gs1100g puss bucket

[Akzle]

yeah, good point..i kinda left everything as it was in the carbs and just cleaned them etc..if it comes down to tuning ill go through jet sizes and needle posi etc.....im just kinda sure something else is shitting it, like an air leak, a fucked petcock diaphramm and a crook HT lead all once

plug chop.

Fuel starve is consternating. Is the vac hose to the petcobk good? (if you suck on it, does fuel flow)

[Akzle]

bikes run like they had the carb on all the time.

i should hope so, im not sure how good a bike goes with the carb off...

[fridayflash]

ill try crc start tmw...got a lazy week with work so good time to be faffing around with this bike. ...trying to think if i know anyone local with vaccum guages to sync up my carbs

[fridayflash]

plug chop.

Fuel starve is consternating. Is the vac hose to the petcobk good? (if you suck on it, does fuel flow)

yep, had the petcock apart and checked the sucky part works good as gold eh

[wickle]

Eddie wet weekend coming up , do what to bring the bike around to work on in garage , or are you allowed to put it in the lounge cause there's no other room at your place big enough.

[pete376403]

Ive got a Cycleworks 4-1 on my 1100G (GK actually but that's only extra Tupperware) and I've replaced the "muffler" with a CBR600 can which I think is probably more restrictive than the Cycleworks tube - definitely quieter - and it still runs really well right through the rev range. Its also got a K&N air filter.
Is the charging system working well on your bike? Breaking down in the upper revs sounds to me like a weak spark, and early 80s Suzuki electrics were not known for quality. Check the state of the connectors from the alternator to the regulator. When I repaired the connections I extended the cables to mount the regulator under the steering head so it gets a bit more cooling - the standard location under the battery box and behind the gearbox is pretty shrouded.

+1 for www.thegsresources.com

[fridayflash]

the lounge has mark on the carpet from last time i had a bike in there!!!!
this weekend sounds good mate, im dead set on removing the carbs to inspect those intakes...if your 1000 appears to be sporting old shabby ones with bits of tyre tube hanging off them, and mine myseriously gains a near new set, dont be suspicious...its how its always been!

[fridayflash]

Ive got a Cycleworks 4-1 on my 1100G (GK actually but that's only extra Tupperware) and I've replaced the "muffler" with a CBR600 can which I think is probably more restrictive than the Cycleworks tube - definitely quieter - and it still runs really well right through the rev range. Its also got a K&N air filter.
Is the charging system working well on your bike? Breaking down in the upper revs sounds to me like a weak spark, and early 80s Suzuki electrics were not known for quality. Check the state of the connectors from the alternator to the regulator. When I repaired the connections I extended the cables to mount the regulator under the steering head so it gets a bit more cooling - the standard location under the battery box and behind the gearbox is pretty shrouded.

+1 for www.thegsresources.com

i have been a bit suss about the spark...whilst looking for causes i took off the plug leads, one at a time during idle, cylinder 2,3&4 all were affected in the usual way (about 25%) yet cylinder 1 only ebbed a fraction (5%) or so. have some alternative coils/leads to try this weekend.am certain ive got more that one issue at play with this bike. i recon my charging is ok....battery is always full and i ride with headlight on naturally. will check charging volts at the weekend

[nzspokes]

Have you sniffed the oil? I had a bike with dead float valves that had oil that smelt of petrol. It bogged a bit at just on throttle but was ok the rest of the time. New float valves and an oil change and it was a little rocket.

[fridayflash]

Have you sniffed the oil? I had a bike with dead float valves that had oil that smelt of petrol. It bogged a bit at just on throttle but was ok the rest of the time. New float valves and an oil change and it was a little rocket.

ill do that tmw...its a possibility although at this stage im pretty sure float valves are seating and sealing good but anythings worth a shot..cheers!

[T.W.R]

ah yes, pipe is a 4 into 1 which is definately a bit of a bug bear too...far to restricting so ive opened it up by drilling a heap if 12mm holes, it doesnt sound great but its free'd it up enough for now.

Pointless if it's running the standard airbox & filter and if the carbs haven't been adjusted to suit. can't free up the outlet if the inlet hasn't been freed up also...both have to work together.

CRC engine start is a goodin for finding any air leaks mate.

pretty sure wd40 & crc spray a similar atomisation..ok if you haven't got anything else on hand but still a heavy liquid. A water mist sprayer is the best and offers a much finer atomisation for detecting leaks.

plug chop.

Useless unless a fresh set of plugs are used and it isn't going show whats happening concerning a mid throttle issue.

i have been a bit suss about the spark...whilst looking for causes i took off the plug leads, one at a time during idle, cylinder 2,3&4 all were affected in the usual way (about 25%) yet cylinder 1 only ebbed a fraction (5%) or so. have some alternative coils/leads to try this weekend.

If your leads are stiff then you're better off replacing them. check the resistance of the coils & leads once with the leads connected to the coils & once without the leads...should be somewhere around 2.8~3.2 ohms

[fridayflash]

had a bit of a eureka moment today chaps, took carbs off to inspect intake boots, they were ok but the flat type o-ring seals that fit in the nice groove
and mate up against the ports were all flat, brittle and broken, bits missing etc so got a set of new roundie rubbers, fitted them up..also found a split in the vaccum hose near the petcock end which id never seen before (and may be the cause of even more airleak and a failure of the petcock diaphram to open sufficiently) which could be the cause of my fuel starvation. anyways, after reassembly, tank on etc..the bike instantly fired up and idled better than in ever has..revved hard n fast off the throttle and dropped revs nice n quickwhen the throttle was chopped..fantastic! was great to hear the bike idle and rev like a normal ujm should..the exhaust didnt even sound too bad, upon riding it i found it runs much more crisp although does have a slight boggy spot around 3.5k rpm, seeming a little rich, i had opened the mixture screws an extra half turn in the past so re-set them. next step would be to pull the carbs again and re-set float height down to spec, and check needle posi etc.
any othe advice for a boggy spot between 3&4000rpm? otherwise today was a VAST improvement, thanks to all who offered advice

[F5 Dave]

Tape up the drilled airbox holes as experiment. Airfilter foam is surprisingly sensitive. Std & proper foam oil before you go much further tuning.

Does it have a fuel filter? They are totally neces on a Suzuki, but there is no room for one without kinking the fuel line on its tight curve. Been caught by this when I was convinced the line should be ok, but internally pinched.

Think I used a right angle one. Check if tank has been sealed with a torch. Breather at top lip & cap need to be checked.

I took my regulator off as soon as I got it going. It was working but it would have failed. Replaced it with a Yam (RZ350) finned one, but many will do, which has extra wire but can explain how to sort that (feedback to a switched power wire).

[fridayflash]

thanks dave, i havent drilled into the airbox...did to the tailpipe end tho....and added a new unifilter, oild with engine oil lol do you reckon i should run airbox with rear snorkel out? ill leave that little option out until i have it fairly closely tuned and re-address them when ive got a new 4n1. btw my bike has a finned reg/rec too, and mounted nicely behing a side cover where circulation wouldnt be too bad. much better than my old gsx750 which was waaay downunder airbox/battery area

[F5 Dave]

Try oiling with air filter oil. You can really screw up carburetion with airbox mods. Is the reg still the 5 wire Suzy one? They are finned, but will still fail.