Question about Isuzu Rodeo
The glow plugs should only light for a maximum of around 20 seconds prior to starting the vehicle.
The Glow (or heater) plugs are used to aid cold starting, being activated in certain cold engine conditions. The glow plugs can operate in several ways but the most common is to switch them on during cranking or while the ignition is switched on. The components will reach their operating temperature in a matter of seconds.
The glow plugs are wired in series and are fed with battery voltage for a set period of time, which is determined by the 'glow plug timer relay'.
I could not recommend the solution you have adopted with the button as the relay is the correct way to activate the plugs. It is also possible however that the problem you are experiencing may be unrelated to the plugs as the car is starting after you prime the pump. You should check your diesel filter to ensure it has not picked up water from numerous fills or other debris - drain and then change the filter to rule out any cause of this nature.
I would also advise you to revert back to the proper relay timer method for activating and deactivating the heater plugs. Just put a new relay in!
Hope this helps. Please remember to rate my answer. Many Thanks.
Posted on Jul 18, 2009
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Posted on Jan 02, 2017
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