Bike Running Sh*t when cold

NJguy · #1 20th July 2007, 06:12 PM

The bike is bogging down and not revving up and stalling at the lights when cold. This has just started to happen this week and has gotten gradually worse until today when it was downright dangerous. Once she's hot not a bother. I changed the air filter and plugs last weekend so I'm probably to blame I also slid back the carbs to make sure there was no restriction in there. She never gave this trouble before even in the depths of winter 30 seconds on full choke was all that was required. Any ideas? To change the plugs the tank came off and I also had to undo one coolant hose from the t-stat housing and I also lubed the throttle and choke cables but did no adjustments to them at all. On full choke she turns over a 3k rpm it used to be around 32k t0 34k. Its an ER-5 that has otherwise been bullet proof where do you reckon I went wrong/
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triumph · #2 20th July 2007, 06:17 PM

you might have done something to the choke when you had the carb apart or affected the mixture without realising. Did you get a good seal between the carb and barrel when you put it back?

corky2004 · #3 20th July 2007, 06:19 PM

Originally Posted by NJguy

The bike is bogging down and not revving up and stalling at the lights when cold. This has just started to happen this week and has gotten gradually worse until today when it was downright dangerous. Once she's hot not a bother. I changed the air filter and plugs last weekend so I'm probably to blame I also slid back the carbs to make sure there was no restriction in there. She never gave this trouble before even in the depths of winter 30 seconds on full choke was all that was required. Any ideas? To change the plugs the tank came off and I also had to undo one coolant hose from the t-stat housing and I also lubed the throttle and choke cables but did no adjustments to them at all. On full choke she turns over a 3k rpm it used to be around 32k t0 34k. Its an ER-5 that has otherwise been bullet proof where do you reckon I went wrong/
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Maybe ye knocked the idle speed knob by accident and turned down the idle speed. If you turn it up even 500 rpm it may make a difference
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NJguy · #4 20th July 2007, 06:31 PM

But when this crap is happening if I fully open the throttle she'll go to about 6k rpm and that's it for like 10-20 seconds and then boom she'll take off and wind up to redline so making progress you have to wide open the throttle and hope that she doesn't suddenly decide to go this is only for the first few miles until hot.

triumph · #5 20th July 2007, 06:38 PM

sounds like a question for chopper, my carb has done funny things before too. My choke used to be like a nitrous switch! only lasted about 10 miles though. turn on the choke and the power would sore! if i'd let it go id say my ped would have done 65mph but blown the engine

ridelikeaturtle · #6 20th July 2007, 06:45 PM

I'd go back all the way down to the plugs... doublecheck the ones you put in are the same as what came out; check all connections, vacuum and electrical; maybe you didn't seat the airbox in properly? Finally, recheck all the plugs (and the coil connections to them!) to see if any are fouled.

Check for air leaks around the carbs -- when running, spray some starting fluid (ether) or WD40 will work too (it's not as combustible so it's safer but if there is air getting sucked into the carb/manifold it's very obvious w/starting fluid) around the base of the carbs. If the idle changes, you've got air getting sucked in somewhere it shouldn't. It's pretty common for rubber seals to age and weather and crack.

panther600 · #7 20th July 2007, 06:49 PM

you didnt drop a plug on the ground and put it in then.dont fiddle with the carb unless you know what you doing.chopper when he comes on will have more ideas.sounds like a juice problem.

Gellum · #8 20th July 2007, 07:02 PM

What type of bike are you dealing with ? Does the bike need vavle adjustments? could be losing compression. Bad Compression is masked when hot. Whats your spark plug telling you when you start it cold ?
If its black and wet its getting too much fuel.

NJguy · #9 20th July 2007, 07:47 PM

I wish I could have a go at sorting this bike out now but its pissing I think its something that I'm after doing as this bike ran like clock work until I messed with it
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I'll get it sorted hopefully somethin simple

zx9r · #10 20th July 2007, 07:51 PM

sounds like mabey you dident put the carbs back on right i would have a look at that check there sealed correctly

LittleBlackBlade · #11 21st July 2007, 12:49 AM

Originally Posted by zx9r

sounds like mabey you dident put the carbs back on right i would have a look at that check there sealed correctly

Sound's like a plan
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NJguy · #12 21st July 2007, 02:07 PM

Found vent line completed routed wrong and kinked beyind regoniztion under fuel tank mow she's back to her good little self
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panther600 · #13 21st July 2007, 02:56 PM

Originally Posted by NJguy

Found vent line completed routed wrong and kinked beyind regoniztion under fuel tank mow she's back to her good little self
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good man yourself.pheew sigh of relief on youre part and you sorted it yourself without it costing you a penny to go to someone else.
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