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Scott W.
Scott W., Ford Technician
Category: Ford
Satisfied Customers: 3315
Experience:  28 yrs. experience as Ford ASE Master Technician. Accolades include being a 2005 Ford PTS Regional Finalist and 2006 ASE Ford National Technician.
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Ford: We changed front crankshaft seal in 2002 f350 7.3 and

Customer Question

We changed front crankshaft seal in 2002 f350 7.3 and now it won't turn over....Can't get it to start.... Tried to manually turn it over and can't at this point... Any suggestions?
Submitted: 1 year ago.
Category: Ford
Expert:  Scott W. replied 1 year ago.
Hello my name is Scott
Expert:  Scott W. replied 1 year ago.
From your description it sounds like you may have a worn oil pump, when you removed the seal the oil drained out and now won't prime. Or the cam sensor wiring or sensor was disconnected or broken. Does the oil pressure come up in the dash while cranking the engine over?
Customer: replied 1 year ago.
It won't crank over
Expert:  Scott W. replied 1 year ago.
You mean the engine won't turn with a breaker bar on the front crank bolt?
Customer: replied 1 year ago.
Right --it will not turn
Expert:  Scott W. replied 1 year ago.
What exactly was done during the removal of the seal, was the oil pump pulled out?
Customer: replied 1 year ago.
Yes the oil pump was pulled out
Expert:  Scott W. replied 1 year ago.
I have never seen this before, did you disassemble it to make sure the oil pump is not binding?
Expert:  Scott W. replied 1 year ago.
Ok just looked at workshop manual, big caution pointing out the inner gerotor gear should only go on one way, I suspect this could be the cause.
Customer: replied 1 year ago.
Will double check now...
but had changed the oil too & it hasn't started enough to prime
Had some1 else say that it may be hydro locked, and to check glow plugs....
Thought originally that it didn't have enough juice to crank b/c it was clicking & starter was hesitating --put boost pack on one battery & it's sound just sped up but still would not actually turn over
For good measure starter has lifetime warranty so swapped w/a new one .....
Expert:  Scott W. replied 1 year ago.
I will give you the oil pump instructions so you can see what I am talking about.
Expert:  Scott W. replied 1 year ago.
Here are the instructions.
Customer: replied 1 year ago.
Well checked glow plugs and one was covered n oil... But tested & it works--
When took harmonic balancer off & glow plug out-- can manually turn motor over some now...
Customer: replied 1 year ago.
So far all glow plugs coated in oil
Expert:  Scott W. replied 1 year ago.
Are the pump gears installed correctly, looking for oil on the glow plugs can be difficult because when you remove them, oil runs down the glow plugs.
Expert:  Scott W. replied 1 year ago.
Let me know, thanks Scott
Customer: replied 1 year ago.
Well, I think we may have figured out the problem... Needs a new sleeve...or at least part of the problem...Thanks 4 trying though
Expert:  Scott W. replied 1 year ago.
What sleeve ae you talking about?
Customer: replied 1 year ago.
The one that comes with the seal.
Expert:  Scott W. replied 1 year ago.
do you need any more help or are you all set?
Customer: replied 1 year ago.
Well I got it going but one quick thing. What would make it slow to start. Like it crank over a little more than normal.
Expert:  Scott W. replied 1 year ago.
Air in the high pressure oil system will make the engine crank over a lot longer because it has to compress the air to build the oil pressure to start. Usually driving 10-15 miles will bleed the air out.
Customer: replied 1 year ago.
Cool thanks.ill try that.
Expert:  Scott W. replied 1 year ago.
Thanks if you need anymore help just ask.
Expert:  Scott W. replied 1 year ago.
Thanks if you need anymore help just ask.
Customer: replied 1 year ago.
Are u still there it is still leaking.
Expert:  Scott W. replied 1 year ago.
Yes Iam here. You replaced the front seal and now it is still leaking correct?
Customer: replied 1 year ago.
Yes
Expert:  Scott W. replied 1 year ago.
Here are the instructions step by step if you need them, if you have any more questions just ask.

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