What did I do
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What did I do
I have a 2000 ford f 150 4x4 with the 5.4 triton v8 with 326,000 miles on it. It has run great no major problems and then the air intake manifold blew out. So we got a new intake for it and when we took the old one off we stuffed rags in all the ports to keep crap out of the motor while we cleaned everything up and then we vaccumed up what we could and installed the new manifold back on and when we got it all back together and got it started running it sounded like the motor was going to fly apart. It was beating and a banging and every kind of noise you can imagine. It made all those noises for a little while then it slowly got quieter and then i heard what sounded like something snapping and then it quite. But it had a real bad miss. we got to checking coils and pulled some of the plugs and we found one of the plugs when we pulled it the end of it had been totally mashed and bent what looked like the piston had beat the crap out of it. We looked down in the port on the piston and couldnt find or see anything wrong with the piston. But the motor still has a loud pecking noise in the top of the motor. Can anyone offer any suggestions?
Lead Driver
Joined: Sep 2006
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Respectfully Richard, you know what happened and what has to be done now.
With the mileage it has, it's time to treat it with some loving care by removing the head or both, seeing what damage it has, then making a decision on what to do.
Good luck with it.
With the mileage it has, it's time to treat it with some loving care by removing the head or both, seeing what damage it has, then making a decision on what to do.
Good luck with it.
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what would have caused it though? The guy working on it says the top of the piston looks fine and he is going to pull the valve cover and see if it threw a rocker or something like that. I have been reading some stuff online and from what im reading it could be anything that has happened to it. I want to know what caused it so I know and have the experience to know in the future.
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The truck ran great other than getting the water down in the plug port and even with that many miles on it it ran like a brand new one. how all of a sudden did it just do what it did after replacing the air intake. It didnt make a noise one before it was tore apart.
Lead Driver
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Using just a little common sense; whatever it is it was small enough to get through an open intake valve the first time the motor was cranked.
Since it smashed a spark plug tip, now you have the effects of the Ceramic plug center insulator denting and causing distruction on the Alum head and the Alum piston crown along with the original material that got in.
Ceramic chips could jamb and score the cylinder wall as well.
Why is there a hesitation to understand once the plug was found to be distroyed that the head has to come off to make the determination.
It's an unfortunate situation any body could have gotten into but it is what it is.
Trying to talk one's way around it is foolish at this point.
Since your on the outside looking in, what are you going to do about it?
You have 3 options.
Let the truck set, tear the motor down for proper repair, or replace the motor.
Good luck.
Since it smashed a spark plug tip, now you have the effects of the Ceramic plug center insulator denting and causing distruction on the Alum head and the Alum piston crown along with the original material that got in.
Ceramic chips could jamb and score the cylinder wall as well.
Why is there a hesitation to understand once the plug was found to be distroyed that the head has to come off to make the determination.
It's an unfortunate situation any body could have gotten into but it is what it is.
Trying to talk one's way around it is foolish at this point.
Since your on the outside looking in, what are you going to do about it?
You have 3 options.
Let the truck set, tear the motor down for proper repair, or replace the motor.
Good luck.
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The we is a friend of mine who is a mechanic that was doing the job for me. I was mostly watching and helping what i could. The plug wasnt a ceramich plug I don't think it was a bosh platinum plug. I agree with you bluegrass and believe the motor is going to have to be tore apart now. I am just curious to find out what happened and how it happened just for my own curiousity. It does suck because I dont have the money to replace the motor. I was hoping that the new intake was going to fix it and apparently the work done to it has managed to cause more problems then what i started with.
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Tuned
Joined: Jul 2009
Posts: 432
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From: Lowell, MI
According to Autozone, you will have at least another $250 into a head gasket.....but if nothing else is damaged,it shouldn't be that expensive to get going again. Take Bluegrass' advice and be sure to thoroughly inspect the cylinder for anything that could cause more damage down the road.....
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As soon as I get a place to work on the truck, the heads are comming off of it. The tapping noise in the top of the motor is in the same cylinder as the plug that we took out that was smashed. We scoped it and it looked like something had been in there rolling around on top of the piston. The piston doesnt look damaged but you can see where something was in there. We are pretty sure that it has bent a valve so now both heads will be comming off and redone. I guess I will also do anything else to the motor that can be done to it while it is broken down.
Lead Driver
Joined: Sep 2006
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Richard, now you getting with the show.
I was going to suggest a scope to look in but their not available too easy but a store like Harbor Frieght does have them but don't know how good they are.
Yes, by running the motor with something in the cylinder the valves would be forced open against it and can bend the stem, cause missfire and noises.
Sorry about the misfortune.
.
I remember not all that long ago a chap did a full rebuild and lost it by not torquing the cam gear.
Came to ask for help and we quickly came to the conclusion he did something wrong.
He was a good egg about it but it still hurts to have these things happen.
.
The bottom line when doing things is to be awhere of what could happen and to always stop a job at a 'safe' stopping point which means you always complete an assembly action before taking a break etc. so you never have to wonder if you did or not after the fact and have it come apart.
Good luck.
I was going to suggest a scope to look in but their not available too easy but a store like Harbor Frieght does have them but don't know how good they are.
Yes, by running the motor with something in the cylinder the valves would be forced open against it and can bend the stem, cause missfire and noises.
Sorry about the misfortune.
.
I remember not all that long ago a chap did a full rebuild and lost it by not torquing the cam gear.
Came to ask for help and we quickly came to the conclusion he did something wrong.
He was a good egg about it but it still hurts to have these things happen.
.
The bottom line when doing things is to be awhere of what could happen and to always stop a job at a 'safe' stopping point which means you always complete an assembly action before taking a break etc. so you never have to wonder if you did or not after the fact and have it come apart.
Good luck.
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we have come to the conclusion that something had to have been inside that new intake. Like i mentioned before he took every precaution that you c ould think of and he has changed twenty to thirty of them before with no problems. But it is what it is and now like you said it just has to be fixed no matter what it is that has to be done.
Tuned
Joined: Mar 2009
Posts: 264
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From: bozeman
I ran across a head gasket set with new bolts possibly a set of timing chain housing gaskets for $100 on line can't remember exactly where
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