Problem with cartech FMU

[Holden]

This sounds to me like the first case of a Cartech FPR breaking. I'm pretty shocked, but that's all that could explain this.

Maybe you could replace the diaphragm or get a new one for swap.

Greg

[JRCivic]

Hooper,

Call me tomorrow at the shop and we can do a bit of diagnosis. I want to make sure that we diagnose the problem perfectly before we jump to conclusions. I have not had ANY problems with the Cartech regulators so far... but I guess there is a first time for everything.

(205) 798-0112
Jim


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'93 Civic Si H/B with B18C1, JRSC @ 8psi
Best 1320: 12.68 at 110 mph

[Joe/UK]

I re-read this a few times - and it sounds like a piece of crud has managed to get into the lines when you changed the filter, passed through your lines and lodged in the diaphram of the cartech.

Im no expert, but the evidence points to "crud".

[hooper]

Well, the JR unit works just as it used to. There was no crud inside the cartech. I did find a small crack in one of the little barb fittings, but nothing that cause a vacuum leak. I'll replace it anyway.
So, I'm gonna have to inspect everything from end to end. That means taking that big ass bosch pump out of the tank, too!
I hope I find a definate cause for the problem, as opposed to it suddenly working right again.
Maybe I've just done something super stupid again, like plugging in the wrong connectors, like I did on poor Jay's car. What a dumb ass I am!

[hooper]

Well, after totally disassembling the under-hood portion of the fuel system, I found one small, flat disc of dried honda bond in the fuel rail. Apparently, it came from the threaded AN fittings I installed on the end of the rail. I guess I shouldn't have used sealer in the threads, or at least should have been more careful.
However, I broke one of the small brass barb fittings on the Cartech in the process, so I can't re-install it to check my fuel pressures. I'll have to use the JR unit until I get a replacement from Bell Engineering.
Hopefully that will take care of it.
Thanks to all who helped. Jim, thanks for your patience with my phone calls.
Joe/UK, you called it...
Phil

[JRCivic]

Phil,

Always glad to help. Let me know how it turns out.


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'93 Civic Si H/B with B18C1, JRSC @ 8psi
Best 1320: 12.68 at 110 mph