valve tap

joshuapc · 02-25-2008, 11:31 AM

i have a 90 pickup with a 22re. theres a weird tapping sound that seems to be coming from m valve train. the noise increases with higher rpms. i tried the lucas oil stabilizer, it helped a little. any suggestions on how i should approach this problem?

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MMA_Alex · 02-25-2008, 11:33 AM

have you adjusted the valve lash? do a search on valve adjustment, and you'll find a ton of info.

joshuapc · 02-25-2008, 01:44 PM

no i havnt adjusted it yet. just lookin for sum suggestions before i take apart my engine. would any body recommend some other mods or sources of the problem?

Targetnut · 02-25-2008, 02:00 PM

If you think you have a valvetrain noise the first thing to do is to check the valve clearances and set them to spec.

While you have the valve cover off you can inspect the timing chain and guides

And when it goes back together, don't overtighten the valve cover nuts as this will make the valves noisey.

jason191918 · 02-25-2008, 02:16 PM

Fuel Injectors?

keithguts · 02-25-2008, 02:57 PM

Quote:

Originally Posted by jason191918

Fuel Injectors?

I 2nd that as this was my problem. I also no that if the valve covers are to tight, it will cause tapping as well.

joshuapc · 02-25-2008, 05:06 PM

thanks a lot for everyones suggestions! damn things irritating!

joshuapc · 02-25-2008, 07:28 PM

what do you mean by fuel injectors? they make a tapping noise?

turner01 · 02-28-2008, 09:11 PM

when you guys say that over tighting the valve cover bolts can cause taping...how does that work? just curious

MMA_Alex · 02-29-2008, 02:02 PM

the rocker arms tap on the shield thing inside of the valve cover.

02-25-2008, 02:00 PM	#4 (permalink)
Targetnut Registered User Join Date: Jul 2005 Location: Manassas, VA Posts: 554	If you think you have a valvetrain noise the first thing to do is to check the valve clearances and set them to spec. While you have the valve cover off you can inspect the timing chain and guides And when it goes back together, don't overtighten the valve cover nuts as this will make the valves noisey. __________________ Targetnut don't talk about it, just do it! Precision Import Service '93 2WD 22RE, Ported w/os valves, custom intake manifold, crane cam,Megasquirt, 295cc injctrs, Supra fuel pump, adj fuel pres reg, 70mm throttle, LCE header, V6 Taco cat, 14lb flywheel, Kevlar clutch, W58 and short shifter, 4.10 gears w/Truetrac, drop spindles and blocks, 245/50-16 Yokos on 16x8 wheels, 4WD fenders, bumper, and valence, skinned tailgate

02-28-2008, 09:11 PM	#9 (permalink)
turner01 Registered User Join Date: Jan 2008 Location: Eugene, Oregon Posts: 49	when you guys say that over tighting the valve cover bolts can cause taping...how does that work? just curious __________________ 1-1988 toyota truck xcab, 3"bl, new paint, cold air, soon to come-bj spacers, new 2" lifted rear springs.

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02-25-2008, 11:33 AM	#2 (permalink)
MMA_Alex Registered User Join Date: Apr 2006 Location: Downeast, ME/Rochester, NY Posts: 1,421	have you adjusted the valve lash? do a search on valve adjustment, and you'll find a ton of info.

02-25-2008, 01:44 PM	#3 (permalink)
joshuapc Registered User Join Date: Feb 2008 Posts: 107	no i havnt adjusted it yet. just lookin for sum suggestions before i take apart my engine. would any body recommend some other mods or sources of the problem?

02-25-2008, 05:06 PM	#7 (permalink)
joshuapc Registered User Join Date: Feb 2008 Posts: 107	thanks a lot for everyones suggestions! damn things irritating!

02-25-2008, 07:28 PM	#8 (permalink)
joshuapc Registered User Join Date: Feb 2008 Posts: 107	what do you mean by fuel injectors? they make a tapping noise?

02-29-2008, 02:02 PM	#10 (permalink)
MMA_Alex Registered User Join Date: Apr 2006 Location: Downeast, ME/Rochester, NY Posts: 1,421	the rocker arms tap on the shield thing inside of the valve cover.