redsunbeam
Part of things
I can't hear you .............
Posts: 136
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Jun 19, 2012 20:26:50 GMT
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I cant get this damn Lexus V8 in the rover to run. At the first attempt it fires but only runs for 3 or 4 seconds. After that it just turns over with no attempt to fire. Leave it for five minutes and come back again and it fires briefly again and so on. I'm aware the odds are that i have a wiring issue, have already had one u/s ECU, but this sounds like the engine flooding to me. Thoughts?  |
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Jun 19, 2012 20:35:22 GMT
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Could the ecu be cutting power to the fuel pump? Like it's not getting a signal from somwhere?
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1988 Mercedes w124 superturbo diesel 508hp
1996 Mercedes s124 e300 diesel wagon
1990 BMW E30 V8 M60 powered!
1999 BMW E46 323ci project car
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redsunbeam
Part of things
I can't hear you .............
Posts: 136
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Jun 19, 2012 20:54:53 GMT
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Could the ecu be cutting power to the fuel pump? Like it's not getting a signal from somwhere? The fuel pump is powered straight from the ignition switch at the moment, i have a fuel pump ecu to fit later. I wanted to keep things simple to start. I have had an inductive strobe on the plug leads and have spark. |
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Dez
Club Retro Rides Member
And I won't sit down. And I won't shut up. And most of all I will not grow up.
Posts: 11,790
Club RR Member Number: 34
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It wont start.Dez
@dez
Club Retro Rides Member 34
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Jun 19, 2012 21:18:21 GMT
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funnily enough we just had exactly the same symptoms today, on a 1.3 k11 motored k10 micra I wired. turned out to be the fuel lines were on the wrong way round on the fuel rail. turns out the pressure reg on the rail goes after the injectors not before, as youd assume when presented with send/return fuel lines and the rail with two barbs on it.
not saying that is your issue, but it had me doubting my (very methodical) wiring too, but to my carb-trained eyes it had all the symptoms of engine flooding too, and did indeed turn out to be fuel supply rather than wiring.
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Last Edit: Jun 19, 2012 21:20:40 GMT by Dez
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redsunbeam
Part of things
I can't hear you .............
Posts: 136
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Jun 19, 2012 21:41:46 GMT
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I did have the fuel lines on wrong way round to start with, the bleed off the regulator is the return. It has a buffer on the rail inlet that looks like a regulator so I piped that to the return. D'OH.
I had also bought a high pressure pump by mistake so it didnt lock out untill 11 bar. Could that have damaged the buffer and regulator and be giving me issues?
When the fuel pump is running, the fuel rail sounds like a toilet systern filling. Cant be right, my V8 sounds like a toilet!
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Last Edit: Jun 19, 2012 21:43:50 GMT by redsunbeam
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Jun 20, 2012 12:31:24 GMT
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sounds like you may have popped the fuel pressure regulator so your not getting contained pressure in the rail for the injectors to feed from...the fuel will be running straight through and back to the tank.
are the plugs getting wet when you crank it over?
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if at first you don't succeed...use a gas axe!
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