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1mainiac 08-06-2014 10:52 PM

Last time I had this problem the customer had just left Walmart and sucked some shopping bags into his intake. So they would suck up and plug the filter then fall back down and it would run fine for a while and do it again.

akeyzoo 08-07-2014 12:08 AM

An idea (not a solution). Since changing the filter seemed to have gotten it to start, perhaps there is indeed an issue with fuel draining out and causing issues with air in the lines. Do you have a priming pump at the fuel filter? If so, next time it doesnt start normally, go operate the priming pump (until it is almost too hard to pump) and give her a try. May not treat the cause, but will keep you on the road. When I changed a filter/separator once and didn't properly prime the system, there was no amount of cranking that would start my CAT.


Skip426 08-07-2014 01:21 AM

2 Attachment(s)
I've got a few things that may be of some help.
Another member reported that for his no start condition , disconnecting the wiring from the Injection Activation Pressure Sensor, set a code but the engine started.
I'll try and track his post and link you too it.

Skip426 08-07-2014 01:34 AM

In addition to what Chris has posted re-fuel filter. If you coach has a manual prime pump, and it was used to prime the filter and so force fuel into the cylinder head supply passage to the injectors and through the suspect pressure valve . If you have a repeat of the starting issue maybe a dozen pumps on the prime pump would help. I prime the fuel system, if the coach hasn't be started in over 2 weeks.
I'll post a picture of the pressure valve in the morning, I can't believe the mechanic didn't try to reach it from below ; or did he?:confused:

OLYLEN 08-07-2014 09:33 AM

HAVE you checked the exhaust brake? Not the switch the brake it self, needs lined every year.


elavin 08-07-2014 09:06 PM

Thanks everyone. No we don't have a manual pump prime. So far we haven't had any other problems. The thing is, that once we get started, it runs great.

Skip426 08-07-2014 09:10 PM

We're all hoping that you stay mobile.:thumb:

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