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Old 07-12-2012, 08:27 AM   #1
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Joined: Apr 2011
From: Seattle,WA

I Ride: 2004 Yamaha FZ1
Bike wont start
Coming from the St. Helens ride, I went home then just parked the bike for a few days. Coming back to it it cranks but will not start. I have already tried draining carbs twice and changing out to new plugs, but still no. I'm starting to think its bad gas, but I've already went through 3/4 of a tank without a hitch. Ideas?

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Old 07-12-2012, 08:45 AM   #2
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Joined: May 2009
From: Clackamas, OR

I Ride: 04 Ducati 749s, 02 Aprilia Scarabeo 150, 76 Kawasaki KZ750 (trade); 73 CB500; 82 CSR305
battery? tip-over-sensor (if any)?

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Old 07-12-2012, 08:47 AM   #3
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Joined: Apr 2011
From: Seattle,WA

I Ride: 2004 Yamaha FZ1
Batteries fine, i left it on a tender all night. No tip over sensor, bikes in neutral with clutch in and kickstand up.

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Old 07-12-2012, 09:37 AM   #4
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Joined: Jun 2012
From: Weaverville,NC

I Ride: Gsxr 750
Bike won't start..
I had to replace my stator last season...and now have to do it again..I am gonna fix it and trade it in for something brand new(Hayabusa or a Cruiser)...If you have an Ohm meter,you can check it...and if all three numbers aren't the same on the readings...that's definitely what it is...!

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Old 07-12-2012, 10:04 AM   #5
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Joined: Jul 2005
From: spokane

I Ride: other peoples when they let me, working on Honda VF750
“ Quote:
Originally Posted by NoChickenStrips View Post
Coming from the St. Helens ride, I went home then just parked the bike for a few days. Coming back to it it cranks but will not start. I have already tried draining carbs twice and changing out to new plugs, but still no. I'm starting to think its bad gas, but I've already went through 3/4 of a tank without a hitch. Ideas?
When you had plugs out did you grd one to see if it was firing at all?
what was condition of plugs when you pulled them - black, greyish, wet w/fuel, etc...

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Old 07-12-2012, 10:43 AM   #6
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Joined: Apr 2011
From: Seattle,WA

I Ride: 2004 Yamaha FZ1
Yea i checked both for spark and both were good. The plugs were a nice tan color, but i just swap plugs because I have a feeling they were on the bike since 2004.
Gonna drain the gas and fill it with some fresh gas, hopefully it'll solve the problem.

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Old 07-12-2012, 11:03 AM   #7
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Joined: Oct 2010
From: Marysville, WA

I Ride: 08 675, 72 XL250, 93 PW80, 80 GS250
If you bike was cranking but not firing I would have thought the plugs would be "wet". You are not getting fuel? If that is the case i cant see draining is going to do anything for you. Is it easy to check your fuel filter?

Did you try a starting fluid? Sometimes if you can get it started it will suck the tiny crap in the carb though.

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Old 07-12-2012, 11:34 AM   #8
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Joined: Sep 2005
From: Bremerton

I Ride: 07 XB12Scg, 03 Are See fiddy one, 05 DRZ470SM, 95 FZR1040, 69 Combat Commando Roadster, 73 Commando Interstate, 67 BSA B44, 71 BSA B50
2 fiddy jets are tiny
Clean them...

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Old 07-12-2012, 03:02 PM   #9
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Joined: Apr 2011
From: Seattle,WA

I Ride: 2004 Yamaha FZ1
Its definitely the carbs being stuck. What a PITA to get them out and cleaned.

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Old 07-12-2012, 06:13 PM   #10
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Joined: Jun 2007
From: Seattle

I Ride: YZF750, HawkGT, YSR50, VT1100(parting), '73 CB350F, SV650, CB550F, CB175
Not nearly as bad as some bikes. Your rack is only two wide.

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Old 07-12-2012, 08:04 PM   #11
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Joined: Jul 2010
From: Kent, WA

I Ride: 1999 Yamaha WR400F Dirt/Sumo
“ Quote:
Originally Posted by NoChickenStrips View Post
Its definitely the carbs being stuck. What a PITA to get them out and cleaned.
Its not that hard, I have put the carbs in and out of a vulcan 500 probably at least 3 times by now, it shouldn't be that hard. You just have to make sure that everything is out of the way for you to get them out.

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Old 07-12-2012, 08:28 PM   #12
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Joined: May 2011
From: LaCenter, WA

I Ride: 2003 Copper SV1K
You guys obviously haven't done the carbs on a Ninja 250. I shit you not, the FSM states to remove the rear wheel and the rear fender. It's possible to do it without removing all that, but it is NOT pleasant and not like your typical bike. Dood's right, it's a PITA no matter how you do it............

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Old 07-15-2012, 11:57 AM   #13
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Joined: Apr 2011
From: Seattle,WA

I Ride: 2004 Yamaha FZ1
So i took apart the carbs,all the jets weren't clogged but i cleaned them anyways. Put the bike back together, still no starting.
So things i did: Drain/replace gas
Swap to new plugs/checked for spark
Cleaned carbs
Checked all fuses

Any Ideas? I haven't checked the valves yet.

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Old 07-15-2012, 01:43 PM   #14
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Joined: Feb 2012
From: Lynnwood, WA

I Ride: 1998 CBR900rr for the street and 2007 CBR600rr for the track
Ok, you have spark? Yes?

Then do you have fuel? Try starting fluid. If it starts on fluid you have a fueling issue.

Narrow from there.

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Old 07-15-2012, 07:29 PM   #15
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Joined: Jul 2005
From: spokane

I Ride: other peoples when they let me, working on Honda VF750
“ Quote:
Originally Posted by NoChickenStrips View Post
So i took apart the carbs,all the jets weren't clogged but i cleaned them anyways. Put the bike back together, still no starting.
So things i did: Drain/replace gas
Swap to new plugs/checked for spark
Cleaned carbs
Checked all fuses
Donn't know for sure, but there is carb "cleaning" and then there is real thing.

“ Quote:
Originally Posted by NoChickenStrips View Post
Any Ideas? I haven't checked the valves yet.
no. of miles might be relevent here, before diving into valve adjust.

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Old 07-16-2012, 10:36 AM   #16
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Joined: Apr 2011
From: Seattle,WA

I Ride: 2004 Yamaha FZ1
Well maybe I didn't clean the carbs that well then lol. Took out all the jets all clean, i still sprayed carb cleaner all over, through all the holes on the carb etc.

I adjusted the valves ~ 3000 miles ago with the last 300 ish miles at VERY high rpms.

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