Wow! Hadn't thought of that. Sort of like the 'ol potato up the tailpipe
routine. Makes sense. Anytime you baffle down an exhaust system, whether
car or chimney stack, you are going have a back pressure from hell that
will affect power. Thanks for the reminder, guys!!

John

On May 25, 2017 08:22, "Jim Felder" <jim.felder@gmail.com> wrote:

Now I recall that son in law's Civic did the same thing. I thought it might
be an auto transmission gone bad but t'was the cat.

Jim

On Thu, May 25, 2017 at 8:20 AM Larry Alofs <lalofs@gmail.com> wrote:

> I second Mark's idea about the cat.  I experienced symptoms the same as
> yours when the insides of a cat had broken loose and turned sideways.
>
> Larry A.
>
>
> On Wed, May 24, 2017 at 4:59 PM, John Rodgers <jrodgers113@gmail.com>
> wrote:
>
> > Have a mysterious power loss on my new engine overhaul. It has run fine
> > until two days ago. Now it won't pull your hat off your head.
> >
> > Engine runs fine. Starts easy, idle smoothly, runs smoothly at any rpm
it
> > is capable of turning. There is no spitting, missing or backfire. Just
> > doesn't develop power to accelerate. Going up hill it just gets slower
> and
> > slower and slower, the rpm will drop to about 1500. Top speef is about
55
> > mph. I han't checked the timing yet, but thats next.
> >
> > Suggestions???
> >
> > John
> >
>