Planet Minis

Reebo

I have a stock carb stock engine. I cant seem to get the bike to even run long enough to warm up.

I have the fuel mix out 1.5 to start. what is a good starting point for the idle speed?

With different adjustments , the engine starts a little differently , but for the main part , I start the bike with the choke on , and it idles hight for about 10 seconds then dies. If I try to turn the choke off a little, the engine slows down and stops immediately.

any suggestions ?

PS this problem started happening after the first start in 6 or 7 months, after starting it for the first time I was able to drive it around the block, but as soon as I got back the engine stalled.... these troubles ever since..

arlindsay1992

Clean it. If it ran good before with the same adjustments then don't change them. Just take note of where they are now, take it apart and clean it. Put it back the way it was and get back to us.

Reebo

well. I tried fooling around with it again, and realised the throttle cable was sticking , so I fixid that problem , then tried my other carb.... seems to do the same thing. Starts and idles high with the choke on , then 10 15 seconds later it revs higher then lower and dies. If it try to take the choke off durring the first 10 seconds or running it dies , I can't even seem to give it a little gas and keep it going with the choke off a bit.

arlindsay1992

Check for air leaks anywhere in the intake system and also check the exhaust connection to the head for leaks.

Reebo

I know that you start the fuel screw , ie factory setting at 1.5 turn out, what is the normal range for the idle speed screw to be set at ?

arlindsay1992

Set it about 1.5 turns out also. This will be a really high idle setting but you adjust it to your liking once you get it started. It doesn't really affect performance and will not affect starting. Once you get it started and running, then adjust the idle down to a nice gentle purr.

Reebo

Ok , I'll do that eventually but like i described , the bike dies before I can turn the choke off. or when I turn the choke off. turning the choke off kills the engine, giving it some throttle kills the engine, not doing anything results in a rev drop after ideling very high and kills the engine.

What happens with a properly tuned bike . you start with the choke on , is it supposed to idle high , and get higher as the bike warms up? - at wich point i can turn the choke off ( or down at least ) .? also how long should it take for the bike to warm up ? - temp around here right now is 10 to 15 deg Celcius

Reebo

Ok , so today I cleaned my carb. soaked it in gas , took out all the crap. took out the main jet and the seals , and everything I could.

The long skinny jet ( I think the pilot jet ) is that not meant to be removed ? I sprayed carb cleaner through it - came out the other side.

I sprayed carb cleaner through all the passages, put it back together, put on the bike.
Put in a new spark plug (gapped it )

turned the fuel mix screw out to 1.5 turns, the idle screw 1.5 turns - no start.

then I turned the fuel screw out to 2 , got it to fire a couple of times - 2 or 3 seconds then it died. I then tried some different settings with the idle screw, and haven't been able to get it to start since.

arlindsay1992

Are you sure the is timing set good? Also check for air leaks at all intake connections.

Reebo

I'll check the points. Im brand new to points. I read the manual on how to check them . I dont have a continuity light but I do have a little multi meter. - can I use that instead , also.... how do i do that? Im checking for resitance right ?

Reebo

well , I tried to get in there with a feeler guage , and can't seem to get even the smallest feeler to get in between the two ( .... things where you are supposed to put the guage) -

can it only be checkedd when the F lines up with its mark ?

arlindsay1992

At the F mark the points should be BARELY opening. At the T mark is where you measure the gap. If you got the manual, it should tell you the point gap because I don't know it.

Reebo

http://honda50.com/partslists/z50r-shop.pdf

pages 22, and 23 show the points system , and it referes to the f alignment durring the continuity test . page 23 refers to measuring the gap ,

Nothing mentions aligning the T to measure the gap. - damn manual - what the hell ?

thanks

Reebo

well , this is rediculous but, ( and thanks for all the help - I checked timing , its good. )

In checking for gas , and having a bit left and figuring it was cool , it was not .
I put the petcock to reserve to use up all the gas and found that that was the very problem. - no gas , my bad.

thanks again,