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Lifter Tick

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Old 03-19-2018, 11:59 PM
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Default Lifter Tick

does anyone think this if lifter tick? Also when I pop the valve covers to check the rocker arms for play from a bad lifter does the piston need to be at TDC? I know for sure there’s an exhaust leak at the headers and cat gasket. Car showed misfire on cylinder 1 then went away a couple days later. 1998 Z28 stock with Borla muffler
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Old 03-20-2018, 03:36 AM
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Try a new set of plugs and a oil change first....
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Old 03-20-2018, 08:13 AM
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Just did oil change, plugs, and wires
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Old 03-20-2018, 10:43 AM
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Try 10w40 oil
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Old 03-20-2018, 11:07 AM
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Is this the normal sewing machine/LS tick? Will thicker viscosity just quiet it down? Don’t want to harm the motor. Has 150,000 miles
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Old 03-20-2018, 11:47 AM
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Sounds like a rod knock to me.
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Old 03-20-2018, 12:28 PM
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Originally Posted by Dylanlars
? I know for sure there’s an exhaust leak at the headers and cat gasket. [/left]
fix the exhaust leak and see if tick noise goes away
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Old 03-20-2018, 04:46 PM
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Originally Posted by willieboy240
Sounds like a rod knock to me.
I agree . Could try unplugging the injector harnesses / spark plugs one at a time on each cylinder checking if the knock goes away or changes in sound .
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Old 03-20-2018, 05:25 PM
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That's no rod knock I ever heard. Sounds just like my 155k 01 WS6. EXACTLY. I'd say its time for lifters.
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Old 03-20-2018, 06:41 PM
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Try thicker oil and if it goes away you can go a bit longer, if it's still there you need to fix it quick. That's if it is lifters. Videos without out good mics and sound edited are pretty useless for trouble shooting.
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Old 03-20-2018, 10:01 PM
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If I want to pull the valve cover and check for play in the rocker arms from a collapsed lifter does that piston need to be at top dead center?
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Old 03-20-2018, 11:38 PM
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Not TDC. The lifter needs to be on the base circle. Turn the crank until the exhaust valve just moves on that cylinder to check the intake and then move it again until the intake is half way closed and check the exhaust.
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Old 03-20-2018, 11:48 PM
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If your motor is full of oil, drain it a quart then go to wal mart and purchase 1qt of Lucas oil stabilizer.
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Old 03-21-2018, 08:11 AM
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Originally Posted by Crf450r420
Not TDC. The lifter needs to be on the base circle. Turn the crank until the exhaust valve just moves on that cylinder to check the intake and then move it again until the intake is half way closed and check the exhaust.
Thanks! And I can just put a breaker bar on the front of the crank pulley to rotate the whole assembly?
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Old 03-21-2018, 10:15 AM
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Yes, with a 24mm or in pinch 15/16" socket
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