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Fuel pressure problems continuing / possibly relocating the

 
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dan(at)syz.com
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PostPosted: Fri Feb 17, 2017 3:41 am    Post subject: Fuel pressure problems continuing / possibly relocating the Reply with quote

Hi everyone.

I thought I'd report back that I've pulled apart most of the fuel lines, including those in the tunnel and unfortunately haven't yet found any blockage or cause for the low pressure I'd been experiencing (the tunnel fuel filter is completely clean, and there don't seem to be any leaks or issues with any of the fuel connections). I'm still going to check further (and perhaps try bypassing a gascolator), but I seem to be quickly eliminating things my low fuel pressure problem is not likely caused by, rather than finding anything that it might be. One suspect (however unlikely) still remains with the one way bypass valve around the boost pump, since the boost pump seems to bring the pressure up, and the bypass valve is only used with the engine pump. But the valve seems to be cemented to the pump manifold with some sort of white compound, so I haven't been easily able to remove it to check. Or perhaps the engine pump itself could be a problem, though it's factory new, so I'm not sure how likely that is either.

But while I have everything apart, I'm thinking of possibly relocating my fuel flow transducer from the tunnel to somewhere after the engine pump (I'm not sure if the transducer is the culprit either, but putting it after the engine pump can't hurt, plus would give me more accurate readings with the boost pump on). But where are people putting it? The most convenient location in the engine compartment would be to mount it to a bracket on the engine mount and locate it right after the engine pump, on the way to the throttle body. But if it's right after the engine pump, would I really be accomplishing anything different than its current location right after the boost pump? Would the engine pump cause similar problems in transducer accuracy if the transducer is placed there?

Thanks!

Dan
---
Dan Charrois
President, Syzygy Research & Technology
Phone: 780-961-2213


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