Question about 1993 kawasaki ZZR 250
Bike will only run with the choke on and it is still running rough, when you shut the choke off the bike dies, it has been sitting for a while, what could it be
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: wont run /idle
i'd start with removing the carbs and giving them a thorough cleaning as when bikes sit for so long, the carbs begin to get gummy/varnished from the old gas.
check for blocked holes in the pilot jet & main jet and look for "hard & dried up" gas in passages. be careful of the float bowl gasket as to not tear it or you will need a replacement.
Posted on Mar 06, 2009
SOURCE: Bike won't stay running
the knurled knob behind the choke knob at the outside of the choke mounting bracket is loose. Turn the knob to tighten the friction on the choke cable just enough to hold the choke in position until you push it in. Vulcans are cold blooded but the choke should remain in positin until you push it in.
Posted on Apr 19, 2009
This is what happens when a motorcycle sits for a long time without being operated (sometimes in as little as six months of storage). Over time, the gasoline in the carburetor evaporates and leaves behind a tar like varnish which pluggs up the very small openings in the carburetor passageways and jets.
The carburetor will have to be completely disassembled and cleaned. Soak all of the metal parts in a commercially available carburetor cleaner (be sure to follow the directions and all warnings that come with it). Do NOT place any plastic or rubber carburetor parts in the cleaning solution, they'll be ruined.
Upon reassembly, be sure to blow out all of the carburetor passages with compressed air. Same with the carb jets, blow air through them and then hold them up to a light and make sure you can see through them.
Tip: I have found that Simple Green is capable of removing fuel varnish from carb parts with an overnight soak.
Posted on Nov 01, 2009
It sounds like your bike has been sitting in storage for an extended period of time (a year or more) - and the carburetors are plugged up. If this is the case, they will need to be completely disassembled and cleaned out.
If it hasn't been sitting (and the carbs aren't plugged up) then check that all of the normal tune-up items have been performed, especially valve adjustment, oil and filters, spark plugs, etc. If this fails to produce positive results, perform a compression check on the engine. Each cylinder must be able to produce at least 140 psi of compression in order to run and idle properly.
Posted on Nov 07, 2009
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