bike coughing

patty · Post by **patty** » Sat Jan 12, 2008 8:34 pm

any 1 have any ideas on what to check on my stom next???

put all my goodies on over xmas and only just started to get out and try them all.

anyhow i noticed today and last weekend that my storm has developed a cough (a bit like a misfire)
only seems to happen every now and then and at low speeds.
if i ride along then dump the clutch it coughs when the revs drop.
if im going nice and easy it happens,also when trying to ride steady round the likes of roundabouts.
i did think it maybe something to do with the new airbox/carbs,but i re checked everything tonight and redone the balanceing.and it did not improve(although i dont think its a fuel problem)although i will put my old ones back on just to make sure ,if no one comes up with any other ideas.
just wondering if any of you have had this happen??could it be engine trouble??or electrical??

cheers
pat

Post by **sirch345** » Sat Jan 12, 2008 9:10 pm

If it's a random spit-back through the carbs at low rev's, even at tick over then they all do it

Well I say all, thats apparently not entirely true as some owners say they've never experienced this problem. I think most who have this happening turn the tick over up a little, say 1200 revs.

My bike started doing it more than normal at the end of last year and as I already had a new set of iridium spark plugs here ready to fit, I thought I would put them in not really thinking that would help, but it did. It changed it back to as it was

Chris.

PS. Out interest what airbox have you now fitted

Back again.
I knew it had been discussed recently:-
http://www.vtr1000.org/phpBB2/viewtopic.php?t=10485

patty · Post by **patty** » Sat Jan 12, 2008 10:12 pm

chris,
thanks for the reply,
the airbox as far as i can see is a standard honda one,with a k&n filter inside.
the only differences ive noted are as follows.

1 .the bending scoop thing that sits on top of my standard air box has been removed ,leaveing just a big hole for the air to go into.

2 .under the k&n filter there is 2 x little filters ,the same as my honda one,but these 2 have big black blocks covering them.

3 .there is a pipe comeing from underneath my new box that does not go anywhere a has a cable tie around it pulled tight.
this sound right????my old one does not have this pipe.

the guy i bought it all of told me it was all set up with the dynojetted carbs
for my full akrapovic.

the one thing i have noticed though since running the new carbs and box/filter i get alot of popping etc on shut down,and when reving in the garden tonight flames shooting out of the back,looks good!!! but i assume not good?????for the bike.
the old standard set up didnt do this.
cheers
pat.

lee67 · Post by **lee67** » Sun Jan 13, 2008 4:41 pm

its normal on dyno jetted/k&n equipped storms...mine does it, big coughs from the airbox at approx 2500 revs, as u say its right where ur revving for roundabouts etc...but before and after that rev range, oh boy...it flys

.....i have contemplated junking the dyno jets and k&n, just to see, cos it does make for fun and games, when going round wet roundabouts, and it farts bigtime

Post by **sirch345** » Mon Jan 14, 2008 7:37 pm

Hi Pat,

It looks like Lee has beaten me to it. Probably not the answer you were looking for, but it seems you're not on your own.

That pipe underneath the airbox bent over with a cable tie on it, I expect that could be a non UK airbox and not needed for a UK spec bike.

Numbers 1 and 2 are most likely standard mods for a K&N dyno-jet set-up. Someone else who has the same set-up may be able to confirm.

Cheers,

Chris.

PS. You might find a dyno run could be a good idea, just to confirm everything is as good as it can be. A word of warning though, if you do decide to get it checked out on a dyno don't turn up with a really good or new rear tyre

lee67 · Post by **lee67** » Mon Jan 28, 2008 6:13 pm

just to let u all know, today after months of suffering above problems( a nightmare thru villages and roundabouts etc)...we tried a used standard air filter in place of k&n....100% cured.....no coughs farts bangs stutters or anything, smooth as u like from 0-redline

..so harley plans are on hold for a while

patty · Post by **patty** » Mon Jan 28, 2008 6:40 pm

lee,
thats good to know ,might go into the shed and do mine.......
will it be ok to run the honda filter even though we have dynojetted carbs????

cheers
pat.

lee67 · Post by **lee67** » Mon Jan 28, 2008 7:26 pm

yeah pat, it wont harm anything..try it and see cos as i say it has transformed mine...had a good read of my dynojet kit books and it states, with dynojet stage 1 jets...run a standard filter...i was all for getting shut of the storm as it was a nightmare to ride below 3000 revs, which as u can imagine , is normal revs for towns/roundabouts esp..now it runs fantastic 100% smooth as u like....let me know how u get on

patty · Post by **patty** » Mon Jan 28, 2008 7:34 pm

funny that as mine ran fine before i put on the dynojetted carbs and k+n.

but as i bought the set up of the same guy i bought my exhaust off i thought i would have it and marry everything up(Â£160 down the drain )

just been and put my standard honda one back in ,but left the dynojetted carbs on,and i will try that.
WHEN all the salt round here gets rained away ,i think my local council have a few tons left to get rid of ,as its down every bloody night.
went out a couple of weeks ago and the bloody stuff is trying to eat my storm before my eyes...it gets everywhere.

pat.

lee67 · Post by **lee67** » Mon Jan 28, 2008 7:54 pm

just starting the bike with the standard filter back in; i could tell a diff staright away, it revved cleanly, wheras with k&n in blipping the throttle, it sounded as tho the bike was cold!!..almost like it was missing..not any more tho, wooooooooooo

LotusSevenMan · Post by **LotusSevenMan** » Mon Jan 28, 2008 8:32 pm

Large manufactures spend loads of development dosh getting the best they can out of a bike for production and performance and 'we' spend loads fcukin' it all up!!!!!

Ah well, we like to fiddle about with 'em don't we!!!

patty · Post by **patty** » Tue Jan 29, 2008 4:11 pm

well tried her just out the back this afternoon ,seems better no coughing,so not to bad at the mo. will have to give her a proper run,but so far so good

pat.

Kitch · Post by **Kitch** » Tue Jan 29, 2008 5:51 pm

Just to add mine runs beutifully with a K&N and Dynojet now Roger has set it up.

patty · Post by **patty** » Tue Jan 29, 2008 9:09 pm

kitch,
just out of intrest how much did roger charge you to set it all up
???

pat.

Kitch · Post by **Kitch** » Tue Jan 29, 2008 9:34 pm

Its gonna vary depending on what parts you need and what you need doing.

Best to ask him really.