I had change the catalytic converter two months ago, after testing the
motor presure "compresion" and changing the fuel filter i would have some
direct responces.> "Fernando Olea" <hellfish@aliceposta.it> wrote in message
> news:300Ed.382974$b5.18690941@news3.tin.it...
>> This is actually the problem, everytime i press the gas with third or
>> fourth gear and i want to get some speed the car it seems to donthave
>> enought power to take off, i have change the PCV Valve , the distribuitor
>> cap and wires even the rotor, but nothing happened, i heard something
>> like the valves tik tik tik very low sound but it seems to be that, the
>> fuel economy is very good, i dont know about the compresion,can someone
>> give me some tips, i am going to change the fuel filter in a couple of
>> days but i dont think that is the problem that thing.
>>
>>
> It is possible the catalytic converter (or other exhaust part) is plugging
> up. The Haynes manual for that covers my daughter's 93 Accord has a test
> for exhaust restriction, using a manifold vacuum guage. She has the manual
> in her car, but the concept is:
> 1) note the idle manifold vacuum reading
> 2) open the throttle to bring the rpm up to about 2000 rpm
> 3) close the throttle and watch the vacuum guage
> If the exhaust is clear, the reading should show more vacuum than at idle
> and return to the idle reading in about 2 seconds. If restricted, the
> vacuum will seem to "hang" where it was and/or gradually return to the
> idle setting after more than 2 seconds.
>
> The exhaust can also be checked by loosening an exhaust fitting near the
> engine and blowing into the exhaust pipe (remember to wash the soot ring
> off your face!) There should be little resistance to your breath. An old
> Corolla my son had was so blocked it was worse than blowing through a soda
> straw. It idles okay but wouldn't go anywhere any more. A similar check is
> to compare the exhaust feel when you place your hand near the exhaust pipe
> and rev it with a similar car that works, but that won't show up anything
> but a severe blockage.
>
> Mike
>