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Old 12-22-2010, 10:37 PM
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Cold Start Tick?

I know there were some threads started on noisy lifters. But those were once the vehicle was warmed up. Mine is the oposite. It just started doing this, but if the motor sits overnight it will tick pretty good when you first start it up. Once it quits you can run the car on and off the rest of the day and it's fine. Only when it sits overnight it ticks on start up. It's a new motor with maybe 500 miles on it. I was thinking valves may need some adjustment, but just wanted some ideas first. Info Appreciated.

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Old 12-22-2010, 11:33 PM
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Adjust the valves first. If the valve train was new and in some cases even used, new wear patterns create more clearance as they wear in. Years ago I installed fresh heads on my small block, adjusted the valves, everything was fine. I got out of the driveway and heard countless rockers go to ticking. Yanked the valve covers back off, readjusted the rockers and didn`t have to fool with it again afterwards.
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Old 12-23-2010, 07:22 PM
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What engine is it? A lot of late model stuff does that from the factory
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Old 12-23-2010, 08:52 PM
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Its a 396 bored 40 over.
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Old 12-24-2010, 06:33 AM
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I have a 02 Silverado with the 5.3 and mine does it on cold start up also. From what I've heard it's pretty common on these.
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Old 12-24-2010, 07:22 AM
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Probably just oil draining from the lifters overnight, in which case, the tapping you're hearing is excessive valve clearances until the lifters fill-up with oil again (shouldn't take more than a few seconds).
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Old 12-24-2010, 08:06 AM
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Make sure the oil filter being used has a anti-drain back valve.
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Old 12-24-2010, 09:44 AM
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It seems to be better now. I'll have to check the filter also. I put a k&n oil filter on it last time I change the oil.
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Old 12-24-2010, 01:36 PM
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Quote:
Originally Posted by carnahan
I have a 02 Silverado with the 5.3 and mine does it on cold start up also. From what I've heard it's pretty common on these.

i've ot an 00' that USED to do that untill i changed head gaskets....
leaked coolant right down onto the top of #2 exhaust lifter...clattered to beat hell cold..
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Old 01-13-2013, 06:17 AM
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Cold start tick (slapping valve)

I usually do a oil change with a fram double guard filter PH-5 on a small block 350 with 5 qts of 10w -30 oil....walmart **** ..fine. But I thought I would be smart and do a oil change here in Arizona during the winter @ 10 degrees in winter this time of year and do 4 qts of oil and 1 qt of lukas crap that claimed it was awesome in cold starts.....wrong as it gave me a valve problems the clank & bang I never heard until ???. I started lukas. An engine is like your body when you do something different that it don't like it talks crap......
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Old 01-13-2013, 07:20 AM
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New engine "valves clank..Loud"

The best thing in your case would be to pull the valve cover off "cold" on the bank you know the valve is clanking and fire the vehicle up and pinpoint the valve and adjust it while running...lol enjoying the oil spurts. back off the locknut at the lifter and adjust the screw until you lose the slap...then back it off 1/8 " and tighten the locknut and you are done. Turn off engine replace valve cover and or replace cover gasket etc. If you are dealing with multiple clapping take it in for all 18 valves to be adjusted. I have found as most rebuilt engines or new ones...except turnkeys are half ***. I have a 1/2 ton 1982 chev k-10 with a 355 small block with edelbrock intake & 655 cfm carb rebuilt by a friend and spent months getting it right...like a person each engine has it's own personality.
Be patient as it will work for you.

Greg.
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Old 01-13-2013, 10:22 AM
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It is usually in the rocker arm retaining system, if the lifters are new. I am not familiar with BB Chevy lifters, but the 1987- 1991 SB Chevy adjustable short travel hydraulic roller lifters (GM 5234890) are more noisy on cold start up than the 1992 - 1995 non-adjustable net-lash long travel lifters (GM 5234670). In 1996 GM redesigned the rocker arm retaining system and used short travel non-adjustable lifters (GM 17120090). The BB Chevy lifters and SB Chevy lifters are the same design internally and the only difference I can think of is the location of the oil feed holes and oil bands.

GM corrected the problem with the 1992-1995 non-adjustable net-lash lifters. In 1996, GM started using a different type rocker arm retaining system and used non-adjustable short travel lifters. The only adjustment to the 1996 - 2012 lifter pre-load was to change the push-rod length.
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Old 01-14-2013, 05:14 PM
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Quote:
Originally Posted by 396chevelle View Post
I know there were some threads started on noisy lifters. But those were once the vehicle was warmed up. Mine is the oposite. It just started doing this, but if the motor sits overnight it will tick pretty good when you first start it up. Once it quits you can run the car on and off the rest of the day and it's fine. Only when it sits overnight it ticks on start up. It's a new motor with maybe 500 miles on it. I was thinking valves may need some adjustment, but just wanted some ideas first. Info Appreciated.

Thanks..I think I got it worked out

Greg.
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Old 01-14-2013, 05:17 PM
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Quote:
Originally Posted by Silverback View Post
What engine is it? A lot of late model stuff does that from the factory
350 5.7 V-8 I've had a lot of help with members and I think I got right now. Appreciate your help.
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Old 01-14-2013, 05:20 PM
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cold start tick

Quote:
Originally Posted by 1ownerT View Post
Make sure the oil filter being used has a anti-drain back valve.
It is a anti drain back...thanks for pointing that out

Greg.
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