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motor just stopped

motor just stopped

beaglebasher
3 years ago

I was out for a run today and as I was going up a steep hill the motor just stopped. No warning at all, just stopped.
It was in a prick of a spot too, on the outside of a tight bend. There wasnt enough room to get the bike completely off the road so I left it in first gear and got off and had a quick look for anything obvious. Nothing obvious. I tried to start it again and it turned over fine but didnt even try to start.
I noticed grey / blue smoke had came out the exhaust. I took a plug lead off intending to check for a spark but even that was impossible in the position the bike was in so I put the lead back on.
I was standing there wondering what to do when 3 young fellas on jap bikes turned up. They managed to park their bikes up the hill a bit and came back to help. I tried to start it again and the same thing.
I got them to push me so I could do a u turn and rolled back down the hill until I found a half decent place to pull over..
I had another look around and still couldnt see anything wrong so I tried to start it again. It cranked over for three or four seconds then coughed and farted and started. I gave it a rev or two and it seemed fine so I jumped on and headed home, a 1 hour trip. Didnt miss a beat.
When I got home I switched it off and it started like normal.
Any ideas what might have happenned? 2002 fatboy, fuel injected.

steelo
3 years ago

Could you have been low on fuel bb? Fuel line went dry on the steep hill? Recovered when you turned around.

binnsy
3 years ago

Quoting steelo on 04 Apr 2021 08:09 AM
Could you have been low on fuel bb? Fuel line went dry on the steep hill? Recovered when you turned around.

Wouldnt imagine they would be gravity fed Steelo. Surely a fuel pump in there somewhere.

beaglebasher
3 years ago

Had a think about that steelo but nah. 3/4 full and I had to go up a hill just as steep on the way home.
When it stopped there was no warning whatsoever, if it was fuel I would expect coughing and farting beforehand, not just a sudden stop.
Also the blue /grey smoke would suggest fuel wasnt the problem.
I am pretty sure the bike has a computer but I dont know how to read the codes

steelo
3 years ago

No worries BB. (Thanks for kind words of support Binnsy :-)) I know it has a pump.
I have read that the siphon hose from the fuel pump can get holes / cracks in it and let air in.
Did you put new fuel in that morning. You may have water in the tank. That could have been picked up. Glad to hear it's running OK now though.
Not a huge drama to drain the tank (I think) After a day or so, the water will go to the bottom

beaglebasher
3 years ago

Just you tubed the code thing . Still none the wiser. Cant be fucked.
Any computer gurus are welcome to chip in. I scrolled through ; do1CLr to do9CLr and at the end 51502 came up.
One of the you tubers said the system changed in 2004. Another headfuck !

Grease Monkey
3 years ago

Beages those particular codes won't tell you nothing on that bike, needs to be hooked up to the dealer diagnostic stuff to get the codes that matter, hate saying that but yeah, get them to have a look, it'll most likely be an intermittent wiring fault, bastard of a thing to track down.

beaglebasher
3 years ago

Thats what I thought GM. Its a 20 year old computer. The bike has got roughly 60k on it steelo. And thanks for fuck all FC.
I had an intermittent problem when the right blinker didnt work for a couple of weeks but that came good on its own so I might have another look in the morning and spray every electrical connection I see with WD40.

paulybronco
3 years ago

Quoting Grease Monkey on 04 Apr 2021 10:03 AM
Beages those particular codes won't tell you nothing on that bike, needs to be hooked up to the dealer diagnostic stuff to get the codes that matter, hate saying that but yeah, get them to have a look, it'll most likely be an intermittent wiring fault, bastard of a thing to track down.

With you Hilly...earth lead or something along those lines

UltraPete
3 years ago

Are you getting a check engine light flash?
If not the codes won't give you anything helpful anyway.
You can bridge the pins on the diagnostic plug and count the flashes, there are lists of the codes online.

Mine is an 02 and this method works for me

https://hdbitchin.com/index.php?topic=1426.0

Grease Monkey
3 years ago

That's awesome Pete, good luck beages lol

beaglebasher
3 years ago

Nothing unusual flashing . The bike is a 2002 model . Must have been one of the first fuel injected ones in Australia.
I will do the wd40 thing tomorrow

Retroman
3 years ago

I have seen the tank mounted ignition switch give these types of gremlins in the past.

carefully take it off the bike , turn the console upside down and remove the switch completely.

Lube and clean the male and female connectors , even soaking the whole switch upside down in WD40 or CRC

The ECM (computer) itself is really quite robust , so look for simple/age related corrosion first.

Happened to my 2000 Deuce and my EFI 2006 Dyna Anniversary. Constant Perth WA seabreeze the ultimate cause methinks.

Clean all the other multiplugs in the fusebox area and wiring harness as well while at it , I finish with aerosol electrical clean and lube.

Wideglider
3 years ago

Sure RM, the tank mounted ignition/accessories switch does give probs on occasion - I have had to clean-up the contacts on mine to resolve a separate issue, although unlikely the problem in BB's case though. He states the his starter turns over fine, but engine will not fire up.
Taking another item out of the equation in the process of elimination.

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