I’m trying to diagnose and fix a serious problem that has developed with my 1985 4/4 Roadster fitted with the Ford 1.6 litre CVH Engine. ( purchased in March this year with only 28,000 miles on the clock! I have clocked up 700 miles since then). Intermittent and sudden loss of power under load. Most disconcerting when you are entering a roundabout or overtaking! I have replaced all the ignition system components (all plug and distributor/coil leads, coil, rotor arm, spark plugs and distributor cap). All filters have been checked and replaced where necessary. The engine is fitted with a Facet electronic fuel pump (pressure tested OK) and Weber carburettor. On a run the engine can run well for hours, then the next time you go on a run it will happen without warning. I don’t think it is the timing and it only happens when the engine is hot and under load. When placed in neutral the engine will rev with some slight misfiring but when placed into gear the engine speed drops and stalls under load. Switching off and leaving for half an hour sometimes cures it or revving up to 4000 rpm and slipping the clutch will get some results, just enough to get you home. By process of elimination I can only assume it may be fuel related. I’d appreciate feedback from anyone who has had a similar problem and how it was fixed.
