4000 tick

DGK · Nov 21, 2015

4000 ford with 172 4cyl, Has a tick that sounds like a loose tappet but it comes and goes. Set valves twice now but tick still comes and goes. Thanks for any help

cyljock · Nov 21, 2015

(quoted from post at 01:37:17 11/22/15) 4000 ford with 172 4cyl, Has a tick that sounds like a loose tappet but it comes and goes. Set valves twice now but tick still comes and goes. Thanks for any help

I was chasing what I thought was valve adjustment issues on my 172 diesel. I later found out the noise was coming from extremely worn camshaft timing gear teeth. Just food for thought...

Royse · Nov 21, 2015

Sometimes when the rockers get worn they will set down over
the valve and "tick" when they pull off of the valve.
A feeler gauge fits on the flat part, not up in the worn part.
Resurfacing or replacing the rockers cures it.
I'm not saying that's your issue, just an observation.

showcrop · Nov 22, 2015

I had a loose sleeve in a 960 once, it would go up an down slightly and make a slight ticking noise but not all the time. I had to pull the head and glue them in.

souNdguy · Nov 23, 2015

presence or absence of a load on the hyds make a difference?

ndbjda · Nov 23, 2015

Just finished working on one. Had a tick almost a knock turned out to be the cam retainer had one loose bolt and had cracked by the other bolt. That let the cam gear come up against the ears on the governor. Noise was almost gone when you pushed in the clutch.

4000 tick

DGK

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cyljock

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Royse

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showcrop

Well-known Member

souNdguy

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ndbjda

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