SR3 Injection, Fuel Extraction....

[paulmj]

Chaps,

I have a connector marked Fuel Pump (for drain), or something like that, on the SR3. That implies that connecting something to it will allow me to run the injection pump and pump the fuel out.

The question is, does anyone know what should be connected to make that happen?

Cheers!

Paul

[BertBert]

It's usual to have two things. An electrical connection - sureseal for attaching a 12v battery and a fuel connection hopefully dry-break. So you attach the dry break fuel hose, then connect up a spare battery using a fly lead and pump out.

Bert

[nick997]

My 2004 SR4 had a T piece in the fuel line for draining the tank - pre-dating the widespread use of dry break fittings. I bought a metre or so of braided fuel hose with the correct sized fitting already assembled on to it by the helpful guys at Merlin and attached that whenever I wanted to drain the tank down.

It was running on carbs so might not be the same fitting that you have but hope this helps you.

[splitpin]

As said above ......... if no dry break, tee piece etc, just disconnect the fuel supply hose at some convenient position near the carbs / injection and use a length of cheapo hose with an appropriate connector long enough to drain into a jerry stood by; remember that as soon as you've connected the slave battery, it'll start pumping and flowing.

[BertBert]

pre-dry-break, we had a t-piece in-line. It was easier to unscrew the "cover" of the T than disconnect the fuel line.
Bert

[Jono450]

The Sureseal lead connects directly to the wiring loom and comes with a couple of crocodile clips on the other end and is available from Radical and the T-piece and rubber hose is available from Demon Tweeks as a kit, just search for Mocal fuel sampling kit.

[paulmj]

Thanks for that. So, basically, to run the pump, I need to attach 12v across that connector. Anyone know in which polarity? That is, should I apply + to the pin on the connector and - to the female or vice versa?

Thanks!

[double d racing]

Boring old bloke here............... a few things....

I'm not sure but it doesn't matter which electrical pin is which as you can change over the connections to the battery ( then mark the croc clips accordingly )
a furter thought is that the positive from the slave battery would be the shrouded pin in the connector ( is that the female? )
2. I put a switch inline close to the connector
3. I made long lead so the connections to the slave battery were nowhere near the fuel when sparks were made
4 Give yourself plenty of tubing so that you can cordinate it all along with switch on the power lead.
5 don't cross a HOT exhaust with either cable or tubing as the result may well get your attention....
Hope that helps
DD

[paulmj]

All good points.

I was just keen to avoid reversed polarity. But as it is a DC motor I guess the worst that will happen is that the pump will pump the wrong way.

Ta!

[BertBert]

Not sure how it is wired. But if it's just in parallel, one of the wires will be +ve when the pump is running normally from the battery. A voltmeter and you are away!
Bert