Date: 26 Oct 2021
Issue
This article focusses on the standard mechanical fuel pump fitted to standard 1200cc and 1500cc pre-crossflow engines.
Engine won’t start, no fuel in pump bowl.
Loss of top end power or engine splutters at speed.
Oil drip under car.
Diagnosis
First check there is actually fuel in the tank.
To investigate pump. The standard ‘glass bowl’ fuel pump is a mechanical lever/diaphragm device. A cam inside drives the fuel pump bolted to the side of the engine. Unscrew and carefully remove glass bowl. Inspect pump diaphragm and replace if perished or split.
Oil leak under car – leaking pump to engine gasket – leads to engine oil loss onto floor under car – unlikely to be terminal but may be annoying and it will get the MOT guy all excited. To find oil leak inspect fuel pump to engine block gasket.
Repair
Unscrew and carefully remove glass bowl.
Inspect pump diaphragm and replace if perished or split.
To fix oil leak, detach fuel pump from engine block and fit new gasket.
Parts
Approximate prices from: 2 Jan 2023
| Part | Description | Supplier | Cost |
|---|---|---|---|
| F9 | Fuel System: F9 – Fuel pump repair kit (mk1cortina.club) | Club Spares | £14.80 |
| F9R | Fuel System: F9R Fuel pump rebuild kit (mk1cortina.club) | Club Spares | £30.54 |
| G12 | Gaskets: G12 – Fuel pump spacer/gasket (mk1cortina.club) | Club Spares | £5.76 |
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