spiking fuel pressure

Re: spiking fuel pressure

by Garrett Wysocki » 7 years ago

Garrett Wysocki

1 572 1.45k

I had that issue after installing a new pump but it stabilized around 4 psi after a few hours of run time.

Re: spiking fuel pressure

by charles pierce » 7 years ago

charles pierce

2 10 0

thanks, flew for 1.5 this morning with no problem 4.3 - 4.4 psi no spikes. will see how it does tomorrow

Re: spiking fuel pressure

by Roger Lee » 7 years ago

Roger Lee

131 5.38k 5.44k

It may be air, but many times spiking can come from poor electrical contacts even when they feel solid. I’ve had a couple of ghost like this and all it took was a squeeze of the pliers on an electrical connection that I thought was solid.

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Roger Lee
LSRM-A & Rotax Instructor & Rotax IRC
Tucson, AZ Ryan Airfield (KRYN)
520-349-7056 Cell

Re: spiking fuel pressure

by charles pierce » 7 years ago

charles pierce

2 10 0

thanks roger. i have the vdo pressure xmitter with the ring terminals that tighten up good. i have to think it was air in the hose as i have flown almost 3 hours since I've seen any spiking. i think where my alarm came from was that my eis upper pressure limit warning was set at 5.5 psi and i don't think that when there was spiking it
ever went above the 7.25 limit for the new pump. red flashing lights always get my attention.