84 Interstate, bad MPG and nose burning smell.


Information and questions on GL1200 Goldwings (1984-1987)
  • Sponsored Links
User avatar
starfleetengineer
Posts: 329
Joined: Fri Jul 23, 2010 7:02 pm
Location: Elkhart, Indiana
Motorcycle: 1979 Yamaha 650 Special
1978 CB750
1980 Yamaha 650 Special
1983 Honda V65 Magna 1100c
1984 GL1200I Interstate

84 Interstate, bad MPG and nose burning smell.

Postby starfleetengineer » Sun Aug 01, 2010 9:44 pm



I haven't had the old girl long, but I have noticed besides the noise in the back of the engine, that my MPG sucks. About 70 to 80 miles a tank. I also noticed tonight when I put her away that the exh. smell burnt my nose. I have changed the plugs and she ran great other than the noise. I do have the puff of blue smoke on start up like others have talked about. I almost think one of the plugs has fouled out. Down shifting or high rev slow down, " 3000-4000rpms" I get a backfire. My daughters boyfriend said I shot a flame out the exh. pipe. I have put 4 tanks of fresh gas with SeaFoam though her so far. But the smell is the killer. I don't know for sure what is causeing it. But I hope someone has had the bad smell problem and found the cure. My V65 was alot easier to work on and diag.

Rick


How many times do I have to tell ya,,, The right tool for the right job!

goldtr6c
Posts: 147
Joined: Tue May 11, 2010 11:17 am
Location: Hitchcock, Tx
Motorcycle: 1985 GL1200 LTD
1982 GL1100 STD
1976 GL1000 "800lb Canary"

Re: 84 Interstate, bad MPG and nose burning smell.

Postby goldtr6c » Mon Aug 02, 2010 3:27 pm

From the description it sounds like your float needles have stuck in the open position, probably from the bike sitting idle for a spell. Old gas, turned to varnish and drying out can make a good glue. If you only got about 80 miles from a tank full of gas, you are most likely pumping raw fuel from the tank to the muffler, not good. A too rich condition like this can wash all the oil from the pistons and rings causing excessive wear. You may also have gas working past the rings and diluting the crankcase oil, not good either. My suggestion is to get the carbs pulled, cleaned, and try again with fresh oil in the engine. I think when you get past the frustration of getting this straightened out, you'll end up with a machine you'll really like and enjoy. Good luck!

Wingrider63
Posts: 17
Joined: Sun Jun 20, 2010 4:50 pm
Location: Devils Lake, N.D.
Motorcycle: 1984 Honda Goldwing Interstate

Re: 84 Interstate, bad MPG and nose burning smell.

Postby Wingrider63 » Wed Aug 04, 2010 9:40 am

I'd say all of the above are true and possible. I'd go two more. Synch your carbs and verify the timing. ;) Keep us informed.

rrmiller73
Posts: 42
Joined: Tue Nov 10, 2009 12:16 pm
Location: Mt. Juliet, TN
Motorcycle: 1984 GL1200 Aspencade

Re: 84 Interstate, bad MPG and nose burning smell.

Postby rrmiller73 » Fri Aug 06, 2010 6:41 pm

My (set under a tree for a while) 1200 did the same thing. Mine took new needle and seats and jets(hi and low) and idle mixture needles before it ran good. Get them from Honda The new cheap Internet needle and seats leaked as well. Check the low idle air cut off valve on the intake manifold as well (It makes you need joke all the time if it's bad). Then adjust and synch. Took me 3 tries at the carbs and a month putting parts in them a piece at a time. Sure was frustrating. Mine now runs fine and get 37 mpg or so around town and 42 or so cruisin.

User avatar
starfleetengineer
Posts: 329
Joined: Fri Jul 23, 2010 7:02 pm
Location: Elkhart, Indiana
Motorcycle: 1979 Yamaha 650 Special
1978 CB750
1980 Yamaha 650 Special
1983 Honda V65 Magna 1100c
1984 GL1200I Interstate

Re: 84 Interstate, bad MPG and nose burning smell.

Postby starfleetengineer » Fri Aug 06, 2010 7:27 pm

I have never had to choke it once to start it. She fires up great. I have noticed on a full tank she runs a little bad when you make hard corners. I can smell the unburned gas now that I have ran a few tanks. Don't think I can work on it this weekend dew to youngest 21 b-day party. once I get a book I can see more of what I am looking at and where it is. I also think the timing is off. Kinda acts like my old chevy when it was off. The accelleration sucks all the way around. But she will get up to speed fairly fast. The first thing I'll check is the timing then go to the carbs. If I have to get parts from Honda, I'll swallow my toung and go. But I hate our Honda shop! Keep the ideas coming cause I'll check them all. At 56 K she should become a strong running bike!

Thanks for all the help!!
How many times do I have to tell ya,,, The right tool for the right job!

rrmiller73
Posts: 42
Joined: Tue Nov 10, 2009 12:16 pm
Location: Mt. Juliet, TN
Motorcycle: 1984 GL1200 Aspencade

Re: 84 Interstate, bad MPG and nose burning smell.

Postby rrmiller73 » Fri Aug 06, 2010 8:37 pm

You can download the manuals from this sight. The timing is not adjustable that I know of. There is a vacume advance that might not be working but it doesn't change the timing a lot like the old point distributors in cars. Down load the manuals and read up.

rrmiller73
Posts: 42
Joined: Tue Nov 10, 2009 12:16 pm
Location: Mt. Juliet, TN
Motorcycle: 1984 GL1200 Aspencade

Re: 84 Interstate, bad MPG and nose burning smell.

Postby rrmiller73 » Fri Aug 06, 2010 8:40 pm

Added note: The valve timing could be off a tooth. Probably should change the timing belts anyway if you don't know there age.




Return to “GL1200 Information & Questions”




Who is online

Users browsing this forum: No registered users and 1 guest