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Author Topic: Bike won't start again  (Read 2506 times)

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prsman23@hotmail.c

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Bike won't start again
« on: November 01, 2005, 08:41:37 AM »
Hey guys maybe you can help me out a bit here. I cleaned the carbs with the yamaha carb cleaner, and I got the bike up and running. Took it out for a few miles, then had to put it back in. Today tried to start it, and its a no go. Won't even fire up with a starting fluid.
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Offline dusterdude

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Re: Bike won't start again
« Reply #1 on: November 01, 2005, 08:44:54 AM »
if it runs after the starting fluid,i would think maybe a choke issue
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mark
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Offline bryanj

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Re: Bike won't start again
« Reply #2 on: November 01, 2005, 09:07:16 AM »
Kill switch?
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Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

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prsman23@hotmail.c

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Re: Bike won't start again
« Reply #3 on: November 01, 2005, 11:54:13 AM »
It's not the kill switch, the petcock is on, and kill switch in the proper setting...  >:(
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Offline TwoTired

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Re: Bike won't start again
« Reply #4 on: November 01, 2005, 04:58:21 PM »
Pull a plug and see if it is getting spark and fuel.
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Lloyd... (SOHC4 #11 Original Mail List)
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lifeofthe88@yahoo.

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Re: Bike won't start again
« Reply #5 on: November 01, 2005, 08:27:30 PM »
i had a simular problem awhile back  and found the petcock was clogged with crap from the tank.
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prsman23@hotmail.c

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Re: Bike won't start again
« Reply #6 on: November 02, 2005, 06:31:38 AM »
How do I check if it is getting spark?
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Offline SteveD CB500F

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Re: Bike won't start again
« Reply #7 on: November 02, 2005, 07:01:59 AM »
Pull a plug and rest it on the cylinder head (reconnect to HT lead first!).
Crank engine.
You should get a big fat (blue) spark - if not, ignition problem
Is plug wet, if not then fuel problem.

Report back.
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prsman23@hotmail.c

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Re: Bike won't start again
« Reply #8 on: November 02, 2005, 07:49:36 AM »

No Big Fat blue spark, a little bitty spark comes through... do'h! uhhhh now what.
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Offline SteveD CB500F

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Re: Bike won't start again
« Reply #9 on: November 02, 2005, 07:54:30 AM »
If you only get a bitty spark at RTP (Room Temp and Pressure), it sure as hell won't spark at 100+ psi.

It would be unusual for all four plugs to fail at the same time  ??? so...

...You didn't say whether the plugs are wet.

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SOHC4 Member #2393
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prsman23@hotmail.c

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Re: Bike won't start again
« Reply #10 on: November 02, 2005, 07:57:59 AM »
Oops. I only checked one plug.... (forgive my newbieness) didn't notcie wetness but i'll check.
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prsman23@hotmail.c

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Re: Bike won't start again
« Reply #11 on: November 02, 2005, 08:28:17 AM »
Ok. I checked spark plugs 1 & 4 (my socket was too big to get the others out), and on the two i checked, not alot of spark. I checked the two plugs against the clymer manual, and the look to be oil fouled, but were not dripping wet. The oil would come off 'moist' if you wiped your finger on the plug.
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prsman23@hotmail.c

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Re: Bike won't start again
« Reply #12 on: November 02, 2005, 07:53:17 PM »
I called up my friendly local Honda shop, and told the guy about my problem. He said the spark shouldn't be gigantic, but as long as its blue im good. It's Blue so i'm good... except it won't start. I told him about the plugs looking oil fouled, he said to try and replace them and see if that helps. I replaced the outter two, but can't get to the center two. What do you guys use to get them out??? I have a socket type spark plug thingamabob. (just for a refresher it's a 1980 cb650)
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Offline SteveD CB500F

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Re: Bike won't start again
« Reply #13 on: November 03, 2005, 01:24:43 AM »
Do you have the Honda toolkit? It should have a long, thin plug spanner that will reach the centre plugs.
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SOHC4 Member #2393
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Jim Shea

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Re: Bike won't start again
« Reply #14 on: November 03, 2005, 01:41:57 AM »
I had the same problem getting to 3&4 and could not get the 'regular' plug spanner to fit, although other people say it can be done. I bought a 18mm short plug spanner from my local shop(UK) for 2 pounds and it fits a treat!
One small tip when putting 2&3 plugs back in, get a piece of plastic pipe(9mm approx) that fits over the plug top, then use this to hold the plug as you carefully screw it in.
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Offline SteveD CB500F

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Re: Bike won't start again
« Reply #15 on: November 03, 2005, 01:43:07 AM »
Jim - you're beginning to sound like an expert.

Dangerous...
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SOHC4 Member #2393
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Jim Shea

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Re: Bike won't start again
« Reply #16 on: November 03, 2005, 03:46:04 AM »
Steve,
You know what they say "a little knowledge is a dangerous thing' and I certainly have a little knowledge!  :)
Jim.
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