engine knock

[brucef250]

i have a 1972 f250 with a 360 c6,, it has been in my garage for about 4 years...just havent had time to get it out and drive it ...to nice to use as a every day driver...i have started it on a regular basis..it runs great has 87000 miles on it...pulled the moter detailed it and under the hood this past winter...looks great...finally got it out to drive and i hear a knock .... every one who i ask said it is a wrest pin ...why would this start now ??? could it be from setting so long ?? any ideas ??? i dont want to pull the moter and rebuild it .. unless i have to ...help me if you can thanks bruce

[cep62]

One way to diagnose a wrist pin is to short out a cylinder at a time (or pull a plug wire)
and listen for a change in the knock.
If it double ticks it 's probably a wrist pin ,otherwise it could be a lifter or that famous FE exhaust tick.

[Dragon]

Rarely do pressed in pins (stock 360) have wrist pin problems. My truck got down to 1 quart of oil last year on a 300 mile highway run due to Jiffy lube and the bottom still does not tick and I have over 200000 but my tappets and cam is shot and noisy.

[george worley]

It could be the arm on the fuel pump, the arm may be worn or the spring is weak.Use a long rod or a length of heater hose and check to see if the noise is in the bottom end or in the valve train.

[brucef250]

thanks for the help ...i am going to check it out this weekend... thanks again bruce