***help needed gn250 motor ***

**oscar the cat** · 12th September 2006, 00:29

hi guys
i am needing some help with a gn250 motor in a go kart

cant get the thing to fire
have new plug , checked the spark looks ok , been using the car battery to jump start it but wont fire
is they any one close by , orewa , red beach way that cant give me a few pointers, payment in cash , beers or coffee etc

cheers
scotty 021978884

**KLOWN** · 12th September 2006, 00:50

I was always told that if an engine has a good spark, fuel and compression it WILL run. Also if your cheacking the spark outside of the engine (as you do) it can be sparking alright but when its in it just ain't enough. So... new fuel, new plugs and check your compression. of course it won't run if it is siezed or somthing is majorly wrong.

**oscar the cat** · 12th September 2006, 20:05

cheers for that
yes have new plug and have cleaned the tank and replaced the filter , can any one tell me what the compresion should be ? will check that out next

**KLOWN** · 12th September 2006, 20:46

looks like no one is being too helpful, i'm just posting to get it in the "new posts" search. Also I had a thought, is the fuel getting into the engine? other than that i'm not much help

**Squiggles** · 15th September 2006, 19:33

looking at my manual (theres a link somewhere on this site to download one for a gn) Standard compression is 10-14 kg/cm^3 Limit is 8

**Macktheknife** · 15th September 2006, 20:07

What year is the motor? Are you sure the fuel is getting thru?

**FROSTY:Me** · 18th September 2006, 22:34

go through your ABC's mate.
Fuel--is it getting to the motor?--clean the carb out and make sure the fuel tank is above the carb
Air.Make sure the motor can breath
Spark--make sure theres a big fat spark
Compression -no compression no go
Word of warning dude--GN250 motors mounted behind the cart driver is likely to cook up on ya

**thehollowmen** · 19th September 2006, 06:19

I can't remember from my GN, but..er

doesn't the clutch have to be pulled in?
Also, some models (but not most nz ones) came with a side stand cut out too.

**oscar the cat** · 20th September 2006, 00:10

thanks to all those with hints
have brought a running gn250 ( thanks kerry ) will look at old motor when kart has had its transplant

**thehollowmen** · 20th September 2006, 06:34

reuploaded the manual I scanned
http://rapidshare.de/files/33650929/GN250.zip

**The Pastor** · 20th September 2006, 09:39

Why a gn250 motor? you can't make a go kart with one of those it would be more like a stop kart.....

But as the others said, check the fuel air spark and compression...

**oscar the cat** · 22nd September 2006, 00:51

why a gn20 motor ? cause that is the motor that is in it when i brought it i never said i was MAKING one just had a kart with one in it , i am sure that the gn 250 will be enough to teach my ten year old the basics of karting etc, but thanks for your comment even tho like you say your just repeating what others have all readly said