Stalling on over run with the clutch in.

Talk about the E-Type Series 1

Topic author
Steve1967
Posts: 84
Joined: Sat Nov 19, 2016 1:00 am
Great Britain

#1 Stalling on over run with the clutch in.

Post by Steve1967 » Fri Dec 18, 2020 5:30 pm

Hi All, I wonder if anyone has an idea what could be causing thgis.

I have just finished rebuilding my car and have managed to put about 150 miles on it over the last few weeks. It runs really well, although it is reluctant to start from cold and when approaching traffic lights etc, you dip the clutch just before you stop and this seems to make the engine stall. I have to do a bit of clever foot work to keep it going. It starts immediately when warm.

I have very careful set the carbs up, following all the manuals and items on the BB, I have also used colour tune, albeit only on one cylinder, and that seems fine. Tick over is at 750 rpm and steady.

Ignition timing is via a 123 tune+ dissy and I am confident I have that set exactly at factory levels. It was set (light on) at zero degrees at TDC and then I added the 10 degrees and the other way-points from the manual. Ditto for vacuum advance. The TDC marker is spot on.

Any pearls of wisdom would be gratefully received as it is very annoying!

I think a bit more mixture initially, but whats the consensus?

Thank you in advance.
Steve living in Tewkesbury, UK
1967 E Type 4.2 series 1.5 roadster 80% completed restoration
1960 Austin Healey 3000 BT7 restoration complete!

Link:
BBcode:
HTML:
Hide post links
Show post links


christopher storey
Posts: 5064
Joined: Sun Mar 09, 2008 3:07 pm
Location: cheshire , england
Great Britain

#2 Re: Stalling on over run with the clutch in.

Post by christopher storey » Fri Dec 18, 2020 6:16 pm

Steve : what happens if you leave the engine idling for a minute or two and then fully depress the pedal and hold it down ? If this does not stall the engine then there is not a lot to worry about, and your suggestion of incorrect mixture ( probably too weak, but any inaccuracy in float levels either way could be a cause ) is likely to be correct . If , however, it does stall it, then there are further checks that you need to make but there is no point in going into those until we have the answer to my first question

Link:
BBcode:
HTML:
Hide post links
Show post links


Robbiee
Posts: 531
Joined: Sun Aug 16, 2015 12:07 pm
Location: Derbyshire

#3 Re: Stalling on over run with the clutch in.

Post by Robbiee » Fri Dec 18, 2020 7:01 pm

For the first 1000 miles or so my rebuilt engine did this at times. I’m wondering if the engine just needs to bed in a little ? Mines fine now
Robbie 1962 3.8 Coupe OSG 1962 OTS ODG

Link:
BBcode:
HTML:
Hide post links
Show post links

User avatar

PeterCrespin
Posts: 4436
Joined: Fri Mar 05, 2010 8:22 pm
Location: Gaithersburg, Maryland.
Contact:
United States of America

#4 Re: Stalling on over run with the clutch in.

Post by PeterCrespin » Fri Dec 18, 2020 11:50 pm

Raise the idle and/or add a little static advance which will do the same thing. 150 miles will still be a tight engine. Most automatics are programmed to cope with more idle load when stopped in Drive rather than Neutral and yours will do better with the idle air set slightly more generous to decrease vacuum pumping loads.
1E75339 UberLynx D-Type; 1R27190 70 FHC; 1E78478; 2001 Vanden Plas

Link:
BBcode:
HTML:
Hide post links
Show post links

Post Reply Previous topicNext topic