911 Cold Start

[Bessell]

I am the owner of a 1971 911T 2.2 which runs on triple choke webers. I recently had the car set up on a rolling road. I have now covered about 500 miles since this operation, when I first had the car back to start it I was told to pump the accelerator to prime the carbs which worked initially. Now however the car is quite difficult to start. Looking at the handbook it indicates that the red lever on the floor is a cold start device, I have tried this but to no avail it is still reluctant to start. Does anyone have any idea what this lever should do ie does it attach to an air control on the airbox is should it act on the carbs in some way?
looking at it it does not seem to be connected to anything.
Any information would be gratefully received.

 

[Charlie_McLaughlin]

Hi,

The red lever is only connected to the acelerator pedal... pull the lever and you can see the pedal move.... its only for holding the revs up if required... its got nothing to do with the carbs or actually starting the car, my 72 T, needs just a few pumps to put petrol into the carbs, then off it goes. Can you hear the fuel pump working before you try to start the engine..
Cheers

Charlie

 

[Bessell]

Thanks for that Charlie, as I said I have tried that and it still takes an age to start. I have found however that if I depress the pedal slightly it will fire after about 4 turns. The guy that set up the carbs on the rolling road did suggest that because the engine had been rebuilt that after running for about a 1000 miles it would probably need checking again. Perhaps the extreme weather has accelerated that.

John Bessell

 

[38F3E1]

You might need the black lever adjusting so it actually does move the accelarator. They are quite sensitive and get out of adjustment over time. Sounds like you have found a solution though by depressing the pedal yourself.

Ian.

[post ammended to say black lever rather than red lever]

 

[wendysloper]

I hope you don't mind me suggesting basic stuff, but have you checked the plugs & points? These can have quite an effect on winter starting of any classic.

 

[Bessell]

Thanks Phillip, no I dont mind but they are all new as the engine was rebuilt about 500 miles ago.

 

[Robin]

Interesting variation occurring here, on my 1973 911S there are two levers between the seats the left hand one has a black spherical tip and is the hand throttle/cold start device, the one on the right has a longer red tip and that one works the heater flap boxes at the heat exchanger end. are the earlier hand controls different?

 

[wendysloper]

On my '73 car the red is also the heater, black is hand throttle.

 

[38F3E1]

ORIGINAL: Robin

Interesting variation occurring here, on my 1973 911S there are two levers between the seats the left hand one has a black spherical tip and is the hand throttle/cold start device, the one on the right has a longer red tip and that one works the heater flap boxes at the heat exchanger end. are the earlier hand controls different?

No it's just me that's dazed and confused. I've ammended my post to say black lever.

 

[Alex Postan]

If the engine is only 500 miles since its rebuild, you may well find that the points have closed up during the initial bedding in of the composite follower against the cam. It only takes a couple of minutes to do the points on an early 911 - everything is easily accessible and you shouldn't even get your hands dirty.
Silly question: what procedure do you use for starting? If it is using Weber carburettors, you should leave the choke well alone and once the fuel pump has stopped clicking to give the accelerator pedal four full pumps to dose the inlet manifolds with petrol before pressing he button/turning the key.