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Page of 1. Filtered by:. Previous template Next. What are possible causes of a car randomly stalling at idle 2 August , I need to get back to trying to sort out a random stalling issue at idle. I have an auto BW35 with ZS carbs. When I come to a stop, randomly it will stall. I have checked the following over the years, but the problem persists.
I have Lumenition with a new Bosch red coil. I have looked and adjusted the temp. The dash pot oil is OK. Car is air balanced. Timing is OK. I'm not aware of an air leak. Removing oil filer cap causes engine to run rough. I check float valve heights. Diaphragms are OK. Air filter is clean. The spark plugs are brownish but I can smell fuel on the odd occasion.
Fuel consumption has been marginal short trips 13 US miles per gallon Here are some observations. Compared to Stag no. When I start the car for the first time in the day I need to pull the choke out more than fast idle, but can smell unburnt fuel from exhaust. I do have a hole in one silencer which is getting worse I need to take care off. Idle speed on my auto is about , but when I engage in drive, engine speed dropped to about ish or slightly lower.
Stag no. I overhauled these the same way. The only difference is that this Stag has Pertronix. This car runs very well. It idles well at around rpm.
