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Soggz |
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Soggz Borekit Bruiser
Joined: 13 Oct 2018 Karma :
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Posted: 21:51 - 28 Dec 2018 Post subject: BMW K75C question |
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Hi, picked up a k bike a few months ago,now Xmas is over,I have made a start on it. Wired it up to a battery to check fuel pump. Knackered. Luckily,I have another which works,needs new rubber anti vibration thing around it turned to tar,need a new one,which I have ordered. Now.
Fuel rail,injectors,e.t.c...
Shall I just put the new pump and filter back in the tank with clean,fresh fuel and just see if it starts?,or should I go through with removing the fuel rail and injectors and cleaning them,or just see what happens?
I 'blew' the rail out in situ,by using an air line down the fuel pipe of the fuel rail,so that it came out of the other pipe.(the two pipes next to each other on the left hand side of the tank.). Fuel blew out of it,I then flush the rail again with clean fuel,then blew it through again. Dunno if it will help or not.
Any advice would be helpful.
Thanks. ____________________ Life is short,so live it... |
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jaffa90 |
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jaffa90 World Chat Champion
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Soggz |
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Soggz Borekit Bruiser
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TheSmiler |
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TheSmiler World Chat Champion
Joined: 14 Apr 2011 Karma :
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Posted: 07:52 - 30 Dec 2018 Post subject: Re: BMW K75C question |
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Soggz wrote: | Hi, picked up a k bike a few months ago,now Xmas is over,I have made a start on it. Wired it up to a battery to check fuel pump. Knackered. Luckily,I have another which works,needs new rubber anti vibration thing around it turned to tar,need a new one,which I have ordered. Now.
Fuel rail,injectors,e.t.c...
Shall I just put the new pump and filter back in the tank with clean,fresh fuel and just see if it starts?,or should I go through with removing the fuel rail and injectors and cleaning them,or just see what happens?
I 'blew' the rail out in situ,by using an air line down the fuel pipe of the fuel rail,so that it came out of the other pipe.(the two pipes next to each other on the left hand side of the tank.). Fuel blew out of it,I then flush the rail again with clean fuel,then blew it through again. Dunno if it will help or not.
Any advice would be helpful.
Thanks. |
Get the new tank sorted, attach it all together and press the starter button. If you hear a whirl from the tank you know the pump is working. To double check you can take the hose off the tank petcock (easier) and attach another to it and the end into a container. Press the starter button. You should get fuel coming through if the fuel pump is working.
Right then if that is working move further down check the spark plugs make sure they are sparking. You can put easy start or petrol down the spark plug hole and see if she starts up. However you have to remember that these earth through the starter motor plus 3 other points on the bike.
One is on the left hand side just below the Brain attached to the frame, the second is under the tank middle upper frame tube. Third is behind the air box. Depending if the fairing is on you have to remove the right hand side fairing for the one behind the air box. Then remove the two 6mm bolts that hold the air pipe on, detach the snap brackets on the air box and pull the air box top part off. You will see the earth attached onto the back of the fuel rail.
I mentioned the starter motor these earth through the starter motor so any electrical problems can be related normally back to here. You can simply remove the starter motor mark it up with a permanent marker then take it apart. You can actually reverse the polarity of these starter motors so they spin backwards.
With the starter motor cleaned up, fresh fuel, spark at the plugs and coils working. If you still have no go then I'd look at your electrics side of things. Could be loose connection on the brain one of the pins.
No point getting the fuel injectors cleaned at this point proffesionally anyway. ____________________ CB125>CG125>GN125>ER5>K100RS>R1100RS>K100RS
A2 completed 23/07/15 Ready for the Golden Crisp Packet |
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Soggz |
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Soggz Borekit Bruiser
Joined: 13 Oct 2018 Karma :
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Posted: 15:30 - 30 Dec 2018 Post subject: Re: BMW K75C question |
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TheSmiler wrote: | Soggz wrote: | Hi, picked up a k bike a few months ago,now Xmas is over,I have made a start on it. Wired it up to a battery to check fuel pump. Knackered. Luckily,I have another which works,needs new rubber anti vibration thing around it turned to tar,need a new one,which I have ordered. Now.
Fuel rail,injectors,e.t.c...
Shall I just put the new pump and filter back in the tank with clean,fresh fuel and just see if it starts?,or should I go through with removing the fuel rail and injectors and cleaning them,or just see what happens?
I 'blew' the rail out in situ,by using an air line down the fuel pipe of the fuel rail,so that it came out of the other pipe.(the two pipes next to each other on the left hand side of the tank.). Fuel blew out of it,I then flush the rail again with clean fuel,then blew it through again. Dunno if it will help or not.
Any advice would be helpful.
Thanks. |
Get the new tank sorted, attach it all together and press the starter button. If you hear a whirl from the tank you know the pump is working. To double check you can take the hose off the tank petcock (easier) and attach another to it and the end into a container. Press the starter button. You should get fuel coming through if the fuel pump is working.
Right then if that is working move further down check the spark plugs make sure they are sparking. You can put easy start or petrol down the spark plug hole and see if she starts up. However you have to remember that these earth through the starter motor plus 3 other points on the bike.
One is on the left hand side just below the Brain attached to the frame, the second is under the tank middle upper frame tube. Third is behind the air box. Depending if the fairing is on you have to remove the right hand side fairing for the one behind the air box. Then remove the two 6mm bolts that hold the air pipe on, detach the snap brackets on the air box and pull the air box top part off. You will see the earth attached onto the back of the fuel rail.
I mentioned the starter motor these earth through the starter motor so any electrical problems can be related normally back to here. You can simply remove the starter motor mark it up with a permanent marker then take it apart. You can actually reverse the polarity of these starter motors so they spin backwards.
With the starter motor cleaned up, fresh fuel, spark at the plugs and coils working. If you still have no go then I'd look at your electrics side of things. Could be loose connection on the brain one of the pins.
No point getting the fuel injectors cleaned at this point proffesionally anyway. | Ok,can't get the plugs out,need a different spanner. Motor turns when connected to battery,still waiting for tank parts,but will try all this when I have them. Thanks. ____________________ Life is short,so live it... |
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bikenut |
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bikenut World Chat Champion
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Soggz Borekit Bruiser
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Soggz Borekit Bruiser
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bikenut |
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bikenut World Chat Champion
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Soggz Borekit Bruiser
Joined: 13 Oct 2018 Karma :
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Posted: 12:53 - 04 Jan 2019 Post subject: Re: bm |
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bikenut wrote: | pictures wont open for some reason, but, be aware that the clutch may well be "stuck"......ie, will not "free" due to sticktion and really crash gears and bike shoot off with you being unable to stop it.
There is an easy way to free off a stuck clutch. Run engine till at normal temp, with bike on side stand. I good idea as this bike has been "resting " for some time. Give time for all engine components to get used to moving again ( valves ) .
When at running temp and bike on centre stand with no danger of it slipping/rolling off the centre stand, stop engine.
Select a high ish gear and start engine. The rear wheel must be able to be rotated freely, ie brakes not stuck and working, just in case.
Now pull in clutch and blip the throttle until the clutch frees.
This is much better than just grabbing a hand full of throttle and smashing it into gear, with the result of an un control able "bucking bronko" heading for the nearest plate glass window!!!
its kinder to the gear box as well. | Thanks. Clutch seems fine! Went up and down the gearbox, selects ok and goes in out of year no problem. I have another problem though, I think the thermostat may be useless, as the temp light came on and water came out of the expansion bottle. Can never kicked in, not sure why. Any ideas? ____________________ Life is short,so live it... |
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BTTD |
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BTTD World Chat Champion
Joined: 22 Nov 2012 Karma :
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Soggz |
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Soggz Borekit Bruiser
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bikenut |
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bikenut World Chat Champion
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Posted: 11:02 - 05 Jan 2019 Post subject: stick |
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Yes, even thermostats can stick sometimes.
When the engine starts from cold, the thermostat does not allow coolant flow thru the rad until a certain temperature has been reached, say 85 degrees c as an example ( the opening temp is usually marked on the thermostat ) .
This means the rad top does not get "hot" until the thermostat opens.
You will feel the temp and opening.
All this is to make for a quick engine warm up.
If the thermostat does not open, a "reverse" flow tends to happen sometimes.
Check temp with hand as engine temp rises.
If the rad cap is removed from cold you will see flow, increasing as revs rise somewhat, when the thermostat opens, due to coolant pump flow.
Remember the system will be "pressurised" when hot so do not remove the rad cap when engine hot.
If the system has an expansion tank ( to catch and hold expanded coolant due to heat, allows system to "refill" when cooling down, so system is always full. ) you will see the level rise when engine warms up, and falls when cooling down.
Also when engine at temp, feel rad core for "cold patches" meaning that area has blocked tubes.
The fan is for "extra cooling" when sitting in traffic.
Your system may ( may ) have a cooling system "heater" to reduce temp rise time, most modern cars have this. Look for "heater plugs" and wiring usually thru a relay for this, look at the wiring diagram for these parts also.
The temp sensor and temp gauge sender unit may be close to or in the thermostat housing.
post a wiring diagram ____________________ nuts about bikes |
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Snod Blatter |
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Snod Blatter Crazy Courier
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Soggz Borekit Bruiser
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Soggz Borekit Bruiser
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Soggz Borekit Bruiser
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Soggz Borekit Bruiser
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Old Thread Alert!
The last post was made 5 years, 96 days ago. Instead of replying here, would creating a new thread be more useful? |
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