ch1ll1
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| posted on 27/3/08 at 08:31 PM |
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ok been out tonight in the garage
wired the start switch on a rocker switch
we all know it fires up,
well left the starter turning over( i know i should not)
and it runs and revs up don't cut out until i switch the starter switch of !
so the engine i know now runs, but i cannot leave it like that as the starter will burn out !
any ideas?
paul
[Edited on 27/3/08 by ch1ll1]
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adithorp
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| posted on 27/3/08 at 10:17 PM |
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If it was fuel pump related it'd take time to run out in the carb bowls (few second then cough, splutter, and die). If it was HT ignition system
it wouldn't fire. Sounds like it has ignition during cranking but looses it when the starter is released?
Couple of possibilities...
Did the alarm include an immobiliser? If so it could be that. Not sure on the carb R1 but many car immobilisers don't kill ignition when
cranking.
Which way up is your tilt switch. Can't remember if it'd let the engine turn over and cause your symptoms but...UP should be on top and
not writen the right way up on the side.
Have you checked the ignition relays and fuses. Are any by-passed when cranking.
Sorry if I'm way out on any of this but I'm more familiar with the injection R1.
adrian
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ch1ll1
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| posted on 28/3/08 at 07:55 AM |
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its an electrical problem,
but finding it is a mare,
so new loom i think
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TimC
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| posted on 28/3/08 at 04:11 PM |
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If you are going to do that, give serious thought to chopping half of it out and wiring it the same as a car. Means you can start in gear etc etc.
If I look at my notes in the manual I can tell you what to chop out.
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adithorp
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| posted on 28/3/08 at 09:54 PM |
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Double check your tilt switch. They definatly turn over and fire but die when the starter is released when this is the wrong way up. Saw one at a kit
manufacturers that they'd been playing with for a week and it was the tilt switch!
Spotting that got me a hefty discount on the parts I'd gone for!
adrian
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Coose
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| posted on 29/3/08 at 12:20 AM |
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quote:
Originally posted by TimC
If you are going to do that, give serious thought to chopping half of it out and wiring it the same as a car. Means you can start in gear etc etc.
If I look at my notes in the manual I can tell you what to chop out.
Rubbish. If you link out the right bits you can start it in gear. Plus, you have the delights of the lovely little relays etc., with the beauty of
minimal butchering, hence fewer potential faults... 
Your problem is probably something connected incorrectly in the starter/ignition circuit. I have a wiring diagram somewhere which I'll have a
look at once I get the chance.
Spin 'er off Well...
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Coose
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| posted on 29/3/08 at 12:21 AM |
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quote:
Originally posted by adithorp
Double check your tilt switch. They definatly turn over and fire but die when the starter is released when this is the wrong way up. Saw one at a kit
manufacturers that they'd been playing with for a week and it was the tilt switch!
Spotting that got me a hefty discount on the parts I'd gone for!
adrian
It's a '99 so no tilt switch.
Spin 'er off Well...
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TimC
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| posted on 29/3/08 at 07:11 AM |
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quote:
Originally posted by Coose
quote:
Originally posted by TimC
If you are going to do that, give serious thought to chopping half of it out and wiring it the same as a car. Means you can start in gear etc etc.
If I look at my notes in the manual I can tell you what to chop out.
Rubbish. If you link out the right bits you can start it in gear. Plus, you have the delights of the lovely little relays etc., with the beauty of
minimal butchering, hence fewer potential faults...
I appreciate that you don't need to go the whole hog to start in gear but I certainly wouldn't bother buying a whole second Yamaha loom.
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ch1ll1
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| posted on 29/3/08 at 09:14 AM |
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too late just have done 
any thoughts on starter relay.
could that be the prob (woulndt think so just thinking out loud )
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MR2
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| posted on 29/3/08 at 10:17 AM |
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spark = spark. it wont cut out if you stop cranking. Can you push start the car? And look if it fires,This eliminate the starter relay. Also heat the
radiator with an electric heater to warm up the engine. Wire the fuelpump separate to make sure it gets fuel. Are the sparkplugs wet? And spraying
some sort of starting fluid works. It eliminates fueling and proves its an electric problem.
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TimC
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| posted on 29/3/08 at 10:20 AM |
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If you want any relay boxes etc etc I have a hacked apart loom and you're welcome to any bits off it.
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Coose
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| posted on 29/3/08 at 11:44 AM |
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quote:
Originally posted by ch1ll1
any thoughts on starter relay.
could that be the prob (woulndt think so just thinking out loud )
I would suspect you've wired something wrong with regard to feeds and grounds. I assume all of the dash lights come on before you press the
start button, and the fuel pump primes also?
Spin 'er off Well...
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Koss
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| posted on 6/4/08 at 03:20 PM |
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Did you eventually get it running? (sorry just joined forum).
I had the exact same problem with my R1 engine. It would run for a second after cranking then stop when the start button was released. I looked at the
starter relay wiring and discovered that one of the small wires from the relay was only live when the button was pressed. This wire has nothing to do
with triggering the relay. I ran a live from the battery to it and she ran. Not sure if it ran to the ecu, few years back now.
I re-wired the relay in the end so it worked on its own isolated circuit.
Hope that helps
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