Long start
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Junior User
Joined: Jun 2010
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Long start
I have done searches and what not on this. I did check the HPOP level by removing the allen bolt on top and the level correct. I then changed to the full synthetic oil. This was about a month or two ago and this morning it was unusually long maybe 10+ sec of turning it over before it actually hit( I had the block heater plugged in). After I was done driving when I got back in the truck it was obviously warm and when it was turning over it was much quicker but still maybe 5-7sec before it hit.
Any other suggestions or even answers would be appreciated. Thank you.
Any other suggestions or even answers would be appreciated. Thank you.
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
If there is this is my theory and just a theory. Having a long crank time after having the heater plugged in all night could mean low compression. The first few revolutions is dumping fuel in the cylinders and that fluid is essentially helping to seal the rings a bit better and the compression rises to the point that it starts. It's the compression of the fuel that raises it to the temp of ignition. Low compressin will also cause longer starts even with properly working GPR and GPs.
I'm not saying low compression is your problem but it can be and since others will read this I just wanted to put it out here.
10 seconds when cold and 5-7 seconds after being plugged in is not a really bad situation, but it should start quicker.
How long do you give the GPs to heat before you try to start. I wait 30 to 40 seconds when it is below 40°.
By the way, plugging in 2 to 3 hours before first start of the day should be sufficient.
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Junior User
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That is a very good thought about the compression but my fuel milage is pretty consistent and its not pumping out smoke.
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Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
Are you saying that you are not pumping out white smoke while cranking before it starts. If so that means the injectors aren't firing. Maybe it's taking a bit longer for the HPOP to build enough pressure (approx 500 PSI) to operate the injectors. To be able to monitor the ICP while cranking would be nice. Where in GA are you? Maybe someone close by with AE would be willing to help you out.
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Junior User
Joined: Jun 2010
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I live near Kennesaw in GA. When it is cold out you can see alittle white smoke but I think that is due to the difference in temp like when a gas vehicle starts up when it cold it always pumps out white smoke until it heats up thats what mine looks like in winter time.
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
Just to clarify I am talking about pumping out white smoke before it starts. The white smoke before it starts indicates the injectors are firing. The white smoke would smell like diesel fuel because that's what it is, unburnt and as a vapor mist. No diesel vapor mist before it starts means injectors are not firing. Once the HPOP has built up approx. 500 PSI then it will have enough pressure to drive the injector intensifier piston with enough force to inject enough fuel to start.
Also there is a fine line between enough fuel to start and not quite enough to start. There may be just a small amount of white smoke but that may mean the injectors are operating but not delivering enough fuel to start. It takes a certain amount of fuel in the cylinder when approaching TDC to compress and generate enough heat to ignite. Not enough fuel for ignition and the fuel will just be pumped out the exhaust.
Without the use of a scan tool it will be very difficult to determine what is causing the longer then usual crank time to start.
Also there is a fine line between enough fuel to start and not quite enough to start. There may be just a small amount of white smoke but that may mean the injectors are operating but not delivering enough fuel to start. It takes a certain amount of fuel in the cylinder when approaching TDC to compress and generate enough heat to ignite. Not enough fuel for ignition and the fuel will just be pumped out the exhaust.
Without the use of a scan tool it will be very difficult to determine what is causing the longer then usual crank time to start.
Elder User
Joined: Nov 2006
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From: Mission, BC
im not sure if you know, but the AE scanner is used for more than checking codes, it gives you real time readings of things happening inside the engine.. the WTS light means nothing, its just a reminder.. in no way does it reflect the status of the glow plugs... unless it doesnt come on at all... i think