Hi all.
I am fairly new to the forum and this is my first ever post, apologies if this is done incorrectly. I have an unusual issue that I cannot find the answer to after hours of searching online...
I have a 1986 Mini, running a 1275cc A+ engine with twin HS2 carbs, AAC needles. The crazy story is: my car will not start.
Back story: I was using the mini daily and it was working fine, although admittedly running a tad rich. One day whilst driving home from the MOT center, my mini just died (luckily whilst pulling up on the drive!). It sounded like it had just ran out of fuel. Since then I have never been able to get it started. The garage had just swapped the points, condenser and coil as the same thing happened to them on a test drive. Despite this, the issue came back after just 50 mins of driving. After thinking it could be ignition related, I converted the car to AccuSpark electronic ignition. No reward.
Checks I have done:
- Added more fuel
- I have spark.
- I have compression: between 190-215 psi on all cylinders.
- I have fuel going into the carbs, there is plenty in the float chambers.
- Timing seemed fine before the car stopped. I do now have a timing light to check when it gets going
- Leads, plugs, coil are new or in good condition.
- Battery & starter motor are strong.
When I pour a little fuel into the air intake, I get life! For this reason, I assumed the issue was carb related. I inspected the carbs, cleaned the jets and chambers, everything looked good. I could not see a reason why they were not working. I anyway decided to buy a rebuild kit from Mini spares and replace all necessary parts, including jets and whole new float chamber assemblies. I cleaned everything in the ultrasonic cleaner we have at work. I adjusted the carbs as the manual suggested. Still no reward.
When ticking over fuel goes into the float chambers, but does not seem to get sucked through the jet into the inlet on either carb. I do not think I have a leak in the manifold, but I guess there is not enough vacuum in the chamber to suck the fuel in?
I am baffled!
If anyone has had a similar issue or can offer advice, it would very much be appreciated!!
Thanks in advance,
Dan
Edited by d46blackledge, 31 January 2022 - 02:01 PM.