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Originally Posted by Reprobate
Thanks for all of the feedback, well wishes and information. It turns out that it was the same problem again but a different injector seal and O ring. They are taking more time to test drive it and I should get it back tomorrow. I'm told that they don't know why this is happening. The only theory is that the seals are defective.
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The seals are $3 each. I don’t know why they wouldn’t have replaced all 4 of them in the first place. I seriously doubt they got defective seals. They are just hard to install without damaging them. You can damage them putting them on the injector and then you can damage them when putting the injectors back into the heads. I did a dry compression and leak down on mine before putting the rest of the engine back together to be sure I didn’t damage a seal when putting it back in the head.