sdh2903
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| posted on 28/7/11 at 01:51 PM |
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R1 4xv starting issues.
Hi all
Having a few issues getting my 4xv running.
When the starter button is pressed in engine turns over and fires, it then tries to rev quite quickly. Ive checked all butterflies are closed.
As soon as the starter button is released it dies completely. I'm just going out now to start checking over start relay etc. The side
stand/neutral switch have been bypassed.
2nd issue, I'm a complete bec novice so may be a daft question, but the fuel pump is only receiving 12v when the start button is pressed. Should
it not receive a prime pulse when the ignition is switched on?
Any help gratefully received!!
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sdh2903
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| posted on 28/7/11 at 06:03 PM |
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Right the trying to rev problem is now sorted.
But still I can get the engine turning over and firing but as soon as I let go of the start button it dies. I did notice the battery was getting down
to 9.9v on my last start attempt so has been put on charge. Could the low battery stop it from idleing on its own?
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dmac
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| posted on 28/7/11 at 07:24 PM |
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It sounds like a fuel pump issue, the pump should be getting 12v as soon as you turn the ignition on, you will hear it clicking if its a bike pump. I
think your pump is only working when the starter is turning.
Duncan
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sdh2903
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| posted on 28/7/11 at 08:03 PM |
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Think I've sussed it, the fuel pump and ignition coils are only getting 12v feed when the engine is being cranked. Wiring fault on my part
Will rewire tomorrow and hopefully all will be well, fingers crossed.
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mad-butcher
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| posted on 29/7/11 at 09:04 AM |
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When you power up, the ecu will send a message to the fuel pump relay to tell it to prime for approx 10 secs and shut off, then when cranking ecu send
message to relay to switch pump on again, if the engine doesn't start and you stop cranking ecu tells relay to switch off, if engine starts ecu
tells relay to stay open, if you just want to start the engine for setting up you could always just wire the fuel pump up to a battery
tony
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