Ticking in front cylinder

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kdiqq
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Ticking in front cylinder

Post by kdiqq » Tue Dec 19, 2017 7:59 pm

For the past several months, I've had a slight ticking coming from the front cylinder when hot. It sounds like the typical rocker chatter from the engine, but just a *hair* louder from the front cylinder. As I rev the engine, it becomes slightly more pronounced. If I hold a screwdriver to my ear, it is noticeably louder on cyl 1 valvecover. Just a light metallic tap, but loud. I adjusted the valves on all cylinders, but did cyl 1 a hair tight to see if it made a difference and it did not. Rocker shafts had no slop. What should I be checking next?
1977 Austrian 710M

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rmel
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Re: Ticking in front cylinder

Post by rmel » Tue Dec 19, 2017 8:40 pm

Worth trying a compression test, any significant difference between #1 and the other jugs might
imply a ring problem. Also get an endoscope down the bore and inspect the cylinder walls.
Other than that your kind'a left with exploratory surgery or monitoring the situation to see if it
progresses.
Puller: 710K 2.7L EFI
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kdiqq
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Re: Ticking in front cylinder

Post by kdiqq » Wed Dec 20, 2017 7:14 am

rmel wrote:Worth trying a compression test, any significant difference between #1 and the other jugs might
imply a ring problem. Also get an endoscope down the bore and inspect the cylinder walls.
Other than that your kind'a left with exploratory surgery or monitoring the situation to see if it
progresses.
Crap I totally forgot I have an endoscope! I guess it's a good time to swap plugs. I typically use the starter for compression tests. Any reason on this engine that I shouldn't?
1977 Austrian 710M

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rmel
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Re: Ticking in front cylinder

Post by rmel » Wed Dec 20, 2017 10:16 am

Yup, crank the engine with the starter. Just 2 or 3 rev's for a peak reading.
Again this won't be definitive but might lead to a clue. Oh, and I never tried
this before, but you could put a mirror on the endoscope head and look back
at the valves, when open a peak at the valve seats -- just for yuks. Don't
expect you will see anything but process of elimination.
Puller: 710K 2.7L EFI
Follower: Sankey MK 3, 3/4 Tonne
Driver: Ron // KO0Q

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audiocontr
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Re: Ticking in front cylinder

Post by audiocontr » Wed Dec 20, 2017 7:46 pm

Adjust the valve lash? Too loose?
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undysworld
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Re: Ticking in front cylinder

Post by undysworld » Wed Dec 20, 2017 7:48 pm

kdiqq wrote:I adjusted the valves on all cylinders. What should I be checking next?
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audiocontr
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Re: Ticking in front cylinder

Post by audiocontr » Thu Dec 21, 2017 5:37 am

Missed that =)
1973 712m
(2) 1968 Haflingers 1 For Sale
1978 GMC Palm Beach
1979 Mini Ranger For Sale
1986 Corvette For Sale
2001 F250 Diesel and trailer
Company Cars
2017 MKT
2018 F-150

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