LB7: Can you use glowplug compression test to locate lifted cup?

d-max joe

Member
Feb 6, 2009
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baltimore,md
My coolant system has been pressuring up quick and alot. Loosing coolant. Motor has only like 9k on it and its studed. I don't think it's a hg. I thinking injector cup might have lifted. Does anyone know if you can use glowplug compression test to see if the cup is lifted? Thanks for any help
 

d-max joe

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Feb 6, 2009
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baltimore,md
Really ? I have had the number 7 cyl. Reading around +6-7 before it even started pressuring up .sense I put the injectors in. I even tore it back down n got another injector n put my nozzle in it and still read high. But maybe something is up for sure now.
 

bullfrogjohnson

Big Girl!
Nov 20, 2006
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Locust, NC
Really ? I have had the number 7 cyl. Reading around +6-7 before it even started pressuring up .sense I put the injectors in. I even tore it back down n got another injector n put my nozzle in it and still read high. But maybe something is up for sure now.

Could be your valve lash causing the bad balance rate. Is it burning coolant or coming out the expansion tank?
 

d-max joe

Member
Feb 6, 2009
341
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baltimore,md
I know once it pressures up it comes from water pump area or some hose by there n I have to relive the pressure so it stops. But then when I relive it it blows out of coolant tank hose with lots of pressure.