Need help

[Jens Eskildsen]

Theres a passage in the carb-bowl for the choke system, it could be plugged with crud.
People seem to miss this when they clean the carb.

[Calum]

I'd check the spark plug first.

If you can get it fired up, but takes a long time, chances are it is the heat in the bote helping it fire up not the lack of fuel.

Take the plug out and test the spark.

Heat the plug up and refit it and kick her over, if it starts when the plug is hot but not cold then there is your answer.

[andrewj1680]

@calum tried a new plug But still no go once it's warn it's first kick everytime it's just getting it started first thing, choke seems to help so it must be working as it won't even try to start without it

[Calum]

The headgasket isn't blown is it?

[andrewj1680]

I don't think so it's not getting hot or pressurising or anything

[Calum]

It's possible it could be a weak spark, worn HT leads or coil would do that.

I'd like to think that if you can get it running fine when it's hot, then it is unlikely to be the fueling system and sounds more like an ignition fault.

[Darty]

If it's difficult to start on choke, then richen the Pilot circuit then?

That will determine the fuelling situation.

A 25 is standard for TM28ss. I use a 27.5 pilot jet at the moment.

• best to Check the coil out.

[andrewj1680]

I'll give it a try I have a spare there that I know is good, thanks lads Much appreciated

[andrewj1680]

Must of been a carb issue as I fitted a different carb after trying the coil and now it's fine hot or cold

[Calum]

@andrewj1680 How bizarre, sorry to have led you down the wrong path.

That's odd.

[andrewj1680]

@calum not your fault mate it did kind of point that way it was like I had to get the plug warm before it would run right I did swap coil first after first trying it to make sure it wasn't gonna start then I changed coil and still wouldn't run changed the carb and after about 3 kicks it started fine and it rides no issues, tomorrow will tell me properly if the issue is sorted but it's looking like it is

[Calum]

@andrewj1680 I know it's common fouled plugs on crossers that simply once there is heat in the combustion chamber that it they start.