Injector hold design change causing oring issues????

lmorris · May 29, 2015

I currently have a 2004 F350 in my bay. This thing has a long history of people trying to fix a hot stall issue. Before the customer bought the truck it had a 2007 long block put in it. After 2 dealerships spent a week each and both coming up with the same diagnosis, timing issues, he had the the short block replaced by some independent re-builder here in Edmonton that offered a better warranty. After trips to 2 dealerships in the U.S. and a few injectors replaced, he made it to Arizona where he got to talking with someone from Bulletproof Diesel because he was still having this stalling issue. They told him it was the new style injector hold downs that were miss-aligning the injectors causing o-ring sealing issues. They sold him a set of old style hold downs and installed them with new o-rings. He flew back home and left them the truck. After a month of them driving it, they claimed there were no more issues, so he flew back down to get the truck. There is more to this story, but I have that posted in "What's in your bay". MY point is that I have never heard this before, and an extensive search of the interwebs has come up dry. Anyone ever hear of this?

Matt Saunoras · May 29, 2015

Nothing I ever heard about. The only thing I am aware of are the 2 styles of hold downs that we all know of. T45 for commonized heads, T40 for non-commonized.Now there are 20mm non commonized heads if you bought a new Ford part ending in DA or ARM. They still take T40 hold downs. The best way to identify is the rocker box. They are not interchangeable (the dowels do not line up).13mm M10 rocker box bolts mean commonized heads.

lmorris · November 2, 2015

So this guy comes back in to talk to me today about this injector hold down issue. He wanted to know if I knew of any experts in the field that he could use as a witness in a court case against the Dealership that put the engine in. I still haven't been able to find any info on this topic. Sometimes I think these so called "Aftermarket Diesel specialists" like to make false claims just to drum up business.

Keith Browning · November 5, 2015

You didn't mention if the truck is fixed now but I assume that it is. Personally, I would not get involved with someone else's problems - especially legal ones. Just sayin.