Why Car Engine Cranks, but Backfires
Car Initial test
Check whether the distributor housing moves within its clamp. If it is loose, the ignition timing is probably incorrect. (more…)
Why Car Engine does not Crank or Cranks Slowly
Car Initial test
Select neutral, switch the headlights on and then operate the starter. Note the reaction from the engine and the effects on the headlights and follow the advice given in the following paragraphs.
Faulty Car battery
If the engine does not crank or cranks slowly, coupled with appreciable dimming of the headlights, the symptoms suggest corroded battery terminals, loose battery terminal connections or a discharged or defective battery. (more…)
Why Car Engine Cranks normally, but fails to start (continued)
4. Carburettor
There are two likely reasons why petrol is present in the pipe, but not finding its way into the manifold:
- A blockage at the carburettor needle and seat, or
- A defect — probably a disconnected link — in the carburettor plunger.
To rectify these faults the carburettor will have to be dismantled. (more…)
Why Car Engine Cranks normally, but fails to start
1. Initial Car test
The fault can be in either the ignition or fuel system. To determine which, remove the wire from one spark plug and, if its metal terminal is insulated, insert a key or other metal object into the rubber insulation so that it touches the terminal. Hold the wire at the insulated part (well away from the wire terminal to avoid a shock which, with electronic ignition systems could be dangerous), and place it approximately 5 mm away from the engine block.
CAUTION: Moving the wire further away could cause damage to electronic systems. (more…)
