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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

Truck Sat, Now It Knocks

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Old May 22, 2006 | 11:28 AM
  #1  
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From: Coleman, Wisconsin
Truck Sat, Now It Knocks

I had my truck parked in my friends shed for only two days while we were doing body work on it and I started it up last night to charge the battery, and there was a horrible knocking that sounded like someone banging a hammer on sheet metal. It did not do this when I parked it. Sounds like its coming from one of the front valves. Is there anything I should do before I drive it again or am I going to have to do my Windsor swap way before I wanted to?

It's just one thing after another....
 
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Old May 22, 2006 | 11:38 AM
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Did you check to see if you still had oil? Someone could have drained it out to try to mess with either you or him. If you have oil, hook up a good mechanical gauge to see what kind of oil pressure you have. If you don't have a guage or don't want to get one, pull the valve cover off and fire it up. If you have good pressure, oil should be squirting when it's running. The other advantage to this is you can see if the valve springs are broken or not.

Another thing to wonder is, did your friend take your truck out and rev the snot out of it?
 
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Old May 22, 2006 | 11:41 AM
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One other thought, are you sure it's coming from the engine? It could be something hitting the fan when you started it. Like I said, just a thought.
 
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Old May 22, 2006 | 11:41 AM
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The gauge in the dash says I have good pressure, but I should get a good one. The only time he drove it was in the barn to move his truck where mine was parked. I wasn't there so I wouldn't know how he drove. I'm still kind of blaming him for it since he was the last to drive, he said he'd help change motors. This still sucks....
 
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Old May 22, 2006 | 03:06 PM
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.... The fan was the first thing I checked since I had my headlight bezels laying on the engine. I'll head back there tomorrow, start it, give it a better look over and see what happens. That truck has been known to fix its own problems before.
 
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Old May 22, 2006 | 09:27 PM
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It sounds like a sticky lifter. I'd let it warm up and see if it changes.
 
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Old May 23, 2006 | 04:23 AM
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There are knocks and then there are ticks.
 
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Old May 23, 2006 | 03:36 PM
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Well, I went over there today after school to check out the progress. The guy said he drove it up to the house to wet sand it and said the knock, ting, whatever you'd call it was completely gone. I guess it's true, the truck fixes itself. haha
 
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Old May 23, 2006 | 04:04 PM
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Well, if it does it again, take a long screwdriver and place one end on the engine where you think the sound is coming from and put your ear on the other end and that could pin-point the location of the sound, (acts like a stethoscope). Just be careful of ANY MOVING PARTS!!!!!

As to what it could be, if you drive your truck everyday but parked it for two days without starting it, the oil could have drained out of the top and the filter and back into the engine.
 
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