Knocking in my engine

Tiny
JAMESBURROW
  • MEMBER
  • 2001 FORD F-150
  • 5.4L
  • V8
  • 4WD
  • AUTOMATIC
  • 300,000 MILES
I put a different catalytic converter on my truck and it ended up being stopped up, so it made my engine start knocking. So I took it back off but they knocking did not stop. Where could be knocking be coming from?
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Wednesday, November 11th, 2020 AT 6:21 PM

7 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi,

Is it a knocking or ticking? If it is a knocking, that is usually an indication of a rod or main bearing in the engine. Is it loud enough for you to record and upload for me to hear?

The reason I asked about a ticking is because the 5.4L engines are known to have exhaust manifold leaks which will make more of a ticking. Also, they are known to have spark plugs issues where they thread into the head.

Take a look through this link and let me know if it is helpful. Also, if you can record it so I can hear the sound, it may help. Let me know if it does it all the time (warm or cold), if it is affected by engine load or anything you can think of that may help.

https://www.2carpros.com/articles/engine-noises

I will watch for your reply.

Take care,
Joe

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Wednesday, November 11th, 2020 AT 6:30 PM
Tiny
JAMESBURROW
  • MEMBER
I'm at work right now but when I get off I'll record the sound and send it to you. It could be a ticking noise because the noise is coming from the left side of the motor at the bottom. I can hear it more underneath the truck than I do at the top. Also before I change out my catalytic converter my oil pressure gauge would bounce when idling. Now I have to keep it revved up to 1,500 to 2,000 RPM's or else the oil pressure gauge will drop and the truck will shut off.
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Thursday, November 12th, 2020 AT 5:31 AM
Tiny
JAMESBURROW
  • MEMBER
And it seems to get worse when the engine gets warmed up.
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Thursday, November 12th, 2020 AT 5:33 AM
Tiny
JAMESBURROW
  • MEMBER
Video.
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Thursday, November 12th, 2020 AT 4:52 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
In all honesty, I hear what sounds like an exhaust leak (tick). However, when you revved the engine, I heard a knock when you let off. If I had to guess, I think you have a bad connecting rod bearing or one of the main bearings. If the oil is clean and full, I suspect you should remove the oil pan and actually check for a loose rod bearing.

The proper way to check bearing clearance is to use a product called plastigage. Here are the directions. I just want you to see what I am referring to. It requires a good bit of work.

_______________________________

2005 Ford Truck F 150 4WD Pickup V8-5.4L SOHC VIN 5
Crankshaft
Vehicle Engine, Cooling and Exhaust Engine Cylinder Block Assembly Crankshaft Service and Repair Procedures Crankshaft
CRANKSHAFT
Crankshaft Main Bearing Journal Diameter

pic 1

1. Measure each of the crankshaft main bearing journal diameters in at least two directions.
If out of specification, install new components as necessary.

Crankshaft Main Bearing Journal Taper

pic 2

1. Measure each of the crankshaft main bearing journal diameters in at least two directions at each end of the main bearing Journal.
If out of specification, install new components as necessary.

Crankshaft Main Bearing Journal Clearance

pic 3

Special Tool(s)

NOTE: Crankshaft main bearing journals must be within specifications before checking journal clearance.

1. Remove the crankshaft main bearing caps and crankshaft main bearing.

Pic 4

2. Lay a piece of Plastigage across the face of each crankshaft main bearing surface.

3. NOTE: Do not turn the crankshaft while carrying out this procedure.

Install and remove the crankshaft main bearing cap.

Pic 5

4. Verify the crankshaft journal clearance.
If out of specification, install new components as necessary.

Crankshaft End Play

pic 6

Special Tool(s)

1. Measure the crankshaft end play. Use a Dial Indicator Gauge with Holding Fixture to measure crankshaft end play.
2. Position the crankshaft to the rear of the cylinder block.
3. Zero the indicator.

Pic 7

4. Move the crankshaft to the front of the cylinder block. Note and record the crankshaft end play.
If crankshaft end play exceeds specifications, install a new crankshaft thrust washer or crankshaft thrust main bearing.

Crankshaft Runout

pic 8

Special Tool(s)

pic 9

1. NOTE: Crankshaft main bearing Journals must be within specifications before checking runout.

Use the Dial Indicator Gauge with Holding Fixture to measure the crankshaft runout.
Rotate the crankshaft and subtract the lowest dial indicator reading from the highest dial indicator reading to figure the crankshaft runout. If it is out of specification, install new components as necessary.

Crankshaft - Connecting Rod Journal Taper, Out of Round

pic 10

1. Measure the crankshaft connecting rod journal diameters in two directions perpendicular to one another at each end of the connecting rod journal. The difference in the measurements from one end to the other is the taper. Verify measurement is within the wear limit.
If out of specification, install new components as necessary.

_________________________

If this is the original engine and it has 300K, you would likely be better off replacing the engine simply because of wear.

Let me know if you have any questions, and I'm sorry for the bad news. Please remember that I am listening to a recording, so I could be wrong. However, the knocking was somewhat loud when you left off the throttle.

If I can help in any way, let me know.

Take care,
Joe
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Thursday, November 12th, 2020 AT 7:08 PM
Tiny
JAMESBURROW
  • MEMBER
I have a friend that has a motor out of a 2000 Ford F150 he said he would sale me for $100.00. Would I be better off just changing motors?
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Sunday, November 15th, 2020 AT 12:32 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi,

Based on what I heard and the number of miles, it may be a good idea. You will likely have to switch components between the two engines, but it should work as long as it is also a 5.4L. When I say switch components, I'm referring to sensors and electronics. The difference in the model year may make a difference as far as connectors and so on. Just take a few minutes and confirm that sensors and such exist in the same places.

If you decide to do this, here are the directions for the removal and replacement of the engine. The attached pics correlate with the directions.

_____________________________________

2001 Ford Truck F 150 4WD Pickup V8-5.4L SOHC VIN L
Removal
Vehicle Engine, Cooling and Exhaust Engine Service and Repair Procedures Engine Removal
REMOVAL

pic 1

Special Tool(s)

Removal
1. Disconnect the battery ground cable.
2. Remove the hood.
3. Remove the engine air cleaner.
4. Remove the A/C condenser core.

Pic 2

5. Disconnect the climate control vacuum connector.

Pic 3

6. Disconnect the evaporative emission canister purge valve vacuum connector.

Pic 4

7. Position the power steering reservoir aside.
Remove the upper bolt.
Remove the lower bolts.
Position the reservoir aside.
8. Remove the intake manifold.

Pic 5

9. Disconnect the two starter cable leads from the starter relay.

Pic 6

10. Disconnect the two 42-pin connectors and the single pin connector.

Pic 7

11. Disconnect the 16-pin connector and the single pin connector.

Pic 8

12. Remove the bolts and the junction block bracket.

Pic 9

13. Compress the holding tabs and disconnect the heater water hoses from the heater core.
14. Raise and support the vehicle.

Pic 10

15. Remove the drain plug and drain the engine oil.

Pic 11

16. Disconnect the A/C compressor electrical connection.

Pic 12

17. Disconnect the crankshaft position (CKP) sensor.
18. Remove the starter motor.
19. Remove the A/C compressor.

Pic 13

20. Remove the A/C line (muffler) bracket and position aside.

Pic 14

21. Remove the transmission fluid cooler hose from the block-mounted clip.

22. NOTE: The upper two transmission bell housing bolts will be removed later.

Remove the transmission inspection cover, torque converter bolts and transmission-to-engine block bolts.

Pic 15

23. Remove the nut and the transmission oil filler tube.

Pic 16

24. Remove the bolts and position the power steering pump aside.

Pic 17

25. Disconnect the oil pressure sender electrical connection.

Pic 18

26. Disconnect the heated exhaust gas oxygen sensor electrical connectors.

Pic 19

27. Remove the RH exhaust manifold to three-way catalytic converter nuts.
28. Remove the RH exhaust manifold studs.

Pic 20

29. Remove the LH exhaust manifold to three-way catalytic converter nuts.
Position the Y-pipe aside.

Pic 21

30. Remove the RH motor mount bolt.

Pic 22

31. Remove the LH motor mount bolt.

Pic 23

32. Remove the oil bypass filter.

Pic 24

33. Remove the oil pressure sensor.

Pic 25

34. Slide back the hose clamp and disconnect the lower radiator hose from the oil filter adapter.
35. Lower the vehicle.
36. Support the transmission.
37. Remove the upper two transmission bell housing bolts and the wiring harness bracket.

Pic 26

38. Remove the heater water inlet tube and discard the O-ring seal.

Pic 27

39. Install the special tool.
40. Remove the engine.

Pic 28

41. NOTE: Windsor engine shown.

NOTE: If engine disassembly is to be carried out, remove the rear crankshaft oil seal slinger and the crankshaft rear oil seal.

Remove the flywheel.
42. Place the engine on a suitable engine stand.

________________________________

Install

2001 Ford Truck F 150 4WD Pickup V8-5.4L SOHC VIN L
Installation
Vehicle Engine, Cooling and Exhaust Engine Service and Repair Procedures Engine Installation
INSTALLATION

pic 29

Special Tool(s)

Installation

pic 30

All vehicles
1. Attach the special tool.
2. Remove the engine from the engine stand.

3. CAUTION: Do not use metal scrapers, wire brushes, power abrasive discs or other abrasive means to clean the aluminum retainer plate. These tools cause scratches and gouges, which make leak paths. Use a plastic scraping tool to remove all traces of old sealant.

If removed, clean and inspect the mating surface.

Pic 31

4. NOTE: If not secured within four minutes, sealant must be removed and sealing area cleaned with metal surface cleaner. Allow to dry until there is no sign of wetness, or four minutes, whichever is longer. Failure to follow this procedure can cause future oil leakage.

If the retainer plate was removed, apply a 4 mm (0.16 inch) bead of silicone gasket and sealant around the rear oil seal retainer sealing surface.

Pic 32

5. If removed, install the crankshaft rear oil seal retainer and bolts.

Pic 33

6. If removed, install a new crankshaft rear oil seal.
7. If removed, install the crankshaft oil slinger.

Pic 34

Romeo engine (4.6L)
8. Install the flexplate and the bolts. Tighten the bolts in the sequence shown.

Pic 35

Windsor engine (SAL)
All vehicles

9. NOTE: Align the engine-to-transmission dowels before installing engine to transmission bolts.

Position the engine in the vehicle, and remove the Modular lifting bar and the jack supporting the transmission.
10. Raise and support the vehicle.
11. Install the lower five transmission bell housing bolts.

Pic 36

12. Position and install and the LH engine mount bolt.

Pic 37

13. Position and install the RH engine mount bolt.
14. Install the starter motor.
15. Install the A/C compressor.
16. Install the RH exhaust manifold studs.

Pic 38

17. Install and tighten the four nuts.

Pic 39

18. NOTE: Only three bolts are required for installation.

Install the bolts.

Pic 40

19. Position the lower radiator hose on the oil filter adapter and secure the hose clamp.

Pic 41

20. Install the oil bypass filter.

Pic 42

21. Install the oil pressure sensor.

Pic 43

22. Connect the oil pressure sensor electrical connector.

Pic 44

23. Install the transmission fluid cooler hose in the clip.

Pic 45

24. Install the A/C line (muffler) bracket.

Pic 46

25. Connect the A/C compressor electrical connector.

Pic 47

26. Connect the crankshaft position sensor electrical connector.

Pic 48

27. Connect the heated exhaust gas oxygen sensor electrical connectors.
28. Lower the vehicle.

Pic 49

29. NOTE: Lubricate the O-ring seals with transmission fluid.

Install the transmission oil filler tube and nut.

Pic 50

30. NOTE: Do not reuse the O-ring seal.

On Windsor engines, slide the water heater tube forward over the new O-ring seal.
Lubricate the O-ring seal with engine coolant.

Pic 51

31. Position the transmission wiring bracket and install the upper two transmission bell housing bolts.
32. Connect the transmission wiring harness connectors.
33. Install the intake manifold.
34. Install the A/C condenser.
35. Install the radiator.
36. Install the two heater hoses at the heater core.

Pic 52

37. Install the power steering reservoir.
Position the reservoir.
Install the two lower bolts.
Install the upper bolt.
38. Install the engine air cleaner (ACL) and the air cleaner outlet tube.
39. Fill all fluids to the correct levels.
40. Connect bulkhead connectors.
Tighten the bolt.
41. Install the hood.
42. Connect the battery ground cable.
43. Start the engine and check for leaks. Stop the engine and recheck the fluid levels.
44. Recharge the A/C system.

__________________________________

I hope this helps. Let me know if you have any questions.

Take care,
Joe
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Sunday, November 15th, 2020 AT 6:10 PM

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