K11 Owners Group

blackcash

well i finally got the brick to start and idle for me . a small victory . after it had idled for a few i noticed smoke dripping down on to the exhaust . could this be old oil buning off or a valve issue..
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87 k75 31,000 "Blackcash"

Shoganai · Posted: Tue May 10, 2011 4:01 am Post subject:

I suspect old oil.

How long did you let it run?

Did the smoking stop?
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1993 K1100RS aka The Shop Whore
1994 K1100RS aka Blue Streak

The long road is a rainbow and the pot of gold lies there.
So slip the chain and I'm off again,
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Nana korobi ya oki

merlin geikie · Posted: Tue May 10, 2011 9:21 am Post subject:

Blackcash asks;

Scott_Anderson · Posted: Tue May 10, 2011 9:31 am Post subject:

Oil could be coming from varried areas.
seepage from the oil pump shaft seal could be migrating back, the valve cover gasket could be seeping a little bit, the oil pan seal could be leeking a little as well.
Like Merlin suggested a good degreasing of the area will help find the source of the leak.
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Ride safe.

1995 K1100LT 0302044
2017 FLHTK Ultra Limited
Garmin StreetPilot 2820
Garmin Zumo 550
Garmin Zumo XT
"One who does not ask questions is ashamed to learn" Danish proverb
1997 K1100LT 0302488(R.I.P.)
1997 R1100RT ZC62149(sold)

blackcash · Posted: Tue May 10, 2011 12:03 pm Post subject:

well i have had it running since then and no smoking except for the exhaust this is the first time the bike has been run in over a year . im also haveing trouble with idle control and putting any throttle to it it dies out unless its over 2000 on the tach . im gonna check the engine vent tube and the air breather seems to be clean now i guess i need to check to position of the throttle control.. more to come soon
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87 k75 31,000 "Blackcash"

blackcash · Posted: Tue May 10, 2011 3:24 pm Post subject:

just found a considerable amount of oil on the plugs when i pulled them out could this be due to the oil burning off or rings or a valve or valves that are sticking ? because oil was on all plugs and yes they are new pluge.
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87 k75 31,000 "Blackcash"

merlin geikie · Posted: Tue May 10, 2011 8:37 pm Post subject:

Blackcash writes;

blackcash · Posted: Wed May 11, 2011 12:33 am Post subject:

it sat in the side stand for about a year until i got it . now its sitting on the center stand. i plan on digging in to this further im gonna change the filter and flush out the old oil. would it be smart to pull the valve cover and check for deposits and oil crud build up ? also if a valve was stuck open or a ring going what indication would there be ? noise , the color of the smoke a particular smell ?

merlin geikie · Posted: Wed May 11, 2011 2:56 am Post subject:

Blackcash asks;

blackcash · Posted: Wed May 11, 2011 9:19 am Post subject:

as far as i know it did run ok. the guy had it pretty well serviced i have the invoices for what was done by the mechanic. i cant imagine theres to much wrong it only has 31000 on it but who knows more details to come. gotta figure out this rough idle and stalling . maybey its due air intake issue or something of the sort.

blackcash · Posted: Wed May 11, 2011 9:33 am Post subject:

oh also im noticing that the exhaust is heating up fairly fast is this normal with 75 models ?
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87 k75 31,000 "Blackcash"

merlin geikie · Posted: Wed May 11, 2011 8:56 pm Post subject:

The exhause will heat up very fast to way too hot to touch but that is good.

You may be able to see which cylinder is not well by checking which one does not heat up so fast.

31K miles is nothing on these bikes, not even properly run in so to speak.

If the PO had maintenance done and it was stored properly and not abused, you should be Ok.

How old is the gas?

Maybe dump the old fuel, clean up the plugs again, check that there is not too much oil and try and run her for twenty minutes and see what happens.

It could be an old gas problem in which case your pump will be struggling along with fuel filter, injectors and cylinders just not getting the usual fuel in the usual spray form.

Keep going with it
Wink

blackcash · Posted: Thu May 12, 2011 1:38 am Post subject:

the gas is new pump is new plugs have been cleaned since the last running. the bike sat unused for a year the guy was unable ti physically ride it. the timing is off so i need to get that taken care of and possibly replacing the ignition with better if thats possible . I am just learning about bikes as of buying this one i worked on drag cars over the years but i want a bike and i feel in love with this brick. so i feel cautious plus gotta plan it out financially. i have to read up on the throttle position to set that and i have a guy who is willing to walk me thru the process of adjusting the fuel / air mixture . im just trying to get to know my machine. im a cook/chef so. anyway as i always say . im gonna keep digging.
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87 k75 31,000 "Blackcash"

merlin geikie · Posted: Thu May 12, 2011 2:35 am Post subject:

Guess new ignition leads can't be a bad move.

Do you have a fat blue spark?

A night time check for spark leaks can be good as you see them then.

Clymer make a good manual for this bike and very well worth having and essential to the DIY wrencher, especially if you don't have loads of experience.

Clean all electrical connections, ESPECIALLY connections to the frame (ground).

Research all 'known issues' with this bike, there are a few.

This site is very good for K11 bikes and Yahoo groups have a good Kbmw forum.

Parts seem to be plentiful on ebay and some on this site too, see Flying Duck on this site.

Setting mixture is a bit of a no no unless you really really know what you are up to.

Unless mixture has been messed with it will be OK IMO.

The net has a fair bit of resource for the classic K bikes.

All the best with it... Wink

boxerNZ · Posted: Fri May 13, 2011 12:59 am Post subject: k75

I think u should pull the plugs out and replace them first with new ones, then check the air filter before looking into the engine .
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blackcash · Posted: Mon May 16, 2011 3:08 pm Post subject:

well I was able to work on the brick today . well i hae to read up on this throttle linkage it is revving up way to far . i suppose its either throttle adjustment or the air flow meter adjustment . and it seems the smoke that i have burning of is old oil cant seem to find the source of the oil though .

merlin geikie · Posted: Mon May 16, 2011 7:56 pm Post subject:

The high revs, presumably high idle could be air leaks from perished intake boots above your throttle bodies.

I would not be messing with the hard stuff first but the easy stuff first Laughing

If you spray degreaser of something onto those boots n the idle revs change you know you are onto something.

Check for air leaks in the intake.

Check for blockages in the air supply, filter etc.

Keeping reading up and don't change the settings on important components because it may not be them.

The bike was running fine until something happened in storage, most likely ageing of something.

Keep pluggin on buddy Wink

Scott_Anderson · Posted: Mon May 16, 2011 10:20 pm Post subject:

Had that experience just this last week. Working on Jims bike putting all the plastic back on and pulled off a vacuum line by accident. It wouldn't idle lower that 1500 till we put the line back on, then it came back down to 950.

Check the 4 little plug/caps on the vac nipples(one per cyl). I've had to replace mine couple of years ago as they were old and split open, thusly leaking.
_________________
Ride safe.

1995 K1100LT 0302044
2017 FLHTK Ultra Limited
Garmin StreetPilot 2820
Garmin Zumo 550
Garmin Zumo XT
"One who does not ask questions is ashamed to learn" Danish proverb
1997 K1100LT 0302488(R.I.P.)
1997 R1100RT ZC62149(sold)