Lifter sound issues

I have a 1995 740iL BMW with a M62 series engine. I am getting a
tapping noise in my lifter area on the drivers side of the engine. We
thought we had collapsed lifters, but we replaced all 16 on that side.

I took it to the BMW dealer and all they could tell me is what i
thought it was. They had no other ideas on what could be making this
sound.

We checked the cranshaft and also pushed down on the rods while they in
the engine. All of the springs compressed down, so the springs seem
good.

When the engine runs it sounds like a deasel, and the sound is
defenitley on the entire drivers side head bank.

Any ideas on what could be causing this anyone?

_Bic

wrote:
>
> I have a 1995 740iL BMW with a M62 series engine. I am getting a
> tapping noise in my lifter area on the drivers side of the engine. We
> thought we had collapsed lifters, but we replaced all 16 on that side.
>
> I took it to the BMW dealer and all they could tell me is what i
> thought it was. They had no other ideas on what could be making this
> sound.
>
> We checked the cranshaft and also pushed down on the rods while they in
> the engine. All of the springs compressed down, so the springs seem
> good.
>
> When the engine runs it sounds like a deasel, and the sound is
> defenitley on the entire drivers side head bank.
>
> Any ideas on what could be causing this anyone?

Low oil pressure may do it. But it's amazing just how similar a blowing
exhaust manifold gasket and lifter noise are.

--
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Email: , John G.Burns B.Eng, Bonny Scotland
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"John Burns" > wrote
> wrote:
>> I have a 1995 740iL BMW with a M62 series engine. I am getting a
>> tapping noise in my lifter area on the drivers side of the engine. We
>> thought we had collapsed lifters, but we replaced all 16 on that side.
>>
>> I took it to the BMW dealer and all they could tell me is what i
>> thought it was. They had no other ideas on what could be making this
>> sound.
>>
>> We checked the cranshaft and also pushed down on the rods while they in
>> the engine. All of the springs compressed down, so the springs seem
>> good.
>>
>> When the engine runs it sounds like a deasel, and the sound is
>> defenitley on the entire drivers side head bank.
>>
>> Any ideas on what could be causing this anyone?
>
> Low oil pressure may do it. But it's amazing just how similar a blowing
> exhaust manifold gasket and lifter noise are.

Don't forget that that engine had oil pump bolt problems - see
http://www.strictlybmw.com/newslette.../v8oilpump.htm
However, since it's (apparently) only one side, I wouldn't think it
would be oil pressure...

FloydR