front cylinder doesn't fire

zoran zv30 at sbcglobal.net
Mon Aug 24 23:21:12 PDT 2009


there is one more connection, that wire exiting CDI.


Thanks

Zoran Vujasinovic
Twin Works Factory
775-786-4881
www.twfracing.com

----- Original Message ----- 
From: "Randy Grein" <randygrein at comcast.net>
To: "Suzuki SV650 Mailing List" <sv650 at micapeak.com>
Sent: Monday, August 24, 2009 10:19 PM
Subject: Re: front cylinder doesn't fire


> So have I. (grin) That's why I tested a complete coil - different  wire, 
> cap, everything. Same symptoms. What worries me is that there's  another 
> connector somewhere else that could be loose, but after  checking the 
> schematics I think that's unlikely and the problem is  right there at the 
> coil. I'll check more later, getting ready for race  weekend.
>
> Randy Grein, WMRRA #141
>
> On Aug 24, 2009, at 9:53 PM, Ernest Montague wrote:
>
>> 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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