New member, Old problem.

**Tue Nov 02, 2004 6:02 pm » Post: #1 » Download Post**

Hi all, Ive got a 91 nsr250r which refuses to start. Bought the bike two months ago and had a three hundred mile trip home with no problems. Bikes been in a shed since, due to work, weather, ect. Anyway tried to start it today, petrol on, full choke, no choke, nothing. Took plug from front cylinder, getting petrol, checked for spark, seems ok. Everything back together, still nothing. Had to leave it as temper was rising. plugs are ngk-r br9ecm ?.

Any ideas more than welcome.

**Wed Nov 03, 2004 10:21 am » Post: #2 » Download Post**

Drain the float bowls off. I guarantee it will work after you do that - Honda's don't like old fuel...
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MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball

**Wed Nov 03, 2004 1:32 pm » Post: #3 » Download Post**

Dave Ett wrote:Drain the float bowls off. I guarantee it will work after you do that - Honda's don't like old fuel...

big words dave Shocked

befor pulling your carbs apart i would make sure that your battery is 100%
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MC21SP - Roth-tax
CBR400 - track
MC21R - sold
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**Wed Nov 03, 2004 2:52 pm » Post: #4 » Download Post**

Have to agree with Monkey... never, ever, eva eva eva gaurantee ANYTHING Dave!! Someone will only hold you to it!! :lol:

Andy.
NSR-WORLD.COM

**Wed Nov 03, 2004 4:23 pm » Post: #5 » Download Post**

That's ok, he doesn't know where I live... Confused

_________________
MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball

**Thu Nov 04, 2004 1:05 am » Post: #6 » Download Post**

:lol:

Andy.
NSR-WORLD.COM

**Thu Nov 04, 2004 7:16 am » Post: #7 » Download Post**

I had starting problems once.
I turned the bike upside-down, and when I put it back to the right way up it wouldn't start, so I left it for half an hour and it still wouldn't start. Eventually throttle full-open it started.

Must've been fuel issues, but seems like strange behaviour to me.

J
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MC28 SE -sold-
MC21 with RS250 engine -for sale-
MC21 race bike -soon for sale-

**Thu Nov 04, 2004 7:54 am » Post: #8 » Download Post**

invigiator wrote:I turned the bike upside-down... seems like strange behaviour to me.

Can't argue about that statement! Laughing

_________________
MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball

**Thu Nov 04, 2004 6:22 pm » Post: #9 » Download Post**

Battery fine, drained carbs and tank, new fuel, still wont start.

Carbs now of bike and hopefully stripped and cleaned at weekend. worth a try.

**Sun Nov 07, 2004 6:02 pm » Post: #10 » Download Post**

Hi,

When the carb's are stripped, there's a "tube" that takes fuel from the float bowl to the choke, this cannot be removed but has a tiny hole at it's "top" end, make sure it's not blocked (fill with petrol and open choke), if it's blocked use brute force and ignorance to clean. You'll feel much better!

Regard's Phil

Who's bike STILL runs like a slug (sometimes).....

**Mon Nov 08, 2004 6:32 pm » Post: #11 » Download Post**

Thanks for the tip snagger. Havent been near the bike since. Was fitting upvc windows and doors all weekend. What a total b*** they were. My bike problems have got to be easier.

**Tue Nov 09, 2004 8:30 am » Post: #12 » Download Post**

Run us through your starting technique. Sounds daft but there is a certain art to it...
_________________
MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball

**Tue Nov 09, 2004 10:24 am » Post: #13 » Download Post**

Turn the petrol on. Choke about half way. Takes about ten kicks. If i touch the throttle at all it bogs down. Only been started twice from cold. When i took it home (300 miles) it started after two or three kicks whenever i stopped for fuel. Mind the engine was hot though. I use regular bp unleaded.

When you stop laughing at me being an idiot, tell us the correct way of doing things.

Donation in the post if it works(to the site of course).

**Tue Nov 09, 2004 11:14 am » Post: #14 » Download Post**

Sounds to me like it might be a bit rich then. Only needs half choke from cold, and bogs with throttle...

Have you done a compression check? If the compression is low it's a bitch to start from cold. Once warm though, all the bits expand and the comp will rise and make it easier to start.
_________________
MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball

**Tue Nov 09, 2004 1:20 pm » Post: #15 » Download Post**

First thing I would do is check the compression. If the compression is low, like Dave says, starting will be a bitch!

Next, recheck the jet settings. Is the bike stock?

Finally, make sure the air filter is clean, then balance the carbs and set the air/pilot screws.

Andy.
NSR-WORLD.COM

New member, Old problem.

New member, Old problem.

New member, old problem...