Total 911

Ask the expert

Got a question for our Porsche technician? Email us editorial@total911.com

-

Dear Sir,

When accelerati­ng at 3,000rpm in all gears I get a split-second power drop. Is this a problem on the horizon? The car is a 997.1 C4S, manual, with approximat­ely 72,000 miles on the clock.

Jed Starkey

Typically, 997.1s don’t suffer any power drops throughout the rev range. The delivery is nice and smooth and very linear due to the torque of the engines. They pull very well indeed. I would advise having a diagnostic machine plugged in with a passenger so that the misfire counters can be logged and monitored during the fault occurrence. The basic thing to check is the last time your 911 received new spark plugs as part of a major service, and you should also inspect the condition of the coil packs: these can crack and degrade, causing issues. It would be good to know if this has just started happening, and what fuel you’re using? I’m not aware of any issues since the switch to E10, but there may be a correlatio­n here.

 ?? ??
 ?? ?? Scott Gardner Job title Technical director, Bahnsport Porsche experience 15 years
Scott Gardner Job title Technical director, Bahnsport Porsche experience 15 years

Newspapers in English

Newspapers from United Kingdom