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Old 10-20-2012, 06:52 PM   #31 (permalink)
racer55
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FSO-Fuel Shut Off solenoid
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Old 10-20-2012, 08:48 PM   #32 (permalink)
Bob_wewer
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Yes!

Quote:
Originally Posted by racer55 View Post
FSO-Fuel Shut Off solenoid

It is coming back to me. On the IP - That may be the problem. I am going to check the wires first for problems.

Thank you!
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Old 10-21-2012, 12:31 PM   #33 (permalink)
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The no start happens so rarely I forget all that I have done to analyze. On one occasion when it happened I was able to swop out a fuel shut-off solenoid from a runner to no avail. I am pretty sure I ruled out the unit itself. I will focus on the wires to the solenoid or something like that.
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Old 10-21-2012, 12:51 PM   #34 (permalink)
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Quote:
Originally Posted by chevybobgreaser View Post
The no start happens so rarely I forget all that I have done to analyze. On one occasion when it happened I was able to swop out a fuel shut-off solenoid from a runner to no avail. I am pretty sure I ruled out the unit itself. I will focus on the wires to the solenoid or something like that.
If you have a spare FSOS consider cutting off the pintle at the shaft and eliminate the FSOS function entirely. The PMD is the primary fuel cut-off anyhow. FSOS is only a mechanical back up. That should speed up your diagnosis. ~FH
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Old 11-23-2012, 10:00 PM   #35 (permalink)
Bob_wewer
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I found a small leak in the supply line before the fuel manager. I think a bubble formed when the IP would pull after a loss of pressure and at start the air pocket would be pulled into the IP. It only did it a total of 4 times over six months. I think all is well now.

Thanks
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Old 11-23-2012, 11:35 PM   #36 (permalink)
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RE that "2000 RPM" test: I bought my truck with 140,000 miles, got rid of it
with 250,000, and it never would pass that test... still got the same pump,
never had an issue with it.
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Old 11-27-2012, 02:54 PM   #37 (permalink)
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Well that was not it. It has failed to start again. I guess I'll wait the 30 mins. and it should go. I guess I'll try the wiring to the Fuel Shut Off Solenoid or try putting in a chopped off one to test it.
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Old 11-27-2012, 04:15 PM   #38 (permalink)
racer55
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It is easier to remove the snap ring from the bottom of the FSO and take the pintle and spring out than it is to chop the pintle for testing purposes.
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96 Chevy C3500 Dually 6.5TD F Engine 4.11 Rear/5 Speed
Relocated PMD/Heatsink to Front Bumper #9 Resistor
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Kennedy special calibration fan clutch/Kennedy 20" steel fan
LeroyDiesel.com oil cooler kit
Diamond Eye 4" turbo back exhaust
2 1/2" crossover
High Idle Mod
Feed The Beast 2.0
EGT,Boost gauges
Diagnostic Checklist 2.0
OBD1 Codes
OBD2 Codes
6.5 FAQ
Carcode & TDCO Instructions

Last edited by racer55; 11-27-2012 at 04:15 PM.
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Old 11-27-2012, 06:48 PM   #39 (permalink)
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This may sound like witchcraft to you all, but I had a similar problem not to long ago. I kept noticing that if I jiggled the connection from my IP to the PMD extension cabling, it would restart. So, being a farmer, I pulled it into the shop and sprayed that connector out with WD-40. Problem solved. It's a long shot, but perhaps...
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Old 11-27-2012, 11:04 PM   #40 (permalink)
JMJNet
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I think all the diagnosis done before is out the drain.

We need to restart with electric, pmd, etc.
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