1st Generation Dodge Cummins 89-93 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with Rotary Injection Pumps

Cylinder # 6 not working please help

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Old Jan 21, 2011 | 02:51 PM
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Default Cylinder # 6 not working please help

1992 dodge 5.9 turbo Cylinder # 6 not working put new injector in and nothing. truck has power an runs good but when i come 2 a stop it starts shaking. I bleed the injectors all work fine
exept #6 any 1 has any idea Thank U
 
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Old Jan 21, 2011 | 03:08 PM
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Your sure that # 6 is not getting fuel? If not your next step is the pump. Im not a pump guy so i couldnt tell you if one cylinder will fail or not. Im not super experienced in VE pump stuff.
 
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Old Jan 21, 2011 | 04:03 PM
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# 6 injector is getting plenty off fuel
 
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Old Jan 21, 2011 | 04:31 PM
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Oh so your saying its just not firing?
 
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Old Jan 21, 2011 | 06:01 PM
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Have u done a comperssion check on that cylinder yet?
 
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Old Jan 21, 2011 | 09:10 PM
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no not yet
 
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Old Jan 21, 2011 | 09:12 PM
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Sounds like that may be the next thing in order. Valve lash check? Pulled the valve cover?
 
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Old Jan 21, 2011 | 09:26 PM
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Ok let's go back to High School auto shop class.

The 4 Strokes of a Engine
Intake
Compression
Power
Exhaust

If an engine is not running something is wrong with atleast one of these 4 strokes. Through elimination we can try to find which stroke is messed up.

Since it's getting fuel and I doubt something is wrong with the exhaust, something is either wrong with intake or compression. Something like a blown head gasket or a messed up intake valve. So if you check the compression in that cylinder that should give you your answer as to which stroke is messed up. Then through a little bit more checking you will be able to figure out what's actually wrong with the engine.
 
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Old Jan 21, 2011 | 10:28 PM
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Is it possible that its getting fuel to that injector but not enough to pop it open. Like having a piece of the shutoff solenoid in a delivery valve.
 
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Old Jan 23, 2011 | 05:32 PM
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any 1 know what the compression ratio is
 
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