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I have a 2001 Lincoln LS V8 that has a knocking noise on the

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passenger side of the engine...
I have a 2001 Lincoln LS V8 that has a knocking noise on the passenger side of the engine during idle only. When running or raving the engine, the knocking goes away. What could possibly be the cause of the knocking noise in the engine?
Submitted: 8 years ago.Category: Ford
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Answered in 6 minutes by:
12/8/2009
Ford Mechanic: jblair1979, ASE Certified Technician replied 8 years ago
jblair1979
jblair1979, ASE Certified Technician
Category: Ford
Satisfied Customers: 265
Experience: Ford ASSET graduate, 1st in my class, 2001, ASE car, truck, and medium heavy duty Master technician
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HowdyCustomer! The noise could be due an oiling issue, or lack of oil getting to the camshaft on that side. can you check the oil pressure? what is the oil level at? do you have a ford/motorcraft oil filter on it? I would reccommend using the ford oil filter, it has been designed for the way for doiling systems work. can you hear the noise up high, like over the engine, or only down low, like by the wheel well, or from underneigth? thanks,
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Customer reply replied 8 years ago
How do I go about checking the oil pressure? The oil level is at full. I have a motorcraft oil filter on it. I can hear the noise up high (over the engine).
Ford Mechanic: jblair1979, ASE Certified Technician replied 8 years ago
do you hear it at the front of the engine, or the rear? do you have an oil pressure gauge?
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Customer reply replied 8 years ago
It is coming from the front of the engine. I do not have a oil pressure gauge. If I went and bought one, where is the service port located?
Ford Mechanic: jblair1979, ASE Certified Technician replied 8 years ago
let me see if i can find you some pictures...
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Ford Mechanic: jblair1979, ASE Certified Technician replied 8 years ago
while i am looking for the pictures, does the tick noise get quieter as the engine gets warmer, or does is get louder as the engine warms up?
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Ford Mechanic: jblair1979, ASE Certified Technician replied 8 years ago

graphic

 

#51 in the picture is the oil pressure sending unit, remove it, and install the gauge there.

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Customer reply replied 8 years ago
What is the pressure suppose to be reading?
Ford Mechanic: jblair1979, ASE Certified Technician replied 8 years ago
Oil pressure (hot 1,500 rpm)138-310 kPa (20-45 psi)
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Ford Mechanic: jblair1979, ASE Certified Technician replied 8 years ago

if your oil pressure is good, then remove the valve cover and loosen, and remove the cam caps one at a time, and remove, then reinstall, with slight pressure pushing them toward the front of the vehicle, when torquing them back down. graphic

where the black arrows are pointing,

tighten to 89 inch pounds. while the valve cover is off, shine a flash light down the front cover and look at the timing chain guides, and tensioner to see if there is any wear, or damage showing....

then retest,

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Customer reply replied 8 years ago

I did not accept this yet because I haven't solve the problem yet.

Ford Mechanic: jblair1979, ASE Certified Technician replied 8 years ago
ok, let me know what we need next, thanks,
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Customer reply replied 8 years ago
I'm working on taking the valve cover off. I will use your advice and will let you know. Should I replace all gasket?
Ford Mechanic: jblair1979, ASE Certified Technician replied 8 years ago
yes i would, especially if they are originals, and dont forget to use silicone sealer, at all the "t" joints, when reassembling. (where the front cover and head, and valve cover come together), thanks,
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Customer reply replied 8 years ago
What is the torque for the valve cover screws?
Ford Mechanic: jblair1979, ASE Certified Technician replied 8 years ago
89 inch pounds
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Customer reply replied 8 years ago

I had open the valve cover and the timing chain and tensioner looks good. I did notice that the plastice guide had a chip. It didn't dook like it would affect the timing chain. I closed everything back up and turn on the engine and it's still making the knocking noise. It's also throwing a P0174 code. What's next?

Ford Mechanic: jblair1979, ASE Certified Technician replied 8 years ago
p0174 is lean, bank 2, (drivers side) could be from vacuum leak, lack of fuel, timing...., when you had the valve cover off, could you tell if the timing chain tennsioner was holding tennsion on the chain??
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Customer reply replied 8 years ago
The tennsioner was holding tennsion on the chain. I replace the mass air sensor and check for vacuum leak. There's no leak. If I choose accept, will you still be able to help me out with this question?
Ford Mechanic: jblair1979, ASE Certified Technician replied 8 years ago
i can, and i do want you to accept, but you do not have to until we fix it....
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Customer reply replied 8 years ago

Fuel pressure is good and there is no vacuum leak. Another thing is when the car is park and I press on the gas, it gets to about 3k RPM and bog out. It will star to shake, but when I drive it, there is no problem getting pass the 3K RPM. Is this usual on a Lincoln?

Ford Mechanic: jblair1979, ASE Certified Technician replied 8 years ago
yes, this is the pcm protecting the engine, there is no need to rev it up that high in nuetral, just a built in safety feature. when you ahd the valve cover off, did you try to re-position the cam caps like i told you, on 12/8/2009?
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Customer reply replied 8 years ago
Yes I did. They didn't move much at all.
Ford Mechanic: jblair1979, ASE Certified Technician replied 8 years ago
did you ever get the oil pressure checked? i dont guess i saw if you posted it...
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Customer reply replied 8 years ago
That's one thing that I forgot to do. Do you have a better picture of the service port?
Ford Mechanic: jblair1979, ASE Certified Technician replied 8 years ago
the one i posted was the best one that i could find. basically you remove the oil pressure sender and install the pressure tester there.
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Customer reply replied 8 years ago

Will this cause an oil leak?

Ford Mechanic: jblair1979, ASE Certified Technician replied 8 years ago
yes it will leak some oil, when you remove the sender, but if your ready with the pressure gauge to screw in, in its place, you should not loose too much.
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Customer reply replied 8 years ago
Non of the auto store has an oil pressure guage. Where can I get one?
Ford Mechanic: jblair1979, ASE Certified Technician replied 8 years ago
you could goto you local mech shop and ask one of the mechanincs for the local tool guy's phone # XXXXX give him a call, or you could try sears, if there is one close by. all the auto parts stores, and none have one to buy, or rent? wow! i am sorry!
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Customer reply replied 8 years ago
They only carry fuel pressure guage.
Ford Mechanic: jblair1979, ASE Certified Technician replied 8 years ago
ok, what about sears, or the local tool guys that goto all the local shops to sell tools? if you cannot find one in either of these possibilities, then you can get online and order one.
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Customer reply replied 8 years ago
Oil pressure was 36. Oil was leaking from the oil pan and I went ahead and replace the gasket. The noise was gone for about two days and came back. The car is also shaking like it's misfireing during idling, but when i drive it, it's drive very smooth. What can I do next?
Ford Mechanic: jblair1979, ASE Certified Technician replied 8 years ago

have you checked the crankshaft dampner? to sse if it is coming apart? also what shape are the motor mounts in? what weight oil are you putting in it?

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Customer reply replied 8 years ago
I haven't check the crankshaft dampner yet. The motor mounts are in good condition. I'm using 5W30. I think that one of the valve is loose, because now as i speed up the noise gets lounder and faster. If that's the case, what is the sequence for the valve adjustment?
Ford Mechanic: jblair1979, ASE Certified Technician replied 8 years ago
there is not a valve adjustment....with the valve covers off, try to move the valves back and forth, see if you have a worn valve guide...
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Customer reply replied 8 years ago

So all the valves are install at the same height? I know in the Honda each valves has a different height.

Ford Mechanic: jblair1979, ASE Certified Technician replied 8 years ago
yes all the valves are all the same height
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Customer reply replied 8 years ago
Could this cause the car to shake like it's mis firing?
Ford Mechanic: jblair1979, ASE Certified Technician replied 8 years ago
if a valve guide was worn, it can actually cause a vacuum leak, and it can allow oil to be sucked into the cylinder, and it can foul the plug.....making it missfire....also, if the valve guide is worn, the valve may not be seating correctly, which can cause a miss....and let me correct my earlier statement; the intake valves are all the same, and the exhaust valves are all the same, so the intake, and exhuast valves are different, as sets, but they are not all individually different.
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Customer reply replied 8 years ago

Do you have any good pictures of the valves, both set?

Ford Mechanic: jblair1979, ASE Certified Technician replied 8 years ago

in or out of the heads? i will have to look around, but let me know specificly what you need, thanks,

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Customer reply replied 8 years ago
in the head.
Ford Mechanic: jblair1979, ASE Certified Technician replied 8 years ago
graphic
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Customer reply replied 8 years ago
If I find that the valve guide is worn, do I have to change out the whole head?
Ford Mechanic: jblair1979, ASE Certified Technician replied 8 years ago
you should be able to take the head to a machine shop, and have them "rebuild" it. they can press out the worn guide, and press in a new one.
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Customer reply replied 8 years ago
ok! I'll get back with you. Thanks!
Ford Mechanic: jblair1979, ASE Certified Technician replied 8 years ago
ok, thanks!
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Customer reply replied 7 years ago
I took the valve cover off and it looks like I'm going to have to take out the cam shafts in order to check the valves. That means that I'm going to have to undo the timing chain to move the cam shafts. What kind of tools do I need to get the timing chain off and is there any precautions that I need to know?
Ford Mechanic: jblair1979, ASE Certified Technician replied 7 years ago

you can search ebay for the ford/rotunda tools, let me get the #'s. do you have the head off?

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Ford Mechanic: jblair1979, ASE Certified Technician replied 7 years ago

here are the special tools to use, once the head is off. be careful when removing the cams, loosen the caps evenly, so the cam does not break.

 

graphic

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Customer reply replied 7 years ago

I had the valve cover off only. I already got everything back together and took it to get a diagnostic check and they said that it's showing miss fire on cylinder 1 thru 4. I don't think all the cylinder would go bad at the same time. I have just replace coil #1 & #4.

 

Let me restate how the knocking is made. When the car is cold during idle, no noise is heard. When the engine gets hot, the knocking noise is heard during idling and it gets lounder as you step on the gas. When the car is in motion and goes about 30mph, there's no noise at all. The car still run smooth. If I need to take the head off I will do it. It's a big job. Do you think with your help, I can do it?

Ford Mechanic: jblair1979, ASE Certified Technician replied 7 years ago
of course we can!! but i am curious now...you stated that they are showing that you have miss fires on 1 whole bank....my 1st inclinations is that the timing is off....which could be spark knock, under a load, but would not necessarily show up under cruise conditions....
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Customer reply replied 7 years ago

Is there a way to check to see if it is the spark knock? I also saw the timing chain plastic guide broken when the valve cover was off.

 

If the timing is off, how do I adjust it and is there any sequence?

Ford Mechanic: jblair1979, ASE Certified Technician replied 7 years ago

well, spark knock is actually something that is caused by carbon build up on the pistons, that gets hot during combustion, and causes pre-detonation=noise=spark knock. you could remove a spark plug and shine a light dn in the hole and see if you can see black build up on the top of the piston.

 

ok, now, with the broken timing chain guides, your timing could be off, ...i thought we had already discussed that eariler?? back on 12/14? you will need to take off the front cover, and replace the timing chain guides, then retest

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Customer reply replied 7 years ago

I did mention it but we didn't really talk about it. I'm guessing the timing chain will have to come off in order to replace the timing chain guides, correct?

Ford Mechanic: jblair1979, ASE Certified Technician replied 7 years ago
yeah. and the front cover. it can be done in the car, but it will take some doing. let me know what you want to do, thanks
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Customer reply replied 7 years ago
Do you have a picture off the front of the timing chain or what it's suppose to look like? Do I need both valve covers taken off as well?
Ford Mechanic: jblair1979, ASE Certified Technician replied 7 years ago
I can get you one tonight, and yes it will be much easier to have them both off.
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Ford Mechanic: jblair1979, ASE Certified Technician replied 7 years ago
here are a few that might help!!graphicgraphicgraphic
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Customer reply replied 7 years ago
On the last image, is the teeth suppose to line up or they are to be in the center of each grove?
Ford Mechanic: jblair1979, ASE Certified Technician replied 7 years ago
i the picture indicates that they are supposed to be off set, not lined up.
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Customer reply replied 7 years ago
Okay, thanks! I'll let you know when I get it open up. It might be a couple weeks before I get to it. I thank you for your patient.
Ford Mechanic: jblair1979, ASE Certified Technician replied 7 years ago
no problem
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