slow cranking, no real reason!?! - Ford Powerstroke Diesel Forum
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post #1 of 7 Old 03-23-2012, 02:43 PM Thread Starter
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slow cranking, no real reason!?!

I went to start my truck this moring and the thing would not start(but thats another issue all together), so anyways I was cranking the engine for about 10 minutes(not consecutivly), and for no real reasong it starting cranking very slowly, not the usual slow drain when your batteries are losing juice, and now I get home from work, it still cranking slowly, even with my wifes car jumped on the passenger side battery,, I'm not sure whats going on, it almost seems like its cranking off of one battery, they batteries are both brand new and the solenoid on the starter is also new,,, is there possibly a fuse that links the 2 batteries together, or did I fry my starter mabey????? both batteries read the same voltage with the key off 12.3, and the same with the key on 11.1,,, thanks

2003 F-350, 6.0L, 6.5" lift, 35x12.5/17's, Edge Evo, MBRB 4" Turbo back
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post #2 of 7 Old 03-25-2012, 08:04 AM Thread Starter
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bump,,, no sugestions?, can a starter crank slowly due to failure??, I've only ever seen them stop all together?,

2003 F-350, 6.0L, 6.5" lift, 35x12.5/17's, Edge Evo, MBRB 4" Turbo back
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post #3 of 7 Old 03-25-2012, 08:29 AM
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with electrical stuff, you just never know...

I would get both batteries load tested (yes even if they are new), then slow charge them to 100%. Check all your connections and grounds. If it still rolls slow, give the starter a sharp rap or two with a wooden handle and try again.

Is there any chance the thing is getting hydro locked? (any excessive smoke, fuel or coolant smell, coolant loss, etc...?)

MikeB

2005 F-250 6.0L, crew cab, long bed 4x4
completed in 2011: STC update, new IPR, BPD EGR cooler, oil cooler rebuild, 6.4 banjo bolts, blue spring update, SCT X3, Insight CTS, 58V FICM, CCV Mod, DIY coolant filter (now gone), refinished turbo
2012: ARP headstuds, OEM gaskets, standpipes and dummy plugs
2015: XDP coolant filter
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post #4 of 7 Old 03-25-2012, 08:34 AM
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I've experienced this happening to my wife's vehicle. The starter solenoid was shot. I jumped the solenoid and knew then that I had to replace it. If that isn't your problem, you may want to check your starter relay fuse as well and ensure it didn't blow. Another thing to check is grounding...is your battery grounded properly and is your engine grounded properly. Just some options to troubleshoot.
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post #5 of 7 Old 03-25-2012, 02:27 PM Thread Starter
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sounds good,, had both batteries tested today, there both good, I'm starting to think it may be the starter its self now,, its getting very hot, even with the slow cranking,,,,, what do you mean by hydro locked??,, when I tried to start it monday morning it way puking smoke out even with the engine just cranking over, how would I check if its hydro-locked?,,, I;ve always had a slow coolent leak although I'm sure its my EGR system plugged, but I topped up the system a few weeks ago and its sitting at the same level

2003 F-350, 6.0L, 6.5" lift, 35x12.5/17's, Edge Evo, MBRB 4" Turbo back
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post #6 of 7 Old 03-25-2012, 08:14 PM
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If it is rolling over slow, your starter will be drawing tons of current, that is why it is getting hot. You need to find out what other problem you have that is causing the slow cranking before you fry your starter (and maybe other stuff too).

If it is pouring smoke before it starts running, it sounds like you may have an injector dumping fuel into a cylinder or a leaking EGR cooler. What does the smoke smell like? Raw diesel or coolant? To see if it is getting hydrolocked you will need to pull your glowplugs and see if there is a bunch of liquid in a cylinder. You will trash the glowplug harness when you do this unless you are very careful, and then you will still likely mess it up. You can really hose up the engine if you keep cranking on it when it is hydrolocking, so you should figure out what is going on.

You really need to post all the info if you are looking for help. You failed to mention the loss of coolant and smoking. This (to me) would point to a leaking EGR cooler. You mentioned that you have a coolant leak and think it is the EGR cooler getting plugged up. This would not cause a leak if it were plugged up. What you likely have is a plugged up oil cooler, and this has caused the EGR cooler to overheat and start to fail. The failed EGR cooler will leak coolant into the exhaust side of the cooler, which will find its way into an open valve and into a cylinder (hydrolock).

Have you been monitoring the EOT/ECT delta? Have you scanned for codes? How does your FICM check out?

Hopefully a tech on this forum will chime in soon, but it sounds like EGR cooler to me...

MikeB

2005 F-250 6.0L, crew cab, long bed 4x4
completed in 2011: STC update, new IPR, BPD EGR cooler, oil cooler rebuild, 6.4 banjo bolts, blue spring update, SCT X3, Insight CTS, 58V FICM, CCV Mod, DIY coolant filter (now gone), refinished turbo
2012: ARP headstuds, OEM gaskets, standpipes and dummy plugs
2015: XDP coolant filter
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post #7 of 7 Old 03-28-2012, 02:18 PM Thread Starter
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fixed it, was the starter, thanks for the help

2003 F-350, 6.0L, 6.5" lift, 35x12.5/17's, Edge Evo, MBRB 4" Turbo back
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