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Compression leak at #6 injector

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Old Nov 2, 2010 | 06:02 PM
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Compression leak at #6 injector

I FINALLY put my DDP stage 3 injectors in today.
I made the nifty little injector pulling tool and the first five came out smooth.
The sixth injector was close to impossible, the injector started turning with the hold down nut and it took a lot more than 45 foot pounds of torque to remove it. Cleaned it up a little, put some WD40 in there and put the new injector in. Seemed a little harder to push down than the rest. Tightened the nut to 45 and fired it up. Now I have compression blowing around the injector.
Do I tighten it up some more or pull it back apart and see if there is a piece of carbon under the washer? Advise me guys..........
Thanks.
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Old Nov 2, 2010 | 06:04 PM
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It sounds like the bore is dirty, you need to pull the injector and clean out the bore with a wire brush.
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Old Nov 2, 2010 | 06:07 PM
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From: port crane, NY
What she said^^^^
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Old Nov 2, 2010 | 06:12 PM
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Originally Posted by wannadiesel
It sounds like the bore is dirty, you need to pull the injector and clean out the bore with a wire brush.
Probably be Thursday morning before I can do that.
Will the washer still be good?
I suppose it would be a bad idea to drive it tomorrow.

Got an S300 and 4" exhaust to go on too.
Can't wait to see what drama unfolds with that.
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Old Nov 2, 2010 | 06:15 PM
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From: New Holland, PA
The washer will still seal OK.
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Old Nov 3, 2010 | 07:10 AM
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From: West Palm Beach, Florida
Originally Posted by theidlemind

Got an S300 and 4" exhaust to go on too.
Can't wait to see what drama unfolds with that.
Nice!!!
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Old Nov 4, 2010 | 08:03 PM
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D'oh (in my best Homer Simpson impersonation ever).
Walked into the shop this morning and one of the first things I notice is a small copper washer on the ground. It was a curiosity (I think I'm pretty observant), but I didn't make the connection until I pulled the #6 injector again and noticed...........no washer.
Guys and gals, the washers are necessary. Put it in after I cleaned the bore, started up and now runs like my old Dodge Dart 340 Swinger did. Wow.
Now I gotta figure out what to do about the traction problem I now have.
S300 swap is mostly done today.
May actually have to dyno this thing someday.
Thanks for the help!
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Old Nov 4, 2010 | 08:32 PM
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From: Seattle, WA.
Did you have a good look at the tip of the injector? If it was not buggered up you got lucky.
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Old Nov 5, 2010 | 06:17 AM
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Tip looked good, I was worried about that.
Runs a lot smoother, seems like I have a haze out the pipe instead of a cloud now. Better burn?
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Old Nov 5, 2010 | 10:58 AM
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From: Ida Grove, IA
Originally Posted by TLRMAN
Did you have a good look at the tip of the injector? If it was not buggered up you got lucky.
From the nozzle hitting the piston?

I have measured it all out and there is ample clearance with no washer at all.
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Old Nov 5, 2010 | 11:44 AM
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From: Tijeras, New Mexico, 7,000ft up
Originally Posted by theidlemind
Tip looked good, I was worried about that.
Runs a lot smoother, seems like I have a haze out the pipe instead of a cloud now. Better burn?
Better atomization, more complete combustion.
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