GL1000 backfiring


Information and questions on GL1000 Goldwings (1975-1979)
Post Reply
User avatar
scotterichmond
Posts: 613
Joined: Fri May 06, 2011 3:49 pm
Location: Marblemount,wa
Motorcycle: 1975 GL1000
[img]http://images.goldwingdocs.com/scotterichmond_32376/Modestly_restored_1975_GL1000_750/engine_repainted_even_new_embl_3919.jpg[/img]

GL1000 backfiring

Post by scotterichmond »



Working on a friends new to him bike. most of you know this is not my first GL1000 I have worked on.
I've done the carbs and points( set as per Randakk), air cleaner is new,timiming belts look new and in time. fuel filter good too. Checked valve adjustment,(was right on) I have a bad (loud ) explosion when opening the throttle and hesitates. Not even wanting to take it out and test ride ( I like to make round trips)

I am suspecting the condensor, I believe if it were bad it would do this. I forgot how to check one though. and I have one I "think" is a good spare, but want to test it to be sure. (they are expensive to buy)

And thoughts ? would you suspect the condensor too?

Scott


User avatar
scotterichmond
Posts: 613
Joined: Fri May 06, 2011 3:49 pm
Location: Marblemount,wa
Motorcycle: 1975 GL1000
[img]http://images.goldwingdocs.com/scotterichmond_32376/Modestly_restored_1975_GL1000_750/engine_repainted_even_new_embl_3919.jpg[/img]

Re: GL1000 backfiring

Post by scotterichmond »

I'm sure this spare condensor is new (no marks from installing) so I am going to shange out the condensor and see if it helps. The points I took out were very pitted and transffered metal, and one of the new point sets is arcing.
User avatar
terryt
Posts: 288
Joined: Mon Jul 23, 2012 4:52 pm
Location: United Kingdom
Motorcycle: 1979 gl1000 trike
1989 gl1500 trike
1995 Kawasaki gt550 Trike

Re: GL1000 backfiring

Post by terryt »

I would check the timing again. Leads on wrong late timing or carbs flooding. Condenser if faulty would give weak or no spark. It do tell you in the manual how to test the condenser
User avatar
scotterichmond
Posts: 613
Joined: Fri May 06, 2011 3:49 pm
Location: Marblemount,wa
Motorcycle: 1975 GL1000
[img]http://images.goldwingdocs.com/scotterichmond_32376/Modestly_restored_1975_GL1000_750/engine_repainted_even_new_embl_3919.jpg[/img]

Re: GL1000 backfiring

Post by scotterichmond »

it does, but you need a special tester. points and timing check again, all good.
User avatar
terryt
Posts: 288
Joined: Mon Jul 23, 2012 4:52 pm
Location: United Kingdom
Motorcycle: 1979 gl1000 trike
1989 gl1500 trike
1995 Kawasaki gt550 Trike

Re: GL1000 backfiring

Post by terryt »

scotterichmond wrote:it does, but you need a special tester. points and timing check again, all good.
have a look here it tells you how to test without a meter
http://wiki.answers.com/Q/How_do_you_te ... motorcycle
User avatar
scotterichmond
Posts: 613
Joined: Fri May 06, 2011 3:49 pm
Location: Marblemount,wa
Motorcycle: 1975 GL1000
[img]http://images.goldwingdocs.com/scotterichmond_32376/Modestly_restored_1975_GL1000_750/engine_repainted_even_new_embl_3919.jpg[/img]

Re: GL1000 backfiring

Post by scotterichmond »

you are correct, I will do that . Just forgot I guess.

CRS I suppose
User avatar
terryt
Posts: 288
Joined: Mon Jul 23, 2012 4:52 pm
Location: United Kingdom
Motorcycle: 1979 gl1000 trike
1989 gl1500 trike
1995 Kawasaki gt550 Trike

Re: GL1000 backfiring

Post by terryt »

scotterichmond wrote:you are correct, I will do that . Just forgot I guess.

CRS I suppose
just don't be holding the condenser in your hand when you do it.
User avatar
scotterichmond
Posts: 613
Joined: Fri May 06, 2011 3:49 pm
Location: Marblemount,wa
Motorcycle: 1975 GL1000
[img]http://images.goldwingdocs.com/scotterichmond_32376/Modestly_restored_1975_GL1000_750/engine_repainted_even_new_embl_3919.jpg[/img]

Re: GL1000 backfiring

Post by scotterichmond »

I got it right finally.
Condensor did not help a thing,( it's new now though)
I checked my point gap again ( no beer this time ) wrong. put it on the high spot on the lobe.CK.
regapped reset timing( this time with paper in the opposite points) . fired it up.
purrs like a kitten and roars like a lion. sync is next and good to go.

I was just in too big a hurry, and not in the proper state of mind to do it right the first time.


Post Reply