Guest mossop1 Posted August 24, 2009 Share Posted August 24, 2009 Hi any one have any idea as to weather a mk3 primes before start as im sure it should car starts and runs fine just the issue with the priming any help greatfully recieved. Quote Link to comment Share on other sites More sharing options...
Guest markeyboy Posted August 24, 2009 Share Posted August 24, 2009 i think it depends if it has a electric or mechanical pump, electric will mechanical wont if its running fine dont worry about it lol Quote Link to comment Share on other sites More sharing options...
Guest mossop1 Posted August 24, 2009 Share Posted August 24, 2009 true i would but ive spent so much time on the old thing im just well if it dose then it will lol maybe i should just acept that all is good lol.cheers Quote Link to comment Share on other sites More sharing options...
Guest mossop1 Posted August 24, 2009 Share Posted August 24, 2009 oh forgot to add its mfi version so yes elecy Quote Link to comment Share on other sites More sharing options...
chaz Posted August 24, 2009 Share Posted August 24, 2009 Electric fuel pumps prime when you turn the ignition on. Quote Link to comment Share on other sites More sharing options...
Guest mossop1 Posted August 24, 2009 Share Posted August 24, 2009 cheers i thought so.ok ideas as to what would stop it doing so as i have changed the relay as with most used to be prob but to no avail lol i know somthing must make the relay switch ie poss ecu but dout ford got that advanced on a b plate. Quote Link to comment Share on other sites More sharing options...
iansoutham Posted October 3, 2009 Share Posted October 3, 2009 The fuel pump will not always prime. If you want to make sure, go to the fuel pump relay and bridge the big black/red wire and the black wire. The fuel pump should prime until you either turn the ignition off or remove the "bridge". If it does not, then you either have no power to the relay or there is a bad connection/knackered pump issue. Quote Link to comment Share on other sites More sharing options...
Guest mossop1 Posted October 3, 2009 Share Posted October 3, 2009 cheers for that i know i have feed to the relay as checked so was thinking fuel pump as was siezed but good swift bash with hammer got it working for mot lol cheers again next stop ebay for new pump. Quote Link to comment Share on other sites More sharing options...
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