strange engine noise

**oldways** · 10-30-2010 01:55 PM

its a small block 327 the noise sounds like a badly adjusted valve this is what i have done so far adjusted the valves over and over (hydraulic) then i fitted a new cam, cam followers, push rods, then adjusted again still the noise is there.... could it be the push rod on the mecanical fuel pump.. and oh yes the oil presure is good.. about to go crazy want to ride my rod but what if?

**fun4me** · 10-30-2010 02:47 PM

Does the noise change while you are adjusting the valves or does it sound different on one particular rocker arm?

**oldways** · 10-30-2010 02:53 PM

I adjust the rockers when the engine is cold

**fun4me** · 10-30-2010 02:57 PM

Does the noise go away for a few minutes after you adjust the valves?

**oldways** · 10-30-2010 03:02 PM

the noise stays no matter what I do

**fun4me** · 10-30-2010 03:05 PM

I was thinking maybe you had a rocker stud coming loose loose. Have you tried to isolate the noise with stethscope?

**techinspector1** · 10-30-2010 03:16 PM

A header leak or cracked flexplate will emit noises that sound like mechanical problems inside the motor.

**oldways** · 10-31-2010 12:11 AM

i have not tried either of these possibility let me get to it and post my finding in a day or so thanx for your help

**jerry clayton** · 10-31-2010 07:08 AM

short out one cylinder at a time to see if the sound changes---if it goes away with any plug shorted you probably have a bad rod bearing or wrist pin/piston

**oldways** · 10-31-2010 07:12 AM

thank you all for your help im gona get on it during the week and will post my findings

**NTFDAY** · 10-31-2010 09:56 AM

From what I read in your first post I'd be looking at a collapsed lifter.

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