Compression Ignition Addict
Join Date: Aug 2007
Location: New Orleans/Baton Rouge, LA
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Long crank times when COLD
What causes long or extended crank times when motor is cold...?
Cranking times are perfectly normal when motor is warm and very rarely normal when motor is cold. I know this is not "normal" as this issue just started occurring this year over the past few months. I know that leaking dummy plugs, standpipes, and the all too common STC fitting are all causes of long crank times, but I was under the assumption that a leaking STC fitting only causes long crank times when the motor is warm. So, can the STC fitting be the cause of long crank times when the motor is cold?
The dummy plugs and standpipes are the only other common things I can think of that can cause this issue. I have already replaced the drivers side with the updated dummy plug and standpipe when I was in there for the #8 injector, but I haven't touched the passenger side yet. I also have the updated FPR blue spring to bump up the fuel pressure.
The glow plugs and GPCM seem to be working properly according to the AE software. Truck in sig. has almost 80K miles.
'06 F-250 CC/SB Lariat 4x4, Amarillo Ed.
SCT X-Cal 3 tuned by Matt@Gearhead(Extreme SRL)
Rize 10" 4-link
Rize dual steer-stab.
Rize ladder bars
UCF oring'd cylinder heads
Complete EGR delete
Powerslot Cryo's w/ Hawk pads
20x10 XD Monsters
38x15.50x20 Toyo MT's
4" MBRP 304 SS T/B exhaust
Autometer Nexus(Boost, EGT, Trans, Fuel)
OUO driveline drop
Recon smoked mirror/cab lights
'08 taillights, tailgate w/step&camera, PF/PT mirrors