Date: Mon, 30 Jan 2006 18:01:37 GMT From: Paul Halliday <pjghnospamyonder.co.uk> Subject: Re: [Saab c900] Start, Fires, Dies
in article MurDf.10649$Ix.5996nospamdc07, James Sweet at jamessweetnospamail.com wrote on 30/01/2006 16:51: > mrcheerful . wrote: >> "sweller" <swellernospamch.fsnet.co.uk> wrote in message >> news:xn0ehs054htlhz000nospam.individual.net... >> >>> Ho hum. >>> >>> After a productive afternoon replacing the defective heater valve I had >>> my 1985 8 valve injected 900 idling away quite happily to get up to >>> temperature so I could check for coolant leaks. >>> >>> The car idles a bit too fast so I took the opportunity to just back off >>> the throttle stop a touch. It started to hunt then died. No worries >>> thought I, just speed it a little... >>> >>> It now starts on all four cylinders, runs for a second or two then dies. >>> >>> Throttle position has no effect. It was low on fuel but now has over two >>> gallons, the pump in the tank can be heard to run for a few seconds and >>> then stops, fuel reaches the filter and is under pressure. >>> >>> The car ran perfectly this morning. >>> >>> Ideas? I'm a bit stumped and it's in the way where it is at the moment. > Is this CIS injection? If so, it might be a plugged control pressure > regulator, unplug the starting injector and see if the car still starts > at all. I've been cleaning up a very similar mess on a '79 Volvo, the > car sat and the inside of the fuel filter rusted apart and puked a whole > mess into the injection system. As a 1985 8V, it will be CIS. Unbolt the injectors from the manifold and arrange them into transparent collector (like jam jars), pop the bellows off the fuel mixture unit and pull the plate up. Do the injectors spray well? Do you have a massive air leak somewhere? Try firing up with the throttle open and then back down to part throttle. Let off the throttle and see if it dies. That would indicate a huge air leak. Did you check the oil when doing your recent work? Make sure the dipstick is correctly inserted and pushed down tight. Paul 1989 900 Turbo S http://saab.go.dyndns.org/
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