Why does crank time vary?
Thread Starter
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Senior User
Joined: Aug 2004
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Why does crank time vary?
I mean typically it will crank in just a few seconds but lately when cold it has taken twice as long. Am I over thinking this or is this the beginning of something new. Aithough I have owned this truck since new I am an occasional driver and much more accustom to gassers just firing up. My truck typically behaves the same way but lately is noticeably longer.
Senior User
Joined: May 2004
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I was doing research on this today. My crank times can vary from immediate fire to 3-4 sec. From what I've read, it's not uncommon for 5-6 sec crank times and more common than you think for the randomness we're experiencing. I'll be interested to see what others have to say about it.
Hotshot
Joined: Apr 2010
Posts: 19,056
Likes: 235
From: Saratoga Springs,UT
the wrong oil filter cap can cause this
Also HPO Leak could do the same
those of you that have updated some of the HPO parts ie STC & Dummey plug & Standpipes thats Great but Oil Rails under the valve covers could leak at the top of the injectors and depending on what inject oring leaked the rail may drain alittle or Alot
Also HPO Leak could do the same
those of you that have updated some of the HPO parts ie STC & Dummey plug & Standpipes thats Great but Oil Rails under the valve covers could leak at the top of the injectors and depending on what inject oring leaked the rail may drain alittle or Alot
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Senior User
Joined: Aug 2004
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Hey Benny, thanks for jumpin in. What does that mean in English. How would yo go about further diagnosis?
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Senior User
Joined: May 2004
Posts: 313
Likes: 0
the wrong oil filter cap can cause this
Also HPO Leak could do the same
those of you that have updated some of the HPO parts ie STC & Dummey plug & Standpipes thats Great but Oil Rails under the valve covers could leak at the top of the injectors and depending on what inject oring leaked the rail may drain alittle or Alot
Also HPO Leak could do the same
those of you that have updated some of the HPO parts ie STC & Dummey plug & Standpipes thats Great but Oil Rails under the valve covers could leak at the top of the injectors and depending on what inject oring leaked the rail may drain alittle or Alot
I try to be optimistic, but when EACH LINK in the chain is weak, kinda means you got a bad chain.
BTW, I have the OEM cap and filter.
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Elder User
Joined: Apr 2012
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I mean typically it will crank in just a few seconds but lately when cold it has taken twice as long. Am I over thinking this or is this the beginning of something new. Aithough I have owned this truck since new I am an occasional driver and much more accustom to gassers just firing up. My truck typically behaves the same way but lately is noticeably longer.
taking longer and longer to start... over about 4 months. the high
pressure fitting on the HPOP was in pieces, it seems.
finally it went off for new EGR cooler, oil cooler, and head gaskets, etc.
now it starts fine, half second crank.
that is all i know about it from my experience.
Hotshot
Joined: Apr 2010
Posts: 19,056
Likes: 235
From: Saratoga Springs,UT
Id start with the oil filter cap do you know if OEM Cap????
An air test usually helps
HIGH PRESSURE OIL AIR FITTING SIZE FOR THE AIR LEAK TEST
M14x1.5 to a #4JIC fitting for 03 and early 04
M12x1.5 to a #4JIC fitting for late 04 and up
A LINK TO BUY THEM HPO ADDAPTERS
Amazon.com: OTC 6763 High Pressure Fuel Rail Adapters for Ford 6.0L: Automotive
Tool to close the IPR:
OTC 6764 Ford Diesel 6.0L IPR Controller / Tester | Multimeters, Amp Clamps, Test Leads
Post Fiend
Joined: Oct 2009
Posts: 12,123
Likes: 35
From: N. Fort Worth, tx
cranktimes very greatly.
its a huei system..
has to have good oil in it.
oil temp will change start times.
outside temp will change start times.
voltage available will change start times.
injector sticktion issue will change start times.
the list goes on.
in winter we can see 10sec start times just random.
its a huei system..
has to have good oil in it.
oil temp will change start times.
outside temp will change start times.
voltage available will change start times.
injector sticktion issue will change start times.
the list goes on.
in winter we can see 10sec start times just random.
Elder User
Joined: Apr 2012
Posts: 904
Likes: 1
this forum is a distillation of everything that can go wrong with a
6.0, culled from the entire set of 6.0 owners, everywhere.
now, if you have fully charged batteries, clean coolant, regularly
changed oil, good fuel filters, most of this ugliness will not darken
your door. if you don't pay scrupulous attention to these things,
your life will suck.
lets not forget something. TONS of these trucks were used by
construction companies, getting rode hard and put away wet.
and then sold.
if you bought one of these used, who maintained it before you did?
there were problems with the head bolts, especially the first couple
of years, but a lot of that can be traced to EGR cooler failure.
mine seems to be working pretty good at the moment, a month
and a half ago, i was sounding just like i suspect you feel.
once you spend a pail of money, it gets better.... i think.
Thread Starter
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Senior User
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Thanks for input. This morning I cranked right up. It was a lot cooler than the other day. I think I have a lot to learn about this truck. I really love this truck and am committed to it but with my limited knowledge it is easy for me to get a bit paranoid. I love the signature comparing it to the Apollo 13
laughing my head off
laughing my head off