front cylinder doesn't fire

Ernest Montague afm199 at earthlink.net
Mon Aug 24 21:53:36 PDT 2009


I've had bad plug wires ( cut them a half inch shorter and screwed them 
back on the post), bad low voltage lead caps at the coil, and bad 
coils.


On Aug 24, 2009, at 9:48 PM, Randy Grein wrote:

> Yup - It fails the classic external spark plug test - use a spare 
> plug, ground it against the engine and look for the spark. It's dark 
> now so I repeated and discovered one of the leads was loose. It helped 
> when I tightened that connector up (with pliers) but still no spark 
> until about 2000 rpm. At least I'm onto something; I'll have to check 
> a number of connections to make sure they're tight, and maybe replace 
> the sparkplug cap.
>
> Yes, sometimes talking about a problem leads to the solution...
> Randy Grein, WMRRA #141
>
> On Aug 24, 2009, at 9:32 PM, zoran wrote:
>
>> you sure it is spark missing?
>>
>>
>> Thanks
>>
>> Zoran Vujasinovic
>> Twin Works Factory
>> 775-786-4881
>> www.twfracing.com
>> ----- Original Message ----- From: "Randy Grein" 
>> <randygrein at comcast.net>
>> To: "SV List" <SV650 at micapeak.com>
>> Sent: Monday, August 24, 2009 9:29 PM
>> Subject: front cylinder doesn't fire
>>
>>
>>> Hardly the first time I've dealt with this, but before I could 
>>> always  count on it being the cap, wire or coil - or some weird 
>>> combination of  the three, and intermittent to boot. It will light 
>>> once the motor gets  to about 5 grand (making for a HELL of a 
>>> transition) but otherwise  nothing. I grabbed a spare coil and plug, 
>>> still nothing. Unless the  mounting bracket needs to be grounded ( 
>>> getting it out is a bitch with  all the cables there, I just plugged 
>>> the new one in to test) I'm out  of ideas. Anyone?
>>> Oh, this is my street ride - '02, stock stock stock, about 30k on 
>>> the  clock. It was riding fine, then dead.
>>> Randy Grein, WMRRA #141
>>>
>



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