A badly maintained or worn carb can be a major cause of poor running & low performance. Theres no point sticking an old dirty carb that's done 100,000 miles, on your brand new motor, is there ?
Rebuild kits are currently available for £47.50 in the turbo-mini.com shop, and fitting is fairly straight forward.
Click here for more info on the rebuild kit.

STEP 1.
Take one dirty old Turbo carb that's spent the last 20 years under the bonnet of a Metro.

STEP 2.
Remove the dashpot assembly, making sure to place it somewhere safe, so as to avoid damaging the needle.
If the dashpot has never been removed before it will be held on with the "tamper proof" screws fitted by the factory. These can be a pain to remove as a special tool is required, but as we'll be fitting new flat blade screws {supplied in the kit} the easiest way to remove them is to cut a slot in the top of them with a hacksaw, and using a flat blade screwdriver, remove them.

STEP 3.
Remove the float bowl.
The float bowl may also have the "tamper proof" screws fitted. If so follow the same removal procedure as for the dashpot.

STEP 4.
Take out the jet/bi metallic strip & float. To remove the float look for the small allen key bolt head on the outside of the carb body.

STEP 5.
Remove the choke assembley. Make sure to keep a note of how the parts fit & to retain all the old parts, many have to be re-used as the rebuild kits do not contain every component.

STEP 6.
Replacing the butterfly with the plain disc supplied in the kit is very worthwhile. The "poppet" valve {shown left} causes a big restriction to airflow & can cause running problems as the spring weakens with age.

STEP 7.
After removing the  choke and throttle cable assembleys the throttle shaft can be withdrawn. Note the special seals fitted to the ends of the shaft where it sits in the carb body.

STEP 8.
Using a correctly sized punch, remove the bushes in the carb body that the throttle spindle sits on. New ones are supplied in the kit.

STEP 9.
Removing the choke assembley.

STEP 10.
Contents of the float bowl.

STEP 11.
Cleaned and reassembled with new components.

STEP 12.
Replacing the throttle shaft, seals and butterfly disc.

STEP. 12B
Refitting the choke with new seals. This is very important as this is often one of the first places to leak on old carbs.

STEP 14.
Replacing both throttle and choke mechanisms.

STEP 15.
Dashpot o ring seal is replaced. Make sure you seat this properly to avoid deforming it when the dashpot is screwed down.

STEP 16.
Finished item, ready to be fitted.
Don't forget to top the dashpot oil up !