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Engine 'ticking'

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Old Feb 19, 2006 | 09:52 PM
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Default Engine 'ticking'

My 73 L-82 is 'ticking' again. Last summer I had a 'ticking' start and a small loss of power. In checking the engine I had problems with lack of compression and very high leakdown in cylinder #4. Appeared to be the intake valve leaking. After 'adjusting' the valves on #4 cylinder everything was ok. It has run fine al Fall. I either had some carbon build up on the combustion chamber head or a weak lifter, or so I thought. Driving home from work Friday the 'ticking' returned but much louder and with more power loss.

If the lifter is bad, my first guess, should I replace all of the lifters or just the bad one? The engine was rebuilt about 3000 miles ago/5 years ago.

Roger
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Old Feb 19, 2006 | 11:31 PM
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Go through the adjustment process on all your valves. If the ticking persists look for other noise sources.
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Old Feb 19, 2006 | 11:46 PM
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could be a lifter, could be an exhaust leak
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Old Feb 20, 2006 | 12:02 AM
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Originally Posted by GDaina
could be a lifter, could be an exhaust leak
or maybe a bomb.
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Old Feb 20, 2006 | 12:17 AM
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Originally Posted by 71rdster
Go through the adjustment process on all your valves. If the ticking persists look for other noise sources.
I have what sounds like noisy rocker (roller rockers and roller cam have less than 700 miles). Shop was able to quiet down one on other side by adjusting... I would like to do this myself...what is the proceedure?
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Old Feb 20, 2006 | 09:02 AM
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A cheap/easy suggestion is to try a heavier weight oil....
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Old Feb 20, 2006 | 09:15 AM
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Originally Posted by GDaina
could be a lifter, could be an exhaust leak


Check the exhaust gaskets and if all the header bolts are tight...
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Old Feb 21, 2006 | 06:26 PM
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Took the valve cover off today. I don't have to worry about the lifters. The #4 cylinder intake valve spring is in three pieces. Now to figure out the condition of the valve: looking with my boroscope and a leak down test is on the list for this week's evenings. New spring set on order.
Roger
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