Nilfisken Posted July 12, 2011 Share Posted July 12, 2011 Hi,made some impulse buying on the evil bay a few days ago and now I have a Huco (133010) fuel pump in front of me. I wonder how those that drive with electric pumps has sorted the issue of getting fuel cut out in case of engine failure or accidents. The most simple seems to be an inertia switch? Has anyone tried to get a system that cuts out if there are no more ignition pulses? Also wonder how people have solved the issue of getting fuel to the floats after a long standstill if using a system based on ignition pulses, do you just temporary unplug the switch or install a manual override?Cheers,Oskar Link to comment Share on other sites More sharing options...
John Bonnett Posted July 13, 2011 Share Posted July 13, 2011 3182 wrote:Hi,made some impulse buying on the evil bay a few days ago and now I have a Huco (133010) fuel pump in front of me. I wonder how those that drive with electric pumps has sorted the issue of getting fuel cut out in case of engine failure or accidents. The most simple seems to be an inertia switch? Has anyone tried to get a system that cuts out if there are no more ignition pulses? Also wonder how people have solved the issue of getting fuel to the floats after a long standstill if using a system based on ignition pulses, do you just temporary unplug the switch or install a manual override?Cheers,OskarHello Oskar,Facet recommend wiring the fuel pump, (relayed) via the oil pressure switch although I have never done this. An inertia switch is another option which I have used. Mine was taken from a scrap Escort. regardsJohn Link to comment Share on other sites More sharing options...
Nilfisken Posted July 13, 2011 Author Share Posted July 13, 2011 Thanks John,inertia switch seems the most straight forward and can be gotten for very little money. The main problem I see with wiring it through the oil pressure would be when the car has been staying for a very long time and there is not enough fuel in the floats to get it started (would need some sort of by-pass), but maybe thats just a good reason to start driving it even more often? ;)Cheers Link to comment Share on other sites More sharing options...
Nilfisken Posted July 13, 2011 Author Share Posted July 13, 2011 http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=170656902338&ssPageName=STRK:MEWAX:IT What about a switch of this type? Link to comment Share on other sites More sharing options...
piman Posted July 13, 2011 Share Posted July 13, 2011 Hello Nilfisken,that seems to be the thing, but I can't see the point of using an oil pressure switch or ignition pulses, I would just feed your pump through the switch. (That's what Triumph did with the P.I..)One point what pressure does your pump develop, (I'm assuming your car has carburettors?) as you may need a fuel pressure regulator also if it develops much more than 2 p.s.i..Alec Link to comment Share on other sites More sharing options...
mr.1200 Posted July 13, 2011 Share Posted July 13, 2011 Ford Escort XR3i's, Escort RS Turbo's, and Orion 1.6i's with the BOSCH K-Jetronic/ KE-Jetronic mechanical injection system used an ignition pulse sensing relay for their fuel pumps.They are quite pricey, this is the cheapest I could find on ebay,http://cgi.ebay.co.uk/escort-rs-turbo-s2-fuel-pump-relay-/270766698515?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item3f0af3f013The others are £40 odd buy it nows :'(The pump would automaticly turn off after a few seconds of running with no ignition pulse. So you can prime the system by flicking the ignition on and letting the pump run before it auto-offs. Then turning back off and on again etcc until the system is primed up. Once the engine is running/ cranked the pump will run by itself.I'd be happy to draw you the circuit/ pin-out if you, or anyone else requires :) Link to comment Share on other sites More sharing options...
JohnD Posted July 13, 2011 Share Posted July 13, 2011 There's a much more common inertia switch that's fitted on Rovers, Peugot, Jaguars, Astons and many other marques.Looks like this on SofS - you have to get one from a Renault to have the rrrrred rubbeare cap(e) as then eet 'as ze Va Va Voom!Some have three wires, so that when it does cut out, it lights a warning to tell you so.Some just have two and are a 'dumb' cut-out.Less than £10 if 2nd hand - and what's to go wrong?John Link to comment Share on other sites More sharing options...
James Posted July 13, 2011 Share Posted July 13, 2011 What can go wrong?Make sure it's fitted in the right orientation.Are you sure that's right John? I thought it was mean to be different. Link to comment Share on other sites More sharing options...
JohnD Posted July 13, 2011 Share Posted July 13, 2011 Eh?What's to go wrong with 2nd hand?JOhn Link to comment Share on other sites More sharing options...
Nilfisken Posted July 13, 2011 Author Share Posted July 13, 2011 Hi Guys,thanks for all the info. The pump develops about 2 psi (0.15 bar) so hopefully there shouldn't be a need for a regulator? Probably wont install it until the autumn (or the next time the mechanical fails me) but gathering info and parts to have everything ready :) I am kind of tempted for a safety switch driven by the ignition pulses (especially if it gives a few seconds before cutting out) since it feels like the best cue to really shut of the fuel supply by. Searching around on the net it seems to be quite a few people that report inertia switches being released too easy, but maybe its a case that no one reports in the ones that works like they should?Cheers Link to comment Share on other sites More sharing options...
jonnyk5614 Posted July 14, 2011 Share Posted July 14, 2011 Errrrrrrrrrrr, for the last 2 years - my "emergency roadside repair" electric pump has come on with the ignition. Am I tempting fait! Link to comment Share on other sites More sharing options...
piman Posted July 14, 2011 Share Posted July 14, 2011 Hello Nilfisken, you are getting far too complicated, why use ignition pulses on a carburettor car, it's uneccessary and just added complication?By the way I've never had a problem with my Triumph inertia switch at all.Alec Link to comment Share on other sites More sharing options...
Nilfisken Posted July 14, 2011 Author Share Posted July 14, 2011 I guess your right piman, it's just that sometimes when planning projects it is fun to push it further 'just because you can', but on the other hand keeping the electrical system simple is never a bad idea whenever it is time to hunt down gremlins =) Link to comment Share on other sites More sharing options...
Nick Jones Posted July 14, 2011 Share Posted July 14, 2011 I'd use an inertia switch - just 'cause the car has had an accident doesn't mean the engine isn't still running!Nick Link to comment Share on other sites More sharing options...
Nilfisken Posted July 14, 2011 Author Share Posted July 14, 2011 Switch bought and on it's way :) Hopefully an installation thread is coming later on... Thanks for all the feedback! Link to comment Share on other sites More sharing options...
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