Turning Over To Long??
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Elder User
Joined: Sep 2008
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Turning Over To Long??
Just wondering if I need to dig further into maybe my GPR or my fuel filter or something. If my truck is warmed up and I shut it off in a drive through or something for 1-2 min and try to fire it back up without waiting got the glowplugs it seems to always turn over for a long time. By long time I mean 2-3 solid secs, where usually I would expect it to fire immediately. What do you guys think?
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Elder User
Joined: Sep 2008
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) Thanks, just asking cause my service advisor, 99 Dodge Cummins, who works at Chevy says his always fires immediately no matter what. If its just a Ford thing I will learn to live with it, just curious. P.S.-How often do you change your fuel filter?
Of the next Riffraff East
Joined: Oct 2004
Posts: 8,679
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From: Concord NC
.......my first time owning any diesel, it is normal for the PSD's to crank a little? Cause sometimes it fires immediately, even when cold in the morning(35-40*F), ............cause my service advisor, 99 Dodge Cummins, who works at Chevy says his always fires immediately no matter what...... P.S.-How often do you change your fuel filter?
I can my fuel filter about every 10k. A little more often lately as I have been changing with oil change at 7500 miles.
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Elder User
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Congrate on your first diesel, you may try turning the key on for a second or two to allow the fuel pressure to build before engaging the starter. Don't know what to tell you about your servic advisor other than he would have to prove that to me.
I can my fuel filter about every 10k. A little more often lately as I have been changing with oil change at 7500 miles.
I can my fuel filter about every 10k. A little more often lately as I have been changing with oil change at 7500 miles.
Of the next Riffraff East
Joined: Oct 2004
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From: Concord NC
You still have a fuel pump mounted under the driver on the frame rail, High Pressure Oil Pump (HPOP) That feeds the injectors, Low pressure pump that feeds the HPOP and the rest of the engine.
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Does the stock system have enough grunt to supply a tuner with out burning up? What else does the low pressure pump supply? Why do the call it a high pressure OIL pump?
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Post Fiend
Joined: Mar 2007
Posts: 26,966
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From: Texas
Cranking for a couple of seconds is normal. The fuel injectors are fired off of high pressure oil which is pump driven. As you crank, the oil pressure in the rails builds pressure to fire the injectors.
Our fuel pump is just an electric one mounted on the frame approximately under the drivers seat. If it goes out, no need to drop the tank to change it. High horsepower will not kill the fuel pump, or the oil pumps, but it is possible to exceed their capacity. Upgrades are available, but it will take more than just a chip to get to the point you need to worry about that.
Our fuel pump is just an electric one mounted on the frame approximately under the drivers seat. If it goes out, no need to drop the tank to change it. High horsepower will not kill the fuel pump, or the oil pumps, but it is possible to exceed their capacity. Upgrades are available, but it will take more than just a chip to get to the point you need to worry about that.
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Posting Guru
Joined: Dec 2005
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From: Parker, CO
The HPOP supplies oil to the injectors, they use that to fire the fuel into the cylinders. The HPOP can usually keep up with a DP, but on 140 race, its using all the oil the HPOP can provide. Some run duel HPOP to solve this problem.
More Turbo
Joined: Jan 2005
Posts: 572
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From: Carthage, Mo
My truck will start quicker if it's already warm if I don't wait for the GP to cycle. However it's not always the same. Sometimes it will fire immediately & sometimes it takes 2-3 seconds. Haven't been able to nail down a definate pattern, it's just the way it is.
