Ignition problem, weak engine idle/low

rispalt

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May 12, 2002
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I have problem with a Suzuki DT 65 from 1986. It is weak in idle and stalles easily. As soon as I put in the gear it stops. If I succeed to start (very seldom) it runs fine on low and full speed.<br /><br />I have checked the Carburator and reed valves. Looks fine. I also checked the compression - ok on all three cylinders.<br /><br />But when I looked at the ignition it seems to stay at -10 degress in idle. It should be around 0 to +8 degrees. The idle adjustment which changes the ignition timing does not work (has no effect on idle RPM).<br /><br />Then, when I read the repair handbook I dicover that there is a function that sets the ignition to -10 during 15 seconds after start-up.<br /><br />Can it be this function that is "hanging". Would it make the engine so weak?<br /><br />I am supriced that Suzuki advance the ignition during start-up. I would have expected the opposite to get a smoth start???<br /><br />I guess if my analysis is correct its the CDI that is broken, small expense to look forward to...<br /><br />Happy for any response!! /Sune
 

fisherman0290

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Nov 4, 2005
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Re: Ignition problem, weak engine idle/low

I have the same problem,what was the solution? Thank you Jimmy
 

rodbolt

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Sep 1, 2003
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20,066
Re: Ignition problem, weak engine idle/low

for quicker starts and a fast idle most suzy motors of that era with a CDI did that, its also sign something is broke and its gone into a default. do you have a suzuki manual and a multi meter ?
 

fisherman0290

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Nov 4, 2005
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Re: Ignition problem, weak engine idle/low

no, but i will have a manual monday or tuesday,I am not sure what a multi meter is. thank you Jimmy
 

fisherman0290

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Joined
Nov 4, 2005
Messages
5
Re: Ignition problem, weak engine idle/low

One more thing, as i was serching for the sorce of the problem i found a blown fuse,there are 2 fuses that i am aware of and one seemed to be a loop two and from the starter?
 
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