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 Post subject: Unstarted paso 750 Help
PostPosted: Fri Dec 07, 2012 6:27 am 
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Joined: Fri Dec 07, 2012 6:10 am
Posts: 3
Location: Australia
model: 750 Paso
year: 1988
Hi Guys.Iam New to this site so i hope someone can help me.I have just aquired my freinds 88 paso 750 and am trying to reserect it.
i have done the fuel lines ,flushed the tank ,new battery new starter solonoid,but no go just a single click.Any comments would be good. thanks


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 Post subject: Re: Unstarted paso 750 Help
PostPosted: Fri Dec 07, 2012 2:55 pm 
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paso grand pooh-bah
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Joined: Sun Jul 18, 2004 12:00 am
Posts: 5333
Location: southern Germany
model: 750 Paso
year: 1987
I made this some time ago maybe it helps.
https://www.box.com/s/t17x7fsfe60c7hz5hhtn

G.


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 Post subject: Re: Unstarted paso 750 Help
PostPosted: Fri Dec 07, 2012 7:52 pm 
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Joined: Tue Feb 14, 2006 12:00 am
Posts: 244
Location: Homer, NY
Did the bike run when he stored it?

Try this: Put the bike on its center stand. Take the spark plugs out. Place the bike in gear. Turn the tire, this should cause the engine to turn over. It isn't easy to do, but it should turn with the force of one hand.

If the engine turns over, you've got a problem with your solenoid or starter. (the "click" indicates your button and wiring to the solenoid are ok). Try shorting a screwdriver across your solenoid large terminals. Be careful, there will be sparks, and whatever you use to short the terminals will get hot. Wear gloves. If shorting the solenoid causes the engine to turn over, you've got a bad solenoid. If not, the starter is suspect.

If the engine doesn't turn over, you've got a mechanical issue. Possible causes: rings stuck in cylinder bores, engine crankcase full of fuel from leaky carbs (hydrolocked), or mechanical failure.

_________________
The $900 Paso: DellOrto's, Dyna 5 ohm coils, Ignitech TCIP4; finally, a new set of tires! Goldentyre GT070/071

The bike is gone, but the nightmares continue...


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 Post subject: Re: Unstarted paso 750 Help
PostPosted: Fri Dec 07, 2012 9:26 pm 
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paso grand pooh-bah
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Joined: Wed Apr 09, 2008 9:57 pm
Posts: 1074
Location: Manchester, England.
model: 907 I.E.
year: 1992
Be Careful ....How old are those belts?

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BMW K100RS PATINA CAFE RACER


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 Post subject: Re: Unstarted paso 750 Help
PostPosted: Fri Dec 07, 2012 9:51 pm 
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paso grand pooh-bah
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Joined: Sat Sep 03, 2005 12:00 am
Posts: 1322
Location: SF Bay Area
model: 750 Sport
year: 1990
You have done nothing wrong yet.

Yeah, check to see that the motor turns over first. Even a good starter won't turn over a stuck motor.

Pull the plugs, squirt in a bit of oil, and turn the motor over to coat the cylinder walls. This will help boost compression until it starts. A dry cylinder doesn't have a lot of compression.

Put in some fresh plugs. Champions are pretty good and low cost.

If it hasn't moved in a while, you should confirm that the clutch will disengage. A dry clutch can take in moisture and rust the whole thing together. Put it in gear, pull in the clutch, and push the bike to break the pack loose. In the worst case, you have to just pull off the cover, and loosen the 6 screws, loosen up the pack and re-assemble.

Cheers, Phil

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Duc in the Bay
1990 750 Sport x2-Rosso Blanko (900ss copy) & Nuovo Nudo (Scrambler project)
1991 907 -mostly stock
2002 ST4s - Lots of mods.


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 Post subject: Re: Unstarted paso 750 Help
PostPosted: Sat Dec 08, 2012 1:13 am 
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Joined: Sun Jul 18, 2010 1:56 am
Posts: 64
Location: East Bay, SF Bay Area
model: 750 Paso
year: 1987
paso750 wrote:
I made this some time ago maybe it helps.
https://www.box.com/s/t17x7fsfe60c7hz5hhtn

G.


Heilige Scheiße! I think I had a little stroke when I opened that up! :wacko:

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Wish I'd bought the 990 years ago


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 Post subject: Re: Unstarted paso 750 Help
PostPosted: Sat Dec 08, 2012 1:32 pm 
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paso grand pooh-bah
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Joined: Tue Jul 20, 2010 9:27 am
Posts: 604
Location: Melbourne Australia
model: 907 I.E.
year: 1992
scimmione wrote:
paso750 wrote:
I made this some time ago maybe it helps.
https://www.box.com/s/t17x7fsfe60c7hz5hhtn

G.


Heilige Scheiße! I think I had a little stroke when I opened that up! :wacko:


I think this is a good diagram that everybody can understand...and would have taken a while to put down on paper :thumbup:

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Cheers Claude.

...long live the square framed duc!

'92 907...numero 2046
'92 851...in progress


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 Post subject: Re: Unstarted paso 750 Help
PostPosted: Sun Dec 09, 2012 3:21 am 
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Joined: Fri Dec 07, 2012 6:10 am
Posts: 3
Location: Australia
model: 750 Paso
year: 1988
Thanks to everyone for your responses and help.
See how we go
Thanks
Andrew :D :thumbup:


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 Post subject: Re: Unstarted paso 750 Help
PostPosted: Sun Dec 09, 2012 11:20 am 
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paso grand pooh-bah
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Joined: Sun Jul 18, 2004 12:00 am
Posts: 5333
Location: southern Germany
model: 750 Paso
year: 1987
Keep us posted.
I`ve never got a feedback to the file I created about 2 years ago. I was tired at that time that the same questions were constantly repeating :-P If it ever helped anyone I don`t know.

G.


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 Post subject: Re: Unstarted paso 750 Help
PostPosted: Tue Dec 11, 2012 8:28 pm 
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Joined: Wed Aug 01, 2007 12:00 am
Posts: 40
Location: Bristol, Connecticut USA
model: 750 Paso
year: 1987
Check the side stand for a bad safety switch.


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 Post subject: Re: Unstarted paso 750 Help
PostPosted: Wed Dec 12, 2012 9:14 am 
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paso grand pooh-bah
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Joined: Sun Jul 18, 2004 12:00 am
Posts: 5333
Location: southern Germany
model: 750 Paso
year: 1987
Good point but according to the wiring plan the side stand switch on the Paso only opens/closes a ground connection for the warning light.

G.


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 Post subject: Re: Unstarted paso 750 Help
PostPosted: Thu Dec 13, 2012 6:19 am 
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Joined: Fri Dec 07, 2012 6:10 am
Posts: 3
Location: Australia
model: 750 Paso
year: 1988
Thanks For Alot of tips.
Have taken the plugs out and can turn the rear wheel in gear reasonably but its not so easy as one of suggested.So i am guessing now its starter motor,but am open to more ideas.
Thanks Andrew :thumbup: :cool:


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 Post subject: Re: Unstarted paso 750 Help
PostPosted: Thu Dec 13, 2012 6:50 am 
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paso grand pooh-bah
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Joined: Sat Sep 03, 2005 12:00 am
Posts: 1322
Location: SF Bay Area
model: 750 Sport
year: 1990
Put a few squirts of oil in each cylinder and leave the plugs out while you get the starter to turn over. Spinning the motor at a reasonable speed will help get oil up into the heads where it hasn't been for a few years. Once you get it all spinning freely, then put the plugs back in.

Are you getting voltage to the starter when you push the button?

Cheers, Phil

_________________
Duc in the Bay
1990 750 Sport x2-Rosso Blanko (900ss copy) & Nuovo Nudo (Scrambler project)
1991 907 -mostly stock
2002 ST4s - Lots of mods.


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 Post subject: Re: Unstarted paso 750 Help
PostPosted: Thu Dec 13, 2012 1:42 pm 
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Joined: Tue Feb 14, 2006 12:00 am
Posts: 244
Location: Homer, NY
amac wrote:
Thanks For Alot of tips.
Have taken the plugs out and can turn the rear wheel in gear reasonably but its not so easy as one of suggested.So i am guessing now its starter motor,but am open to more ideas.
Thanks Andrew :thumbup: :cool:


You're certain you've got a good battery, with good clean, tight connections?

Did you try shorting the large lugs on the solenoid with a screwdriver? I know you say you installed a new solenoid, but I've had new ones that were dead.

Another test: Try using jumper cables from a non running car. Try using them like normal, with one to the battery + and one to a good frame/engine ground.

If that doesn't work, take the + terminal direct to the starter. Occasionally the wiring itself is bad.

Be very careful mucking around with jumper cables. It's easy to hook them up wrong, and the damage that can be caused is bad.

_________________
The $900 Paso: DellOrto's, Dyna 5 ohm coils, Ignitech TCIP4; finally, a new set of tires! Goldentyre GT070/071

The bike is gone, but the nightmares continue...


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 Post subject: Re: Unstarted paso 750 Help
PostPosted: Thu Dec 13, 2012 4:52 pm 
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Joined: Sun Jul 18, 2010 1:56 am
Posts: 64
Location: East Bay, SF Bay Area
model: 750 Paso
year: 1987
Are you getting a spark at all? After letting my Paso sit for 3yrs, the inductive pick-ups went bad. It did everything it should when I pressed the starter but start. It did pop occasionally when trying to start: The coils tested good but no consistent spark.

Hope that helps. :)

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Wish I'd bought the 990 years ago


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