Loud engine knock/$$$ noise
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Senior User
Joined: Aug 2005
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From: Around
Loud engine knock/$$$ noise
Well, it seems I only come on here with problems. Last one was a dead alternator and now it seems much worse.
I was driving back from advanced auto picking up my new alternator, and as I was driving back I suddenly heard a loud knock/engine noise.It was RPM dependant. It resembled the sound of an open header/exhaust manifold. Thats the best I could describe it. It was definately coming from the right bank of cylinders. The motor still ran, but seemed to be a little down on power, but I turned it off as soon as I could and pulled off the road.
I had a very very light knock before this, and didnt pay to much to it, which know I am regretting.
Its a 99' with approx 108,000 on it.
I am scared knowing what it will be...Any ideas?
Thomas
I was driving back from advanced auto picking up my new alternator, and as I was driving back I suddenly heard a loud knock/engine noise.It was RPM dependant. It resembled the sound of an open header/exhaust manifold. Thats the best I could describe it. It was definately coming from the right bank of cylinders. The motor still ran, but seemed to be a little down on power, but I turned it off as soon as I could and pulled off the road.
I had a very very light knock before this, and didnt pay to much to it, which know I am regretting.
Its a 99' with approx 108,000 on it.
I am scared knowing what it will be...Any ideas?
Thomas
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Joined: Jul 2002
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From: Long Island USA
First, try to figure out if it's exhaust noise.
Does it get REALLY loud when you step on the gas, and then nothing coasting?
Or is it doing it no matter if you're on the gas or off?
Lastly, does it come with acceleration and cruise, and disappear when coasting, and come back at idle?
Does it get REALLY loud when you step on the gas, and then nothing coasting?
Or is it doing it no matter if you're on the gas or off?
Lastly, does it come with acceleration and cruise, and disappear when coasting, and come back at idle?
Thread Starter
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From: Around
yea, I was a little vague. I am pretty sure it wasnt exhause noise, but I turned it off pretty much right when I heard it.I checked for an exhaust leak, but I didnt see anything(but was on the side of the highway so I didnt look all that closel)
I restarted it for about 30 sec. while I was parked and tried to figure out what it could be. It was definately on the right bank of cylinders, occured during coasting/throttle/and idling. As long as the motor was on/the noise was present. It was dependant on RPM. There also seemed to be some sort of fluid/looked like oil right near where the noise was present(near spark plugs/intake manifold/valvecover) Not sure if it was there before or not.
I will also mention that if I let the truck sit for an extended period,like a week, I would hear a loud surge/dull "pop" right when I started. It would return to normal warmup idle in about half a second.
I will say the truck is still relatively new to me, and my engine knowledge is lacking.
I will guess that the sound was coming towards the rear of the engine/ maybe cylinders 8,9,10
I restarted it for about 30 sec. while I was parked and tried to figure out what it could be. It was definately on the right bank of cylinders, occured during coasting/throttle/and idling. As long as the motor was on/the noise was present. It was dependant on RPM. There also seemed to be some sort of fluid/looked like oil right near where the noise was present(near spark plugs/intake manifold/valvecover) Not sure if it was there before or not.
I will also mention that if I let the truck sit for an extended period,like a week, I would hear a loud surge/dull "pop" right when I started. It would return to normal warmup idle in about half a second.
I will say the truck is still relatively new to me, and my engine knowledge is lacking.
I will guess that the sound was coming towards the rear of the engine/ maybe cylinders 8,9,10
Last edited by ToaDisco; Oct 1, 2005 at 07:51 PM.
Post Fiend
Joined: Jan 2002
Posts: 5,859
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From: USA
Did you by chance smell gas ? when running ?
Look for a blown sparkplug then. passenger side last one back!
Did you pull the dip stick chk oil for water/antifreeze smell
Either way sounds like bad news .
Good luck
Rich
Look for a blown sparkplug then. passenger side last one back!
Did you pull the dip stick chk oil for water/antifreeze smell
Either way sounds like bad news .
Good luck
Rich
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From: Around
It sounded like exhaust, as I have broken the flange that attaches the manifold to the exhaust before on my offroad rig, and it sounded similar. But I didnt visually check all that great(was in nice clothes on the side of the highway) I will pray that is the problem, since someone said it was somewhat common.
Could be a blown sparkplug as well. It is at the dealer now and well see what they say. I would like to tackle the repair myself, but who knows
Thomas
Could be a blown sparkplug as well. It is at the dealer now and well see what they say. I would like to tackle the repair myself, but who knows
Thomas
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Senior User
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From: Around
Well, Ford says the #1 sparkplug blew. They est. total cost to repair would be around 3300 for parts/labor!! I am not going to pay that much on a truck that I got for 12K unless it gets me a new motor.
Have any of you done this before? They said you have to get to it from the #2 cylinder ect... Seems kind of a pain. I may start doing my research and seeing if I can save myself some $$$.
Any tips/advice?
Thanks
Have any of you done this before? They said you have to get to it from the #2 cylinder ect... Seems kind of a pain. I may start doing my research and seeing if I can save myself some $$$.
Any tips/advice?
Thanks
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Post Fiend
Joined: Jun 2003
Posts: 5,643
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From: NE Texas
Bad deal. Sorry to hear about your troubles.
Here's how we fix them:
http://www.timesert.com/
And don't let them tell you it won't work! Good luck and let us know how it turns out.
BTW - How long have you had the truck?
Here's how we fix them:
http://www.timesert.com/
And don't let them tell you it won't work! Good luck and let us know how it turns out.
BTW - How long have you had the truck?
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Thread Starter
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Senior User
Joined: Aug 2005
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From: Around
I've had the truck for about 4 months... I am kind of dissapointed, but I guess thats what you get for buying a used truck with high miles. I had the impression though the V10 was a pretty reliable motor. I guess I am unlucky.
I will check out your link... I would like to give it a shot, especially being a college student on a limited budget. I could keep it fueled, but 3300 is out of question.
Heres the parts list they quoted me:
1 left hand cylinder head:1500$
5 gaskets
1 head bolt
1 ignition coil
and some other misc. things like oil, antifreeze ect...
and 16 hrs of labor.
Check your spark plugs.
EDIT: just checked out your link, sounds interesting...may have to give that a shot, sounds reasonably simple compared to the alternative. Any comments about the procedure?
I will check out your link... I would like to give it a shot, especially being a college student on a limited budget. I could keep it fueled, but 3300 is out of question.
Heres the parts list they quoted me:
1 left hand cylinder head:1500$
5 gaskets
1 head bolt
1 ignition coil
and some other misc. things like oil, antifreeze ect...
and 16 hrs of labor.
Check your spark plugs.
EDIT: just checked out your link, sounds interesting...may have to give that a shot, sounds reasonably simple compared to the alternative. Any comments about the procedure?
Last edited by ToaDisco; Oct 3, 2005 at 05:08 PM.
Post Fiend
Joined: Jun 2003
Posts: 5,643
Likes: 8
From: NE Texas
Originally Posted by ToaDisco
I've had the truck for about 4 months... I am kind of dissapointed, but I guess thats what you get for buying a used truck with high miles. I had the impression though the V10 was a pretty reliable motor. I guess I am unlucky.
I will check out your link... I would like to give it a shot, especially being a college student on a limited budget. I could keep it fueled, but 3300 is out of question.
Heres the parts list they quoted me:
1 left hand cylinder head:1500$
5 gaskets
1 head bolt
1 ignition coil
and some other misc. things like oil, antifreeze ect...
and 16 hrs of labor.
Check your spark plugs.
EDIT: just checked out your link, sounds interesting...may have to give that a shot, sounds reasonably simple compared to the alternative. Any comments about the procedure?
I will check out your link... I would like to give it a shot, especially being a college student on a limited budget. I could keep it fueled, but 3300 is out of question.
Heres the parts list they quoted me:
1 left hand cylinder head:1500$
5 gaskets
1 head bolt
1 ignition coil
and some other misc. things like oil, antifreeze ect...
and 16 hrs of labor.
Check your spark plugs.
EDIT: just checked out your link, sounds interesting...may have to give that a shot, sounds reasonably simple compared to the alternative. Any comments about the procedure?
Posting Guru
Joined: Dec 2004
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Interesting info Big Orn . I use Heli coils all the time at work but this site claims that timeserts are even better.
Most of the chip refiners I change plates on come with heli coils for the fasteners.
Refiner plates are under heat and pressure and coupled to 15000 HP electric motors
and heli coils stay put under these conditions.
When we change the plates by removing the three 5/8 " diameter SS capscrew we scrape down the backing plate and if the heli coils have backed out of the hole enough to feel them with a scraper, we remove them and put in new heli coils.
Toa Disco , good luck getting a reasonably priced fix for this.
Most of the chip refiners I change plates on come with heli coils for the fasteners.
Refiner plates are under heat and pressure and coupled to 15000 HP electric motors
and heli coils stay put under these conditions.
When we change the plates by removing the three 5/8 " diameter SS capscrew we scrape down the backing plate and if the heli coils have backed out of the hole enough to feel them with a scraper, we remove them and put in new heli coils.
Toa Disco , good luck getting a reasonably priced fix for this.
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Senior User
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From: Around
The timeserts seem like a decent alternative to head replacement. I hope the head is still salvagable to use the timeserts. I searched the site and this is a pretty common problem it seems. I wish I had caught this... as I did here the ticking, but delayed it until I was back home with tools/garage ect... I am kicking my self now. I am hoping I can do the repair without taking the heads off... I think I read that it was possible, just have to clean up all the metal shavings ect...
Thanks for all the advice, keep it coming. I could use the encouragement.
Thomas
Thanks for all the advice, keep it coming. I could use the encouragement.
Thomas
Post Fiend
Joined: Jun 2003
Posts: 5,643
Likes: 8
From: NE Texas
Originally Posted by ToaDisco
The timeserts seem like a decent alternative to head replacement. I hope the head is still salvagable to use the timeserts. I searched the site and this is a pretty common problem it seems. I wish I had caught this... as I did here the ticking, but delayed it until I was back home with tools/garage ect... I am kicking my self now. I am hoping I can do the repair without taking the heads off... I think I read that it was possible, just have to clean up all the metal shavings ect...
Thanks for all the advice, keep it coming. I could use the encouragement.
Thomas
Thanks for all the advice, keep it coming. I could use the encouragement.
Thomas