Quote:
Originally Posted by boyt911sc
Phil,
The system pressure is not a function of temperature. The system fuel pressure remains the same when engine is cold or warm. Have you measured the SP at different operating temperatures and obtained different values? Keep us posted. Thanks.
Tony
|
Hi Tony,
Ya, I know it's not supposed to. Without knowing the extent of the debug done to this point, I was reaching out for an obscure scenario where the fuel pump is for some reason building more pressure as it warmed over a long time interval and someone had set the system pressure at a point when the pump wasn't up to max pressure but below system regulated pressure, really a far reaching thought, but who knows, in rare cases maybe there is a resistive or a connector that expands as it warms up improving contact and the fuel pump get more current as time goes on, again obscure and really a 1/100000 type of scenario as a fuel pump running that low a pressure would have terrible throttle response at all temperatures. Also, in my head I was thinking of a sticking system pressure valve that relaxes over temperature, again a 1/10000 scenario. I'm sure it's not as complicated as that, but it would be on my lists of tests after checking power feeds are good to the device, heating element is okay, the wur screen is clean, then system and control pressure over temperature just for good measure.
Phil