Main Menu

Engine surge

Engine

Vehicle Information: Year: 1976; Body Type: Targa;

I have read the questions asked on surging already, but I did not see any comment on a real rich mixture. My 911S will start up easily and then sometimes will start surging from 1200 rpm to almost stalling and has the smell of a really rich mixture. This is only an intermittent problem though, sometimes it starts up fine with no problem at all. If I depress the accelerator and keep the idle around 2000 rpm, it is still burning rich for up to about 5 minutes, then the idle comes down to around a 1000 rpm, smooths out, and is burning normally. During the time I have the accelerator depressed, the engine is vibrating more, like it would be "missing". I have not been able to determine if it is ambient temperature related, since the weather is just beginning to warm up some. If I start it up and immediately start driving, it does not appear to have this problem.

You must log in to view answers associated with technical questions. Join PCA to participate in our community.
No votes yet