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I just picked up a bone stock 85 Gs1150, runs good when warmed up but its the cold bloodiest thing Ive ever seen. It has stock exhausts. Just curious if you would start out with richer pilots or go richer on the idle mixture screws. Is this normal on them or should I go thru the carbs, it has set for a while. I just picked it up today. Thanks for the help
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Go through the carbs, they are almost certainly at least a little gummed up.Originally posted by Katarat View Post
Go one size up on the pilots while you're in there.'20 Ducati Multistrada 1260S, '93 Ducati 750SS, '01 SV650S, '07 DL650, '01 DR-Z400S, '80 GS1000S, '85 RZ350 -
From the July 1982 Cycle World:
"...Suzukis as a group need a lot of choke fiddling during the first minute or two after startup. "1982 GS1100E V&H "SS" exhaust, APE pods, 1150 oil cooler, 140 speedo, 99.3 rear wheel HP, black engine, '83 red
2016 XL883L sigpic Two-tone blue and white. Almost 42 hp! Status: destroyed, now owned by the insurance company. The hole in my memory starts an hour before the accident and ends 24 hours after.Comment
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I wouldnt go up in the jetting till you have done the rebuild per the tutorial. If, after youve rebuilt them, you have a lot of trouble, THEN start jet swapping. Be mindful the proper way to start a GS is as follows:: Be sure the carbs are primed if it has sat for a longer time, full choke, hands off the throttle and hit the button. RPMS will jump up around 3,000ish with the choke on fully. just slowly back off the choke till it is maintaining around 1200 and let it warm up.
If you havent found this yet, heres the rebuild tutorial.S And surf the entire website and youll find many links and other useful info.
MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550
NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.
I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.Comment
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They are naturally cold blooded and take awhile to warm upMy stable
84 GSX1100EFG-10.62 @ 125 mph 64'' W/B.
85 GS1150-9.72@146mph stock W/B.
88 GSXR1100-dragbike 9.18@139.92mph/5.68@118mph.
98 Bandit 1200-9.38@146mph/6.02@121mph.
90 Suzuki GS 1425cc FBG Pro Stock chassis 5.42@124mph
06 GSXR750 10.44@135mph
00 Honda elite 80 pit bikeComment
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I gotta disagree on "don't mess with the jetting yet", or "naturally cold blooded" comments. Makes it sound like that behavior is somehow inherent to the basic design of the bike. It's just jetting.
Virtually all carbed bikes built from the late '70s on have very lean slow speed circuits to pass emissions regs. They all benefit from going up one size on the pilots, and setting the fuel screws properly. Faster warm up, less low speed surging and bucking, and smoother on/off throttle transitions. Makes daily use much more pleasant.'20 Ducati Multistrada 1260S, '93 Ducati 750SS, '01 SV650S, '07 DL650, '01 DR-Z400S, '80 GS1000S, '85 RZ350Comment
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Rich...would you take nitro pills before you were diagnosed with a heart problem? Of course not. He just picked the bike up and makes no mention of doing any maintenance. Funny thing how NO maintenance can make symptoms..HMMMM. A proper feel cant be made unless and until the maintenance is done and THEN you have the right starting point to draw conclusions...not jumping the gun and throwing parts at what may not need parts at all. Fools folly.MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550
NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.
I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.Comment
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Its just jetting AFTER all the maintenace is done and the symptoms persist or worsen.MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550
NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.
I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.Comment
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Did you read my first post?? Completely agree that carbs should be gone through, I said that. Not advocating fixing gummed up carbs by changing jetting.
My point is that the "symptoms" are there in a perfectly maintained stock bike, because the stock jetting was driven by emissions regs, not because it produced the best running bike. Why leave it that way?? Especially if you're in the carbs anyway to clean them??Last edited by RichDesmond; 10-05-2014, 08:52 PM.'20 Ducati Multistrada 1260S, '93 Ducati 750SS, '01 SV650S, '07 DL650, '01 DR-Z400S, '80 GS1000S, '85 RZ350Comment
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Rich,
I can agree with that. But only one size larger. As a motor gets older and the compression gets lower it will need to be richened up some also.Last edited by stetracer; 10-05-2014, 09:13 PM.My stable
84 GSX1100EFG-10.62 @ 125 mph 64'' W/B.
85 GS1150-9.72@146mph stock W/B.
88 GSXR1100-dragbike 9.18@139.92mph/5.68@118mph.
98 Bandit 1200-9.38@146mph/6.02@121mph.
90 Suzuki GS 1425cc FBG Pro Stock chassis 5.42@124mph
06 GSXR750 10.44@135mph
00 Honda elite 80 pit bikeComment
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And, ... as much as I advocate cleaning the carbs, "cold-bloodedness" is a CLASSIC sign of tight valves.
1. Clean the carbs (that would be the full "strip-and-dip, and change the o-rings" method of cleaning)
2. While the carbs are in "the dip", adjust the valves
3. When everything is back together, do a vacuum sync on the carbs and fine-tune the mixtures.
I'll bet you probably won't need to do anything else.
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mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
#1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
#2 son: 1980 GS1000G
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Siblings and Spouses
Mom's first ride
Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
(Click on my username in the upper-left corner for e-mail info.)Comment
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What was the stock CV jetting per the manual for the bike?? Is his 17.5 already a step up??? And another thing that can make the CVs run rich is bad sealing rubber caps over the pilot jet towers.MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550
NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.
I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.Comment
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What he said with a complete tune up you know plugs and air filter also and a oil change. And while the carbs are off do a compression test too just to know.Originally posted by Steve View PostAnd, ... as much as I advocate cleaning the carbs, "cold-bloodedness" is a CLASSIC sign of tight valves.
1. Clean the carbs (that would be the full "strip-and-dip, and change the o-rings" method of cleaning)
2. While the carbs are in "the dip", adjust the valves
3. When everything is back together, do a vacuum sync on the carbs and fine-tune the mixtures.
I'll bet you probably won't need to do anything else.
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Rich and Chuck are saying the same thing just different ways to fix it. I feel that once the carbs are off the carbs should be jetted one size larger unless he lives in the mountain or above 3500' then he should be fine with stock jetting.
But we are only talking a little change and the bike was made with the jetting close enough to keep it stock with nothing but a little hp loss and a little more heat. Man when I say it that way it sounds bad. I live at 10' above sea level so I run richer jets than some others do.
Chuck,
we used to call that screw the altitude adjustment screw or fuel screw and it will affect the entire throttle position if you open it up to much it will richened up the main circuit also that is why you only need to open it up a little to fix the lean factory setting and you could turn it back in a little if you ride in the mountains or in Florida summers without re jetting to keep the best air fuel mix.My stable
84 GSX1100EFG-10.62 @ 125 mph 64'' W/B.
85 GS1150-9.72@146mph stock W/B.
88 GSXR1100-dragbike 9.18@139.92mph/5.68@118mph.
98 Bandit 1200-9.38@146mph/6.02@121mph.
90 Suzuki GS 1425cc FBG Pro Stock chassis 5.42@124mph
06 GSXR750 10.44@135mph
00 Honda elite 80 pit bikeComment
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Katrat,
it seams you have the ability to decide wether or not to decide to re jet or not. It all depends on if you want every last bit of power and the bike to run a bit cooler or not. If your happy with how it run after it warms up then leave it be. But do all the maintance mentioned. Otherwise re jet it.My stable
84 GSX1100EFG-10.62 @ 125 mph 64'' W/B.
85 GS1150-9.72@146mph stock W/B.
88 GSXR1100-dragbike 9.18@139.92mph/5.68@118mph.
98 Bandit 1200-9.38@146mph/6.02@121mph.
90 Suzuki GS 1425cc FBG Pro Stock chassis 5.42@124mph
06 GSXR750 10.44@135mph
00 Honda elite 80 pit bikeComment
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dynajet always had you stay with stock pilots and richen up on the mixture screws.
i always did what they recommended with great results.Comment
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