Piston Stop and Big Problem

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Jan 8, 2025 | 05:53 PM

pfeathers

Thread Starter

5th Wheeling

Joined: May 2014

Posts: 27

Likes: 4

From: Anacortes

Piston Stop and Big Problem

My 292 y block on my 1960 Ford F350 does not have clear markings on the crankshaft pulley. I decided to use a piston stop to find my TDC. It was working great, I was moving clockwise and then counter and finding my two marks. I had gone forward and then reverse several times, checking my position on the pulley. At one point while rotating the crankshaft I felt some resistance, I thought it was just compression becasue I was a long way from where TDC should be. So, I muscled it through. I finished my marks and tried to backout the piston stop bolt which should have been easy but the bolt could not be removed by hand. Cleary something had come in contact with the piston stop, there was a nick on the bolt threads I discovered after I removed it. I put the truck back together and started it up and I have noticeable ticking noise, sound ike from #1 cylinder. I am assuming the piston stop came in contact with a value. Any ideas?

Jan 9, 2025 | 10:46 AM

f5fordgirl

Fleet Mechanic

Joined: Apr 2012

Posts: 1,275

Likes: 134

Pull that valve cover, most likely if a valve was encountered, a push rod will be bent, replace it and check compression, if good, you may have lucked out and not bent a valve.