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  #1  
Old 08-19-2010, 05:03 PM
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Default 8.3 Cummins - More Problems!! Chris help

There were four lines and two banjo bolts on my secondary filter on my 8.3 cummins. One banjo bolt was the filter inlet from lift pump and the second line (one with yellow ring in pics) was a feed to two solenoid for what I believe is fuel for cold starts below 40 degrees, the second banjo bolt had a line out of the filter to the IP and a return line from the injectors. This second banjo bolt was modified per Frybid cummins direction. My problem is now that my secondary filter is now on the vacuum side of the lift pump instead of pressure side I believe there will be no fuel supplied to the solenoids for cold start worse yet when they open it will let air from the intake in to the filter if I am thinking correctly. Chris can I take the hollow bolt out of the banjo bolt and replace it with a shorter solid bolt as I did on the second banjo bolt. Then take that line to the two solenoids and T it in between the lift pump and IP?
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1998 40 foot Newmar Dutch Star motorhome
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low restrction exhaust and Frybrid 3 valve kit.
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Old 08-20-2010, 08:07 AM
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Do you have a fuel system diagram becasuew I am having trouble visualizing how there would be a line feeding fuel into the intake for cold starts. PM me your number.
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Old 08-20-2010, 08:47 AM
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Chris this is the diagram I have.

Thanks Ken
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1998 40 foot Newmar Dutch Star motorhome
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low restrction exhaust and Frybrid 3 valve kit.
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Old 08-20-2010, 12:02 PM
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Interesting. I have never seen an injector in the intake manifold. It would appear that you need to supply that line with diesel, that said if it only comes on at cold start and cold starts would be on diesel anyway, could you not connect that line post feed valve.
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Old 08-20-2010, 01:22 PM
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The line goes to a solenoid from there to a T from the T to two glow plugs that are tapped in the side to accept the line from solenoid. The supply line would need to be post lift pump? If it needs pressure to feed the solenoid?

Thanks
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1998 40 foot Newmar Dutch Star motorhome
8.3 Cummins with Banks Kit, air filter setup off of a Kenworth,
low restrction exhaust and Frybrid 3 valve kit.
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Old 08-21-2010, 06:54 AM
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Chris
Is my last post correct about post LP for the T to feed solenoid?

Thanks for the help
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1998 40 foot Newmar Dutch Star motorhome
8.3 Cummins with Banks Kit, air filter setup off of a Kenworth,
low restrction exhaust and Frybrid 3 valve kit.
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Old 08-21-2010, 07:06 AM
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Yes sir, on the pressure side of the LP.
Do you know what controls the solenoid, is it ambient temp or motor temp?
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Last edited by cgoodwin; 08-21-2010 at 08:07 AM.
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Old 08-21-2010, 07:33 AM
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Have not found out for sure. One person on the web said intake temp. Have you ever seen glow plugs like this with the line in the side?
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1998 40 foot Newmar Dutch Star motorhome
8.3 Cummins with Banks Kit, air filter setup off of a Kenworth,
low restrction exhaust and Frybrid 3 valve kit.

Last edited by ckcrouse; 08-21-2010 at 07:40 AM. Reason: add to
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Old 08-21-2010, 08:00 AM
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No, am searching it now, either way it shoudl not matter as you will always be starting on diesel when the ambient, coolant and or engine temp are low enough to need aid.
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Old 08-21-2010, 08:07 AM
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I can find reference to "Cold start valves" but little other info, do you have a link to any infor or threads on the device I can reverse engineer? I can't call Cummins until Monday.

PS. What is up with the broken avatar?
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-HAL9000

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