|
Zenith problems
Hi,
I had a mechanic work on my 1970 911t because of a lot of backfiring out the exhaust. He rebuilt the carbs but there were issues. Floats were hard to find, then overflowing occurred and a fuel pressure regulator was added. Overflowing ceased but car surges while idling. Unsettled idling. Also at light throttle car surges badly and makes it uncomfortable to drive. Under hard throttle it accelerates ok until it sputters and sort of breaks down. I've been messing with the idle mixture screws and air bypass screws to no avail. If I make it rich enough so it doesn't backfire, it surges at low speed. As it was before the rebuild, the air bypass screws don't really seem to have any effect. The idea was to rebuild the carbs instead of buying new ones to be cheaper but I think I made a mistake. The auxiliary enrichment has been bypassed/disconnected as a few Pelicans have suggested. The floats are supposedly working, the car starts very easy compared to before the rebuild.
If anyone has any ideas I'd be glad to hear them.
|