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Tips
Tips

Hesitation on pulling away from stop

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See? Ask the questions, get the answers! Dial Indicator for TDC is good...if you didn't just look for the null. You want to mark the damper at a specific number before, like .010", or ,100", then match it on the after, mark the damper, and measure the exact point between those marks.

Stethoscope? Find a piece of rubber fuel line, several feet long, hold one end CLOSE to your ear (never touch it in case you hit that vacuum leak and suck your brains out. Engine running, position the open end of the hose near what you want to listen to. You will hear it.
Some you will have to learn is not a leak, rather the noise the air molecules make as the rapidly pass a specific point (joke).

Inlet gasket leak.
Carb base gasket leak.
Have Phenolic spacers? Leaks?
Have a brake servo booster?
Have a vacuum reservoir can?
Inlet valve guides?

Oh, and look at the pistons as you start to bring the throttle up to see if they all come up together....or if you have a single point failure.
 
Yes, we did mark the damper either side of TDC and measured the mid point, to get an accurate point due to the null error.

I am going to try the tube tomorrow as a second check having squirted WD40 over all the accessible joints.

yes, I do have a brake servo booster. I will try again looking for splits in the tube to the brake servo, but last time I disconnected the servo and blocked off the tube from the manifold to the servo and it made no difference. BUT, you have made me think of something. When I push the brake pedal there is some slop in the system so I have to give it one pump to get a higher hard pedal. The car does stop ok and has discs on the front. We bled the brakes last week and there was no air in the lines from the wheels to master cylinder on the pedal end.

it is quite hard to look at both pistons going up as the Carbs are very close to the side of the car, unlike the open hood of an E Type. So will try to look at with a mirror.
 
and...I can tell you from experience....low manifold vacuum (or a leak between manifold and booster) gives all sorts of odd results at the pedal.
BTDT
 
Check carbs have oil in the slide piston chamber without oil it will not pull strong from idle, Then there could be a dirty fuel filter involved as well good luck.Some times if you back blow fuel lines it will clear dirt in lines.
 
TOC, I think that I have checked so many things, that what I am going to do is have the brake servo booster looked at by the garage.

Lee, yes it does have oil on the slide and the correct SAE20 oil in the piston damper on the SUs. The fuel filter is the clear glass type and is clean. The fuel lines are clear and as far as I can tell float level correct in the two fuel bowls. I checked as the instructions with the top off and a 7/16 rod under the the little brass float lever. The actual floats are also ok and not filled up with fuel and sinking.
 
OWD724 said:
I have a slight problem of the car wanting to stall when I let the clutch in, if I do not give it some revs...
Click to expand...

Let me see if I understand the initial question... are you saying you have to 'give it the gas' as you engage the clutch from a standing start?

I think I always do that -- but then I drive like a teenager (with 50 years of experience).

I know it is hard to describe what you are doing and the result you are getting so it's nigh impossible for me to say if what you are experiencing is anything abnormal.
 
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