you will not want to waste the time or the money trying to repair that engine by dropping the oil pan and replacing the piston rod bearings, it will only be a very temporary patch at best, that is if the patch even lasts for a day.

If you do find metal flakes in the engine oil and oil filter, the piston rod bearings will not be the only bearings in the engine that will need to be replaced, and the crankshaft main bearings can only be replaced by removing the engine and placing it upside-down on a good engine stand. The biggest problem would be that even if you did successfully replace the piston rod and crankshaft main bearings, it would only take one piece of metal flake that was left over in the engine block to find its way to one of your new bearings and then it will take no time at all before that engine will be right back where you started, and that is how important just the cleaning process is in repairing or replacing internal engine components.

If you do not find any metal in the engine oil or oil filter, then you should attempt to find the actual cause of the knock before you decide how to repair the engine, and you will have to remove the engine oil pan to inspect the rod bearings, and if you do remove the engine oil pan make sure that when you inspect the rod bearings that you only do so one at a time because you can not mix up the rod caps, and be very sure that when you remove a rod cap that you do replace it the same way that it came off, and if you turn around the rod cap and install it the wrong way or scratch the crankshaft bearing surface the rod bearing will fail.

If you can hear the knocking louder from under the vehicle then the most likely causes for a lower end engine knock are a damaged piston, worn out piston rod bearings, a broken piston rod, a broken flex-plate, and sometimes loose torque converter to flex-plate bolts, and the only parts that you can really check out without opening up the engine would be a broken flex-plate, or for any loose torque converter to flex-plate bolts.

If you can hear the knocking more from the top of the engine, then the most likely causes for an upper engine knock would be a faulty lifter, or broken rocker arm, or a broken valve spring allowing the valve to contact the piston, and it will require the removal of the valve covers and possibly the intake manifold to inspect for the problem.

If you have any doubts then it would be a good idea to consider a good used engine that you can hear run before you buy it, or a rebuilt engine for that vehicle.

I hope that this information will help you out and save you some time and a lot of money.

drain oil and filter remove.
Drop oil pan under engine.
Un bolt oil pump and re install new pump fill new oil and filter and gasket , cap , start engine test for leaks shut down re check oil level.
Vitally

If you have a hole in your oil pan, you need a new engine.