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Fuel pump fuse blows out at each start
Hi all, can someone please point me in direction of troubleshooting of at each start fuel pump fuse blows out, starter feels sluggish in rotating the prop, battery is sufficiently charged. Thanks in advance.
Rds |
Fuel pump fuse blows when? At master switch on, or when key switch is turned to rotate engine at startup?
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Something is pulling your battery voltage low.
Either it isn't as fully charged as you think, or you have a poor battery cable connection (power or ground). |
Check all battery and starter cables and connections, both positive and negative.
What size fuse is blowing, 5 amps? It is strange that the fuel pump fuse would blow unless the pump draws more current as the voltage drops. |
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If P is somewhat a constant, as in the power in watts required to make a device operate under it's normal load (in this case , the fuel pump), and the voltage dips, the current will increase (within the limits of the ability for the battery to supply it anyway) |
Love this forum. Its like when I was a little kid watching Mr. Wizard... :D
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I start testing everything tomm, thx all
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Is this an initial startup, or did the problem develop. Initial startup after construction suggests a wiring error or wiring damage (cut though insulation to ground?). If it developed at least you know it was right when you finished construction and I?d check for a ground with the fuel pump motor in the circuit and then out to see if it?s the fuel pump motor or wiring.
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