Non starting Honda CX400 Custom

**nathan.read** · 9th August 2010, 15:43

I bought the bike a few weeks ago, it needed a new battery so bought and charged then fitted one.
It took a while to start first time (ended up having to jump start of wifes car) been going fine since.
I took the tank off to replace the choke cable (its broken and probably explains whay it was a mission to start) but decided it looked to technical for me so put it back together, and got the vacuum hose wrong on the petcock so it started but only ran on the left cylinder (vacuum hose comes of the right manifold) then stopped (right carb ran out of gas)

I have now got the vacuum hose on the petcock and fuel flows when I crank the bike. But it will no start.
I have taken the plugs out, blue sparks on both.
After cranking (in short busts) until the battery is flat there is fuel in both carb bowls, confirmed by unscrewing drain plugs

So there is fuel to the carbs and spark to the plugs, but in flattening the battery 4 times it has only fired once and only for a second.

Any ideas?

If not its onto the back of a truck and into the bike shop for a tune (and choke cable replacement)

**=cJ=** · 9th August 2010, 17:57

Perhaps try closing up the plug gap a touch?

May help the ignition to fire when the air-fuel mix is pressurised.

**nathan.read** · 9th August 2010, 18:07

Cheers

Will try that tomorrow

**2 wheeled worx** · 9th August 2010, 20:42

has the bike been sitting around long if so maby the piolet jets in the carbs could be blocked it could be just bad luck it decided to pack up once you had the tank of. quiet often a bike that has been sitting for awhile will build up crud in the carb bowls from stail fuel also any crud stiing in the tank sits right next to the tap and once the vacum diaphram opens it fills the carb. the trouble is once the bike has been running a few times the fresh fuel breaks this crud up and it gets sucked up into the jets. try removing the bowls and the jets piolet is the small one main is the one below the needle, remove these with a flat head screw driver and see if you can see through these

**nathan.read** · 10th August 2010, 17:00

Cheers, only $35 to get the bike shop to pick it up, so I am getting them to do that tomorrow, they will give it a tune, replace the choke cable and front fork seals, the bike will then be in town, saves me getting a possibl ticket getting it to VTNZ to get re-registered (the old owner didnt put the rego on hold, it expired 31/03/09, and was cancelled before I bought it) mind you for $800 I didnt still got a deal on the bike I have always liked.

**nathan.read** · 17th August 2010, 18:24

Picked the bike up today and got it re vinned etc... It was the spark plugs that needed replacing, a new set of plugs and a tune up and she is all good