Glow plug light
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Joined: Aug 2006
Posts: 17,398
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From: Whittier, CA
That sounds like a reasonable amount of time. But that just means the wait to start is over and you can crank. It does not mean the glow plugs are turned off. They can stay on up to 2 minutes.
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Joined: Mar 2007
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From: Claremore, OK
Also, a little experiment I've been trying the last couple of weeks. After the glow plug light goes out (stone cold starts) I look at my watch & count off another 10-15 seconds then turn the key to start. The truck will usually fire right off within a second or two instead of the normal 4-5 second crank that it usually does. I know it's because the GP are still heating the cylinders and more heat means better starting...just thought I'd share this little experiment/thought I've been toying with over the last couple of weeks.
Senior User
Joined: Nov 2011
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Also, a little experiment I've been trying the last couple of weeks. After the glow plug light goes out (stone cold starts) I look at my watch & count off another 10-15 seconds then turn the key to start. The truck will usually fire right off within a second or two instead of the normal 4-5 second crank that it usually does. I know it's because the GP are still heating the cylinders and more heat means better starting...just thought I'd share this little experiment/thought I've been toying with over the last couple of weeks.
Senior User
Joined: Aug 2011
Posts: 324
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From: NC
Also, a little experiment I've been trying the last couple of weeks. After the glow plug light goes out (stone cold starts) I look at my watch & count off another 10-15 seconds then turn the key to start. The truck will usually fire right off within a second or two instead of the normal 4-5 second crank that it usually does. I know it's because the GP are still heating the cylinders and more heat means better starting...just thought I'd share this little experiment/thought I've been toying with over the last couple of weeks.
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Junior User
Joined: Dec 2011
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I had been turning the key on, waiting for glow plug light to go off, turn the key to off and repeating this 3 times. Now I know all I have to do is leave the key on - very cool.
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Joined: Mar 2007
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From: Claremore, OK
That is what I do when I crank my engine, I wait for the glow plug light goes off, I then wait for the pumps and any noises from the fuel pump so that glow plugs are still warming up and there ain't any more drain from the battery except the glow plug. Once I finally turn the key she starts right up.
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