White smoke coming from exhaust on old barn-find


Information and questions on GL1100 Goldwings (1980-1983)
Post Reply
puttersup
Posts: 10
Joined: Wed Aug 03, 2016 6:41 pm
Location: prince rupert bc canada
Motorcycle: 1983 GL1100 Interstate

White smoke coming from exhaust on old barn-find

Post by puttersup »



I am currently in the process of getting an 81 Interstate up and running after sitting in a barn for a number of years.

After rebuilding the carbs, changing the fuel pump, adding some new fuel, changing the plugs and oil and oil filter and ensuring there was antifreeze, at 2 AM this morning I fired it up for the first time in what I am sure is a very long time.

However, while it sounds fantastic, I have to have it fully choked to keep it running, and it is blowing lots of white/grey smoke. I have let it run long enough to fill the neighborhood with smoke (5 mins or so) twice, hoping that any bad gas in the system might burn off, but no luck.

What is going on, and what do I need to do next?


cyberlon
Posts: 97
Joined: Mon Apr 03, 2017 6:03 pm
Location: Colorado
Motorcycle: 1982 GL1100I

Re: White smoke coming from exhaust on old barn-find

Post by cyberlon »

Take a quick look at your oil again, just to be sure there isn't any coolant leaking into it. (Take this with a grain of salt, I do not claim to be an expert.) Coolant, afaik, will cause white smoke. Grey smoke can be caused by oil getting into the combustion chamber.
User avatar
Aussie81Interstate
Posts: 1178
Joined: Thu Nov 27, 2014 2:34 am
Location: Penrith Australia
Motorcycle: 2001 GL1500F6C Valkyrie
1982 CX500 Turbo (Historic registration - finally)
1981 GL1100 Interstate (sold)
1988 GL1500 (sold)

Re: White smoke coming from exhaust on old barn-find

Post by Aussie81Interstate »

Bad valve stem seals won't help - and depending on how much oil could be sitting in the exhausts getting burnt off.

You will need to clean your carbs, and can you do a compression check on each cylinder - a dry and then a wet test.

cheers
User avatar
Johnyy Smoke
Posts: 722
Joined: Sat Nov 26, 2011 6:44 am
Location: Se Minnesota
Motorcycle: 1980 GL1100
Vetter. "Its like Deja Vu all over again".

Re: White smoke coming from exhaust on old barn-find

Post by Johnyy Smoke »

cyberlon wrote:Take a quick look at your oil again, just to be sure there isn't any coolant leaking into it. (Take this with a grain of salt, I do not claim to be an expert.) Coolant, afaik, will cause white smoke. Grey smoke can be caused by oil getting into the combustion chamber.
It could be a head gasket, or just crap that accumulated over the years getting burned out. Run it a little longer and see what happens. Float settings come to mind, are you sure they are "spot on"? Do check oil and antifreeze for contamination.
What is a "afaik" ? And do all 1100"s have one? :) Regards, Johnny
User avatar
Overdog
Posts: 317
Joined: Sat Oct 12, 2013 7:00 am
Location: Pittsburgh, Pennsylvania
Motorcycle: 83 Goldwing Interstate

Re: White smoke coming from exhaust on old barn-find

Post by Overdog »

Acronym for "As far as I know"
User avatar
Overdog
Posts: 317
Joined: Sat Oct 12, 2013 7:00 am
Location: Pittsburgh, Pennsylvania
Motorcycle: 83 Goldwing Interstate

Re: White smoke coming from exhaust on old barn-find

Post by Overdog »

...and I almost hate to say it but....the O.P. is in Canada. I think it gets cold in Canada. If the bike didn't have good antifreeze in it there could be cracks in the block or head.....
User avatar
Johnyy Smoke
Posts: 722
Joined: Sat Nov 26, 2011 6:44 am
Location: Se Minnesota
Motorcycle: 1980 GL1100
Vetter. "Its like Deja Vu all over again".

Re: White smoke coming from exhaust on old barn-find

Post by Johnyy Smoke »

Overdog wrote:Acronym for "As far as I know"
Ahhhh- thanks for enlightening me! Cleary, I am not the brightest color in the box. :) Regards, Johnny
User avatar
Rednaxs60
Posts: 2540
Joined: Wed Nov 18, 2015 12:44 pm
Location: Victoria, British Columbia, Canada
Motorcycle: 1985 GL1200 LTD
1995 GL1500 SE CDN Edition (sold)
2012 Suzuki DL1000 VStrom
2008 GL1800 (sold)
Ontario 1985 GL1200 LTD (sold)

Re: White smoke coming from exhaust on old barn-find

Post by Rednaxs60 »

If the bike needs the choke to operate, you have air leaks somewhere. As has been mentioned, white smoke is generally attributed to water in the cylinder, black smoke to oil or way too much fuel. It has been sitting for several years and just having it start and run is a good sign: however, check everything out. Do you have the 1100 service manual? PM me with your email if you would like an electronic copy.

Cheers
"When you write the story of your life, don't let anyone else hold the pen"

Ernest
puttersup
Posts: 10
Joined: Wed Aug 03, 2016 6:41 pm
Location: prince rupert bc canada
Motorcycle: 1983 GL1100 Interstate

Re: White smoke coming from exhaust on old barn-find

Post by puttersup »

As mentioned, I have cleaned and rebuilt the carbs.

I will make the compression test my next step.

How hard is it to change the stem seals?
Aussie81Interstate wrote:Bad valve stem seals won't help - and depending on how much oil could be sitting in the exhausts getting burnt off.

You will need to clean your carbs, and can you do a compression check on each cylinder - a dry and then a wet test.

cheers
puttersup
Posts: 10
Joined: Wed Aug 03, 2016 6:41 pm
Location: prince rupert bc canada
Motorcycle: 1983 GL1100 Interstate

Re: White smoke coming from exhaust on old barn-find

Post by puttersup »

Rednaxs60 wrote:If the bike needs the choke to operate, you have air leaks somewhere. As has been mentioned, white smoke is generally attributed to water in the cylinder, black smoke to oil or way too much fuel. It has been sitting for several years and just having it start and run is a good sign: however, check everything out. Do you have the 1100 service manual? PM me with your email if you would like an electronic copy.

Cheers
There is plenty of antifreeze in the rad, and it doesn't have that sweet smell in the exhaust. Maybe the exhaust is better described as light gray as opposed to white. I do have a manual. I will go back and check clamps and connections to see if air leak is the issue.

Here is a thought....i started it without the air filter housing on it. Could that lead to it drawing to much air?
puttersup
Posts: 10
Joined: Wed Aug 03, 2016 6:41 pm
Location: prince rupert bc canada
Motorcycle: 1983 GL1100 Interstate

Re: White smoke coming from exhaust on old barn-find

Post by puttersup »

Johnyy Smoke wrote:
cyberlon wrote:Take a quick look at your oil again, just to be sure there isn't any coolant leaking into it. (Take this with a grain of salt, I do not claim to be an expert.) Coolant, afaik, will cause white smoke. Grey smoke can be caused by oil getting into the combustion chamber.
It could be a head gasket, or just crap that accumulated over the years getting burned out. Run it a little longer and see what happens. Float settings come to mind, are you sure they are "spot on"? Do check oil and antifreeze for contamination.
What is a "afaik" ? And do all 1100"s have one? :) Regards, Johnny
In my limited experience, I feel like I can rule out the head gasket and coolant issues.

Not sure on the accuracy of the float settings. I did rebuild the carbs so maybe something is wonky in there. I cringe at the thought of having to remove that assembly again!
User avatar
Johnyy Smoke
Posts: 722
Joined: Sat Nov 26, 2011 6:44 am
Location: Se Minnesota
Motorcycle: 1980 GL1100
Vetter. "Its like Deja Vu all over again".

Re: White smoke coming from exhaust on old barn-find

Post by Johnyy Smoke »

You must be sure of the float settings. "close enough" quite simply, will not work.
A gauge is most useful while doing this job. They must be of the same height from heel to toe. 15.5 mm for my 1980. Also be sure the floats are not bent in any way. All 4 of mine were bent in some manner or other- and the carbs had never been opened :?. Vibration over the years is the culprit, I suspect.
Randacks (sp?) web site has an excellent article complete with pics that makes the importance of this topic more clear, and easier to understand.
Perhaps the carbs are flooding the machine out. This would lead to hydro lock eventually, and we don't like that, nor will your motor.
Let us know how it goes. Regards, Johnny
User avatar
Maz
Posts: 796
Joined: Tue May 19, 2015 4:43 am
Location: Kent, UK
Motorcycle: 1975 GL1000K1
1976 CB500T
1979 CB750L
1990 Yamaha FJ1200
1993 Suzuki GS500E

Re: White smoke coming from exhaust on old barn-find

Post by Maz »

puttersup wrote:I am currently in the process of getting an 81 Interstate up and running after sitting in a barn for a number of years.

After rebuilding the carbs, changing the fuel pump, adding some new fuel, changing the plugs and oil and oil filter and ensuring there was antifreeze, at 2 AM this morning I fired it up for the first time in what I am sure is a very long time.

However, while it sounds fantastic, I have to have it fully choked to keep it running, and it is blowing lots of white/grey smoke. I have let it run long enough to fill the neighborhood with smoke (5 mins or so) twice, hoping that any bad gas in the system might burn off, but no luck.

What is going on, and what do I need to do next?
You are probably already aware of this (but a reminder doesn't hurt..) Change the timing belts sooner rather than later before running the motor much more.
Maz
Ironically, Common Sense is the LEAST common of all senses!
puttersup
Posts: 10
Joined: Wed Aug 03, 2016 6:41 pm
Location: prince rupert bc canada
Motorcycle: 1983 GL1100 Interstate

Re: White smoke coming from exhaust on old barn-find

Post by puttersup »

Thanks all for your great input.

It seems that at least to some degree a few of you were right...just needed to burn the junk out.

The bike won't stay running at idle but does when I throttle up. I held it at 3 grand for about 15 minutes and eventually most of the smoke cleared up.

I will still look at compression, the timing belt and a few other things you folks have recommended.

The next thing now, is that although it will stay running (very smoothly) at 3 thousand RPM, it won't run at idle. What do I need to look for here? Would this relate to the idle jets and having them tuned properly?

Thanks!
User avatar
Aussie81Interstate
Posts: 1178
Joined: Thu Nov 27, 2014 2:34 am
Location: Penrith Australia
Motorcycle: 2001 GL1500F6C Valkyrie
1982 CX500 Turbo (Historic registration - finally)
1981 GL1100 Interstate (sold)
1988 GL1500 (sold)

Re: White smoke coming from exhaust on old barn-find

Post by Aussie81Interstate »

Strip and clean the carbs - slow jets sound like they are plugged up...
User avatar
RBGERSON
Posts: 3233
Joined: Tue Mar 09, 2010 7:57 am
Location: SCOTTSDALE, AZ
Motorcycle: 98 SE GL 1500
had every year from 75 to 83

Re: White smoke coming from exhaust on old barn-find

Post by RBGERSON »

+1 slow jets..80-81 jets are pressed in and hard to get out but you have to clean the side ports and the center shaft..so they have to come out..82-83's screwed in and easier to remove..
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB
puttersup
Posts: 10
Joined: Wed Aug 03, 2016 6:41 pm
Location: prince rupert bc canada
Motorcycle: 1983 GL1100 Interstate

Re: White smoke coming from exhaust on old barn-find

Post by puttersup »

Aussie81Interstate wrote:Strip and clean the carbs - slow jets sound like they are plugged up...
Thanks Aussie, I actually put new jets in all four carbs. Manual setting recommends opening 1 1/4 turn after installation, should I back them out more?
puttersup
Posts: 10
Joined: Wed Aug 03, 2016 6:41 pm
Location: prince rupert bc canada
Motorcycle: 1983 GL1100 Interstate

Re: White smoke coming from exhaust on old barn-find

Post by puttersup »

RBGERSON wrote:+1 slow jets..80-81 jets are pressed in and hard to get out but you have to clean the side ports and the center shaft..so they have to come out..82-83's screwed in and easier to remove..
Interesting...I did replace the jets and they were screw in...could I actually have an 82? I will have to dig in to this!
User avatar
spiralout
Posts: 1202
Joined: Sun Feb 17, 2013 6:41 pm
Location: Alabama
Motorcycle: 1975 GL1000 (gone)
1980 GL1100I (with '77 1000 engine)
1996 GL1500 SE

Re: White smoke coming from exhaust on old barn-find

Post by spiralout »

puttersup wrote:
Aussie81Interstate wrote:Strip and clean the carbs - slow jets sound like they are plugged up...
Thanks Aussie, I actually put new jets in all four carbs. Manual setting recommends opening 1 1/4 turn after installation, should I back them out more?
You replaced the jets or pilot screws?
User avatar
dingdong
Posts: 4071
Joined: Thu Apr 08, 2010 8:35 am
Location: Oklahoma City
Motorcycle: 1976 gl1000
1993 gl1500A
2004 NRX1800 Rune SOLD

Re: White smoke coming from exhaust on old barn-find

Post by dingdong »

Did you do this?????

   Never miss a video: Subscribe to the GoldwingDocs YouTube channel today!
puttersup
Posts: 10
Joined: Wed Aug 03, 2016 6:41 pm
Location: prince rupert bc canada
Motorcycle: 1983 GL1100 Interstate

Re: White smoke coming from exhaust on old barn-find

Post by puttersup »

spiralout wrote:
puttersup wrote:
Aussie81Interstate wrote:Strip and clean the carbs - slow jets sound like they are plugged up...
Thanks Aussie, I actually put new jets in all four carbs. Manual setting recommends opening 1 1/4 turn after installation, should I back them out more?
You replaced the jets or pilot screws?
Sorry, I replaced pilot screws, cleaned jets.


Post Reply