Just had my pog 406 2.1 looked at for a smoking problem It has on low revs, been advised that it is the cold start mechanism is sticking on? (What ever this is) So my question is! What is this cold start thing is there such a thing on a diesel and if so can the average Joey in the street fix it or is the garage after work!!
cold start 406 diesel
Dec 03, 2006
5 Replies
I expect they mean the glow plugs are staying powered up. This may show up as the light being on all the time or if the relay has stuck on, there might not be an indication. Either pull the relay out and see if the smoke stops or better still measure the voltage across the glow plugs and see if they are telling the truth or not.
You will have to find out the way to do this yourself as I have neither a
406 or any other diesel pug but it should be straight forward especially if you read the workshop manual covering the diesel engine.Bob
If the glow plugs are staying on when they should not it is no the fault of the plugs but something like the relay.
Pete
What? To start a diesel you need some heat in the cylinders to ignite the fuel when it is injected. You can do this by cranking on the starter alone, but usually it is done with glow plugs that are heated for a short time before and after turning the engine over by means of a prestart sequence controlled by a relay. Once a diesel engine is started it will run until fuel is shut off.
What most modern diesl cars have is a fast-idle setup so that they reach optimum temperature faster. Once the engine is hot enough to run the heater it drops back down to normal idling speed.
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