Voltage To Bosch 044

[F6 RAPID]

Check the voltage at the pump with a multimeter.

My pumps were running only just on 11 volts each which didn't seem right to me.

I changed my earth and ran the relay direct to the battery, checked it again and now they are running at 13 volts..........

I use a relay with power and earth coming direct from the battery - no loss there! The noise from the pumps is now very consistent - until they heat up a lot and it is only then they whine a little.

[turbotrana]

He said it makes the same noise when the car is dead cold..so your theory goes out the window. There are about 50 of these units in service and nobody has had the problem you predicted...but as you said some people know it all.

Kev

Well you have offered no suggestion to rectify the problem. The whining is certainly not an isolated case from subsequest posts.

The best thing to help the problem is to feed the return line back to the tank (not the surge tank) and to have an intank pump that can supply around 5l per minuite fuel at 0psi to the surge tank.

You make up heat sinks for the pump.

The way the pump is mounted with rubber covering a portion of the pump impedes the pump getting rid of heat.

The surge tank and pump will also absorb heaps of heat from summer heated roads which does not help either.

The Nizpro setup has merit as the intank setups keep the pump cool.

[tab]

Most of the whining is coming from your posts.

You've mentioned your theory before and it has nothing to do with this thread, so please just get rid of the grudge and move along

[CV PERFORMANCE]

The Nizpro setup has merit as the intank setups keep the pump cool.

Never be as efficient as an external surge tank NEVER

CV PERFORMANCE