IPR problem i think

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Feb 28, 2016 | 07:36 AM

linn357

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IPR problem i think

I have a 1998 international rollback , motor is stamped 1997 . I cut the truck off 45 minutes later went to restart , engine turned over and no start so I was told by a local shop replace the cam sensor so I did and still nothing then someone said clean the ipr so I did still nothing . another told me I got a bad cam sensor so I went this time to dealership for it , put in now truck starts runs about 20 seconds and sounds like it coming apart , any help would be greatly appreciated . Thanks

Feb 28, 2016 | 08:46 AM

427 fordman

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From: Plankinton, SD

What does coming apart mean?? Did you disassemble the ipr and clean it? Did you put new orings on it? As much info as you can give us will help.

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Feb 28, 2016 | 08:56 AM

linn357

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took apart replaced o rings , cleaned and put back . now I start and it runs good for about 20 seconds then sounds like I'm getting a fuel knock .

Feb 28, 2016 | 11:41 AM

farmert

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From: western SD

What is the fuel pressure? Low fuel pressure can cause injector knock. It may be the cause of a hard start also.

Feb 28, 2016 | 11:57 AM

linn357

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Working on checking that , my gauge want read high pressure .

Feb 28, 2016 | 11:59 AM

linn357

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could the low fuel pressure come from the ipr valve ?

Feb 28, 2016 | 12:29 PM

97-psd

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From: knoxville, tn

Check the fuel filter and make sure it is not gummed up. You can check fuel pressure with a regular tire gauge. There is a shrader valve on the drivers side of the bowl. I think it is 20psi while cranking and a minimum of 40 while idling. Closer to 50 is better but it will run at 40.
Fuel pressure is not affected by the IPR.