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Unread 06-26-2015, 09:22 AM   #1
bersh
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2008 WK 
 
Join Date: May 2014
Location: Houghton, MI
Posts: 284
How to crank CRD over without fuel

I'm going to be pulling all of the injectors out of my 08 CRD this weekend to replace the copper orings. For anyone that hasn't followed my "Stuck CRD Injector" thread, I have one injector with a leaking oring and the injector was fused in place by the fuel/carbon paste that was formed. I soaked the injector for over a week with various solvents, and finally got it out yesterday with the use of an injector puller. As much as I tried to clean up the solvent that was in the area, I'm sure some of it leaked into the cylinder when I pulled the injector. Also, given how wet the entire injector body was when it came out, I have a feeling that quite a bit of the solvent seeped into the cylinder before I pulled the injector. Also, once everything is buttoned up, I intend to change the oil as I'm sure it has been contaminated by said solvent.

I have an oil extractor vacuum and I intend to snake the hose down into the cylinder and suck out as much solvent as I can, but I know this won't get it all. With that being the case, I'd like to be able to crank the motor with the injector out to push out anything that may be left in the cylinder, but don't want it shooting fuel at 20k psi in the process. Is there a way to pull a fuse or otherwise disable the fuel system so I can crank it over a couple times?

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Unread 06-26-2015, 10:05 AM   #2
ggrassmid
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2008 WK 
 
Join Date: Apr 2014
Location: Grand Rapids, Michigan
Posts: 294
unplug the fuel pump at the tank; or find the relay, which would be easier. Not sure if it will turn over long enough to push out the solvent, or if a code will be thrown right away keeping it from turning over.
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