D.Duck wrote:
wrote in message
...
On Mar 26, 1:29 pm, wrote:
On Wed, 26 Mar 2008 08:17:41 -0700 (PDT), wrote:
What about the fact that you may well be voiding your warranty? What
about the fact that today's fuel systems work on precise pressures and
an extra filter may very well change that? What about the fact that
the computer my very well sense a problem with the fuel delivery and
not work correctly?
There are two fuel pumps between the line and the injectors. I doubt
an external filter will have any effect at all.

It HAS to have an effect, it's a restriction.

But is the affect detrimental?




If the external filter handles flows six times greater than my outboard
burns at WOT, what is the net effect of any restriction? And since my
engine manufacturer recommends using an external filter, why would its
use be detrimental in any way?

The external filter keeps water and crap out of the fuel going into the
engine.

On Mar 26, 1:51*pm, HK wrote:
D.Duck wrote:
wrote in message
...
On Mar 26, 1:29 pm, wrote:
On Wed, 26 Mar 2008 08:17:41 -0700 (PDT), wrote:
What about the fact that you may well be voiding your warranty? What
about the fact that today's fuel systems work on precise pressures and
an extra filter may very well change that? What about the fact that
the computer my very well sense a problem with the fuel delivery and
not work correctly?
There are two fuel pumps between the line and the injectors. I doubt
an external filter will have any effect at all.

It HAS to have an effect, it's a restriction.

But is the affect detrimental?

If the external filter handles flows six times greater than my outboard
burns at WOT, what is the net effect of any restriction? And since my
engine manufacturer recommends using an external filter, why would its
use be detrimental in any way?

Your manufacturer recommends a SPECIFIC external filter. It still has
a negative effect because it's in ADDITION to an already existing
filter.

The external filter keeps water and crap out of the fuel going into the
engine.- Hide quoted text -

- Show quoted text -

Isn't that what the internal filter is for?

On Mar 26, 9:33*pm, wrote:
On Wed, 26 Mar 2008 11:01:06 -0700 (PDT), wrote:
The external filter keeps water and crap out of the fuel going into the
engine.- Hide quoted text -

- Show quoted text -

Isn't that what the internal filter is for?

No it is simply the final filter that determines what can get to the
injectors. It is not big enough to do all the filtering you might need
and has virtually no water separation ability.

So the internal filter isn't a filter?

wrote in message
...
On Mar 26, 9:33 pm, wrote:
On Wed, 26 Mar 2008 11:01:06 -0700 (PDT), wrote:
The external filter keeps water and crap out of the fuel going into the
engine.- Hide quoted text -

- Show quoted text -

Isn't that what the internal filter is for?

No it is simply the final filter that determines what can get to the
injectors. It is not big enough to do all the filtering you might need
and has virtually no water separation ability.

So the internal filter isn't a filter?

Have you ever heard of "belt and suspenders"?

If one's good, more's better.