fzr wont start?

[elimental]

Originally Posted by No Worries

Keep looking for the choke cable. Maybe the previous owner broke or removed the choke cable? Some older bikes could have a choke lever on the side of one of the outside carbs.



When you cleaned the carbs, did you take off the top covers and clean the piston/needle and walls, air bleeds, and check the rubber diaphragm for tears or holes? When you put the top covers back on, did you use Vaseline
in the groove of the diaphragm? An air leak there and the carbs won't run for crap.

confirmed! lever is on the side but it appears to be an aftermarket choke? its definitely not the OEM assembly, perhaps one from a different bike. I'll take it apart next thursday cause i'll have time then. The bike has had a yzf tank conversion so i didnt even see a petcock in there. seems like i have some restoring to do!

[elimental]

so i cleaned the carbs thoroughly, assembled everything back. turn the key fuel pump winds up and does its lil thing for a few seconds and then it stops. I press the start button and the bike sputters but wont start up. you can hear it wants to start but it just doesnt go. How much is the fuel pump supposed to pump out when the key is turned to the on position? is it supposed to be a stream, or is it supposed to just drip a bit?

[Dave]

check your fuel filter, also alot of times on a cold start with carbs it can help to stuff a rag in the tailpipe (of course pull it as soon as she fires!). the problem is fuel atomisation and sometimes that extra restriction is just what you needed. good luck!

[elimental]

Originally Posted by Dave

check your fuel filter, also alot of times on a cold start with carbs it can help to stuff a rag in the tailpipe (of course pull it as soon as she fires!). the problem is fuel atomisation and sometimes that extra restriction is just what you needed. good luck!

I put a new fuel filter in today and nothing. im gonna empty out the tank and put new fuel in and spray some starter fluid on the carbs. hopefully she'll start tomorrow.

[Gas Man]

Don't do starter fluid...

Get some seafoam if you're trying to short cut.

However, you should replace the gas. Gas can go to shit in as short as 3 weeks in the correct environment. A quick way to check is to get a spray bottle of known GOOD GAS and spray it directly into the carb like you would starting fluid when you're cranking it over. If it starts... it is either your gas or your gas delivery.

Have you checked for spark?

Also, moving this to tech... sorry I missed it before. I'll try to help the best I can over the internet... take it for what you want... Ithink I know how to turn a few bolts...

[Mr Lefty]

seafoam FTMFW

[elimental]

Originally Posted by Gas Man

Don't do starter fluid...

Get some seafoam if you're trying to short cut.

However, you should replace the gas. Gas can go to shit in as short as 3 weeks in the correct environment. A quick way to check is to get a spray bottle of known GOOD GAS and spray it directly into the carb like you would starting fluid when you're cranking it over. If it starts... it is either your gas or your gas delivery.

Have you checked for spark?

Also, moving this to tech... sorry I missed it before. I'll try to help the best I can over the internet... take it for what you want... Ithink I know how to turn a few bolts...

yes sir, good spark all across. disconnected the fuel lines and inspected them and they're good. the fuel pump winds up and pumps well. its got fuel, spark, and air. im gonna pull the plugs on her again tomorrow and re-check everything once more.

[Gas Man]

Check the plugs again... but I would lean more towards bad gas!!!

[Gas Man]

Have you pulled the air box and checked to see if all the carbs are spraying gas?

May be looking into pulling the carbs. You will need a service manual. Or take them to a dealer for cleaning and sync. And would be an ideal time to consider at least a stage 1 jet kit.

[elimental]

Originally Posted by Gas Man

Have you pulled the air box and checked to see if all the carbs are spraying gas?

May be looking into pulling the carbs. You will need a service manual. Or take them to a dealer for cleaning and sync. And would be an ideal time to consider at least a stage 1 jet kit.

ran the bike with the airbox off as well as with it on, i think they need to be synced. the throttle butterfly doesnt open as wide on carbs 1 and 2 as it does on 3 and 4. dont know how it got off sync, i didnt detach the carbs when i cleaned them a few weeks ago. I checked the maint manual, couldnt find anything on the flow chart regarding the bike not idling without the choke. maybe its cause im tired.