Join Date: Aug 2001
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What does a bad lifter sound like?
I am getting a strange noise from my jeep, and I am pretty sure it is coming from the engine.
The motor I have in my Jeep is a 350. It has hydro lifters in it, and I am wondering if maybe one is bad? The engine only has 1700 miles on it at this point.
The noise I am getting only happens some times. The rest of the time the engine runs like a dream.
I think I would describe the noise as a "clatter" (it kind of sounds the same as when my last jeep had a cracked flex plate) (this Jeep is a standard, so it has no flex plate)
I get the sound, only when the RPM's in the engine are low, and the jeep is under hard accelerate.
So, say I am in 1st gear, and I shift into second, and apply a heavy throttle... I get a clatter for a bit. If I let off a little the clater will go away. And once the RPM's come back up a little, the clatter goes away.
The only other time I hear it is if I am in 4th gear, and I am going up a long hill.. If I apply more throttle, sometimes I will get the same caltter. Basically when the throttle (carb butterfly) is open more than needed for the given Motor RPM (under very low manafold vac) I seem to get this clatter.
I am hopefully going to get a local motor builder to go for a rid with me some time this week, or next. I would just like to be clued in a little before I talk to him about this.
Does this sound like maybe a bad lifter to anyone? Anyone have any other ideas?
Thanks for any help, I know that sounds are hard to diagnose in this manner, I figure I would try.