Yeah. 1 & 3 plugs look identical, including comparing spark with the plug sitting on the head.
Low/non-adjustable vacuum at only one carb [GL1100]
Moderators: CYBORG, Oldewing, robin1731, Forum Moderators
-
- Chrome Member
- Posts: 109
- Joined: Sun Aug 05, 2018 6:02 pm
- gltriker
- Honored Life Member
- Posts: 5053
- Joined: Fri Sep 24, 2010 9:11 pm
- Location: central NY State
Re: Low/non-adjustable vacuum at only one carb [GL1100]
If the unchanging one inch of gauge measured vacuum is not related to malfunctioning testing components attached to the #1 carburetor intake manifold test port, might this phenomenon Mr. Lormans discovered hidden inside his bike's engine exhaust header cause a very low measurable intake manifold vacuum situation?Whiskerfish wrote: ↑Tue May 02, 2023 3:48 pm At idle those slides will not have squat for effect so I am really doubting that is the issue.
Check your intake clamps when the engine is hot. i sometime take them loose after a couple heats cycles then crank them back down while it is good and hot.
Also swap the hoses and the adapters to the gauge between 1 and 3 to see if the issue stays with # 1 . Just to check your test equipment. I once had a brass adapter that screws into the intake runner with a crack that drove me nuts!!
https://ngwclub.com/forum/viewtopic.php ... sed+header
Cliff (74yrs )
Keep your eyes and ears open and you'll learn something new, everyday.
New users please visit our "Shop Talk" for common tips and help: <---jdvorchak
http://www.ngwclub.com/forum/page/ST
^^^^^^^click up here^^^^^
RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi
"Can't see the paint when your looking thru the handlebars..........." -Oldewing
"I'd rather Ride than Shine" -RAT Me Too!!
Cliff
'75 GL1000 home built trike; http://www.ngwclub.com/forum/viewtopic.php?f=30&t=39996
October,2017 BOTM https://nakedgoldwingsclub.com/forum/page/Welcome
previous rides:
1953 H-D Servi-car, naked, 1969-1978 (serial#53G1559 committed to memory!)
1980 CB900 Custom (triked) 1997-2003 .... R.I.P.
Keep your eyes and ears open and you'll learn something new, everyday.
New users please visit our "Shop Talk" for common tips and help: <---jdvorchak
http://www.ngwclub.com/forum/page/ST
^^^^^^^click up here^^^^^
RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi
"Can't see the paint when your looking thru the handlebars..........." -Oldewing
"I'd rather Ride than Shine" -RAT Me Too!!
Cliff
'75 GL1000 home built trike; http://www.ngwclub.com/forum/viewtopic.php?f=30&t=39996
October,2017 BOTM https://nakedgoldwingsclub.com/forum/page/Welcome
previous rides:
1953 H-D Servi-car, naked, 1969-1978 (serial#53G1559 committed to memory!)
1980 CB900 Custom (triked) 1997-2003 .... R.I.P.
- Fred Camper
- Vice President
- Posts: 6890
- Joined: Wed Aug 12, 2009 9:38 pm
- My Album: http://www.ngwclub.com/gallery/v/wingmans/Jeff+Bozeman/
- Location: Metro Detroit
- Contact:
Re: Low/non-adjustable vacuum at only one carb [GL1100]
Cliff, how oh how can you recall a 2012 post so fast in 2023? Thank you for posting.
Proud member of the NGW Cartel (Rochester MI)
1977 GL1000 BADDOG (April 2012 BOTM)
1976 LTD - '993 LTD...and so it begins'
You should remember that it's peace of mind you're after and not just fixing the machine. R.Pirsig
1977 GL1000 BADDOG (April 2012 BOTM)
1976 LTD - '993 LTD...and so it begins'
You should remember that it's peace of mind you're after and not just fixing the machine. R.Pirsig
- gltriker
- Honored Life Member
- Posts: 5053
- Joined: Fri Sep 24, 2010 9:11 pm
- Location: central NY State
Re: Low/non-adjustable vacuum at only one carb [GL1100]
Fred Camper wrote: ↑Fri May 05, 2023 8:51 am Cliff, how oh how can you recall a 2012 post so fast in 2023? Thank you for posting.
Cliff (74yrs )
Keep your eyes and ears open and you'll learn something new, everyday.
New users please visit our "Shop Talk" for common tips and help: <---jdvorchak
http://www.ngwclub.com/forum/page/ST
^^^^^^^click up here^^^^^
RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi
"Can't see the paint when your looking thru the handlebars..........." -Oldewing
"I'd rather Ride than Shine" -RAT Me Too!!
Cliff
'75 GL1000 home built trike; http://www.ngwclub.com/forum/viewtopic.php?f=30&t=39996
October,2017 BOTM https://nakedgoldwingsclub.com/forum/page/Welcome
previous rides:
1953 H-D Servi-car, naked, 1969-1978 (serial#53G1559 committed to memory!)
1980 CB900 Custom (triked) 1997-2003 .... R.I.P.
Keep your eyes and ears open and you'll learn something new, everyday.
New users please visit our "Shop Talk" for common tips and help: <---jdvorchak
http://www.ngwclub.com/forum/page/ST
^^^^^^^click up here^^^^^
RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi
"Can't see the paint when your looking thru the handlebars..........." -Oldewing
"I'd rather Ride than Shine" -RAT Me Too!!
Cliff
'75 GL1000 home built trike; http://www.ngwclub.com/forum/viewtopic.php?f=30&t=39996
October,2017 BOTM https://nakedgoldwingsclub.com/forum/page/Welcome
previous rides:
1953 H-D Servi-car, naked, 1969-1978 (serial#53G1559 committed to memory!)
1980 CB900 Custom (triked) 1997-2003 .... R.I.P.
-
- Chrome Member
- Posts: 109
- Joined: Sun Aug 05, 2018 6:02 pm
Re: Low/non-adjustable vacuum at only one carb [GL1100]
Lesson learned: Always just replace the slow jets when rebuilding a carb rack. I lost track of how many times I pulled the rack off of this bike, but I finally had enough and bought new jets and now the bike is running a ton better, pulling much more vacuum (10"+), and #1 is now in line with the other three and can be adjusted. I haven't had a chance to give it a ride and do a final carb synch, but the difference is remarkable with it just idling in the driveway. Honestly, I'm a little impressed with how well I got it running before with four bad jets.
EDIT: Forgot to mention that I also reset all the mixture screws. I may have lost track while I was setting them originally, because #1 (the original problem cylinder) was over a full turn farther out than the others. Not sure if that would have actually contributed to my issue or it was all the jets, but putting it out there for posterity in case someone else experiences a similar issue.
EDIT: Forgot to mention that I also reset all the mixture screws. I may have lost track while I was setting them originally, because #1 (the original problem cylinder) was over a full turn farther out than the others. Not sure if that would have actually contributed to my issue or it was all the jets, but putting it out there for posterity in case someone else experiences a similar issue.
- robin1731
- Membership Admin
- Posts: 21724
- Joined: Mon May 29, 2006 8:31 am
- Location: Decatur, Indiana
Re: Low/non-adjustable vacuum at only one carb [GL1100]
Hope you at least used OEM jets and not aftermarket.
I will say I've never had a jet I could not get clean. Might take a bit of work/effort, but i did get them open.
I will say I've never had a jet I could not get clean. Might take a bit of work/effort, but i did get them open.
1976 Goldwing Super Sport
1985 Honda Elite
1976 KZ900 Dragbike
1992 ZX7 Dragbike (KZ900 style motor w/NOS)
and a rotation of various purchases
Randakk approved Carb Rebuilder
1985 Honda Elite
1976 KZ900 Dragbike
1992 ZX7 Dragbike (KZ900 style motor w/NOS)
and a rotation of various purchases
Randakk approved Carb Rebuilder
-
- Gold Member
- Posts: 1116
- Joined: Tue Jun 02, 2020 8:39 am
- Location: NW Indiana,
Re: Low/non-adjustable vacuum at only one carb [GL1100]
Non-oe jets are definitely a mistake, ya never know what you’ll get. Keep in mind fuel metering is controlled not just by hole size but also by the length of that hole, longer = leaner , while shorter =‘s richer. The non oe jetting from places like eBay will be all over the map.
Being that you can easily get oe Keihin jets at fairly reasonable pricing I don’tsee a need to add another variable.
Being that you can easily get oe Keihin jets at fairly reasonable pricing I don’tsee a need to add another variable.
Red 1976 oe owner
1976 LTD restored
1980 CBX , in the que, to fix the ignorant heavy handed owner
1981 CBX
1977 CB750 K7
2014 FJR OE owner, sold
1980 GL1100
1984 GL1200 naked
1969 CL350, in the que
1976 LTD restored
1980 CBX , in the que, to fix the ignorant heavy handed owner
1981 CBX
1977 CB750 K7
2014 FJR OE owner, sold
1980 GL1100
1984 GL1200 naked
1969 CL350, in the que
-
- Similar Topics
- Replies
- Views
- Last post
-
- 9 Replies
- 682 Views
-
Last post by ericheath
-
- 58 Replies
- 1138 Views
-
Last post by 82aspy
-
- 6 Replies
- 250 Views
-
Last post by 5speed
-
- 29 Replies
- 1487 Views
-
Last post by Barney T Weasel