Hard starting

[Guest]

I have completely cleaned and rebuilt the carbs and some days the bike runs like a top and then other days, it starts really, really hard. I'm thinking my issue might be a vacuum leak even though the intake boots look pretty good. I haven't taken them off to check their gaskets though. Is there a way to test vacuum so I know whether to yank the carbs and replace the boots and gaskets?

[GateKeeper]

get your favorite can of this



while bike is running spray around the boots and such and listen for an increase in rpm's or a decrease....

.

[Steve]

Better yet, check the valve clearance.

Hard starting, especially when the bike is cold, is a classic symptom of tight valves.

.

[posplayr]

Also check voltage to the coils.

[Tamara]

Thanks all! I know what my weekend project is going to be now .

[Gorminrider]

as above but failing them...is it possible it is getting "flooded" (too much gas) ? open throttle wide when it won't start should test for this...

[koolaid_kid]

Not on CV carbs. Different animal.

[Chromedome]

Hard starting

Hi, congratulations, like Steve says, check the valves, id the same problim,hard starting,he had given me the same advice, I did and the change was dramatic, also,if there is a procedure to follow on your bike with the petcock vacuum before starting ? try that.