Big problem
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New User
Joined: Mar 2009
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Big problem
my 95 ford f-350 will start and run fine but when i kill it after running i have to wait untill the engine is cooled down completly for it to start again...does anybody know whats wrong with it?
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Joined: Nov 2001
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From: Ft Scott
Sounds like IPR o-rings are leaking. With a cold engine the oil is thick enough to build enough oil pressure to fire the injectors but once it heats up it thins out and leaks past them enough to keep it from starting. Once the engine is running the hpop has enough pressure to keep it running even with the bad o-rings.
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Joined: Sep 2006
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I had this same problem about a month ago. Blue Mule is right, IPR o-rings are bad. Fairly cheap and not to bad of a job. Took me about two hours taking my time, I pulled my fuel bowl, everything is alot easier to get at with it out of the way JMO.....
Post Fiend
Joined: Oct 2003
Posts: 5,903
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From: MICHIGAN
Welcome to FTE. I agree with these guys above. You need IPR o'rings.
Here's a link to more info:
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Here's a link to more info:
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Thread Starter
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New User
Joined: Mar 2009
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Sounds like IPR o-rings are leaking. With a cold engine the oil is thick enough to build enough oil pressure to fire the injectors but once it heats up it thins out and leaks past them enough to keep it from starting. Once the engine is running the hpop has enough pressure to keep it running even with the bad o-rings.
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New User
Joined: Mar 2009
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how many o-rings are in the IPR or am i going to have to buy a set and replace all the o-rings in the fuel injector system? is it a dealer item only?
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Post Fiend
Joined: Oct 2003
Posts: 5,903
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From: MICHIGAN
Dealer item and International Harvester only as far as I know.
Maybe othere will chime in with more vendors.
IPR O-Ring Kit (for when IPR valve replacement is not required)
* (Ford) F6TZ-9C977-AN (F6TZ-9C977-AA?)
* (International) 1825806C92 (1825806C91?)
Maybe othere will chime in with more vendors.
IPR O-Ring Kit (for when IPR valve replacement is not required)
* (Ford) F6TZ-9C977-AN (F6TZ-9C977-AA?)
* (International) 1825806C92 (1825806C91?)
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Joined: Aug 2006
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