Lifter types in the 3.8L OHV - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 10-18-2004, 02:39 PM   #1
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Default Lifter types in the 3.8L OHV

I'm wonder what kind of lifters are in a '95 Bonneville SSEi

Im wondering because im getting alot of valve/lifter noise from the motor. Not notoriously loud, yet, but its noticeable. Its a series of repetetive ticking at idle

Im guessing it could be rocker arms which would make me sleep better...
Might also be valve springs (never heard of them making ticking noises) , maybe even the valves hitting the valve seat. Is this a normal sound from the 3800??

Mainly Im wondering if we have solid lifters, or hydraulic lifters stock. If they are solid then im guessing im in need of lifter work. Oh well, ive done it before.
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Old 10-18-2004, 04:08 PM   #2
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Should be hydraulic roller lifters.
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Old 10-18-2004, 04:26 PM   #3
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It'* plenty normal. And all 3800'* are Hydraulic rollers.
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Old 10-18-2004, 04:27 PM   #4
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The ticking you hear is probably the fuel injectors.
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Old 10-18-2004, 04:47 PM   #5
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Quote:
Originally Posted by Sol
The ticking you hear is probably the fuel injectors.
Agreed, its normal for the 3800 to make ticking sounds. You can get a long handle screwdriver and cup the butt end to your ear and place the blade on the fuel lines and you should hear it clearly. If you put the blade to the valve covers and hear ticking then it could be a rocker or lifter problem. Lifter tick should go away once they are pumped up though (warmed up).
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Old 10-18-2004, 05:39 PM   #6
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If you're replacing lifters, MAKE SURE you measure them comapred to stock. A GTP lost an engine because of lifters from Autozone were a hair too tall. Witha modified valvetrain, pushing the lift limit, including a cam... It didn't last long.
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Old 10-18-2004, 07:16 PM   #7
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I second the fuel injectors ... this is however unless you've isolated the noise too the valve cover area

hydrolic lifter tick usually goes away once the engine is warm. injectors is a pretty constant tick and usually can only be heard when the hood is open

kinda freaked my out the first time i opened my hood with the engine running... cause with the hood closed I can't hear anything accept the A/C pump clicking on and off now and then ... then open my hood and get baraged with fan and fuel injector noise it'* good and bad.. I can't even hear exhaust unless the car is above like 3K rpm (with the window open)

kinda makes me wonder how thick that hood really is course mine is a delta88 with a 3.8 not a bonne with a 3800
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Old 10-21-2004, 12:13 PM   #8
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Yes, i do have the Series 1

No, the noise isn't coming from the injectors, because they make a different clicking (typical injectorsm they are also brand new) noise than what i've pretty much isolated. I'm not an amateur in automotive mechanics.

Using the steth, the ticking is best heard with the probe touching the rear of the block (the opposite side from the balancer and pulleys)

The injectors do tick but its easily distinguished from the other noise.

Cars got 184,000 on her.

I'm assuming its the lifters as they are in the area where the noise is best heard. The rocker arms also tick, but that isn't a worry to me because its pretty normal.
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