Seems powerless after oil and spark plugs change

[PorscheFan]

Hi:

I just had my 98 Box (tip) oil and spark plugs changed (30k miles). Right after that, I feel smoothier than before. But after 2 days, I feel a kind of powerless and response is not so good as before. I checked oil, no leak. Spark plugs, seems OK and tightened. No Check Engine light is on. I don't know what will go worng. Any advise is very appreciated.

[sasilverbullet]

I'd suspect one of the plugs, even though they're new, they sometimes do fail right away.

[Loren]

Or... perhaps one or more of the ignition coils on the plugs is not seated properly.

[b-man]

I'd say broken coil (or broken spark plug wire somewhere near the coil) or, as Loren said, that a coil isn't seated properly.

b-man

[Tool Pants]

I say, I do not have a clue. And I have changed the plugs on a few Boxsters.

If just 1 of the 6 plugs is not firing then you will know the second you start the engine. You will also get a check engine light due to a misfire. There are no spark plug wires.

And you noticed this 2 days later. No clue.