'87 Suzuki DT55 erratic idle

Al Mottola

Seaman Apprentice
Joined
May 1, 2005
Messages
36
Hello:<br /><br />This motor has had one problem after another, each time I fix a problem, I find another. Now the idle speed is completely erratic. Spark is good, gas is new, carbs are clean, compression is OK. Is there any chance that there is a leak in between the cylinders? This in theory could cause this problem if a cylinder is drawing fuel from another. <br /><br />Also, this engine does not like to run under load. Runs above idle OK until you out it into gear. I do not know if the two problems are connected.
 

Al Mottola

Seaman Apprentice
Joined
May 1, 2005
Messages
36
Re: '87 Suzuki DT55 erratic idle

One more problem found. The idle switch which feeds a signal into the electronic control module does not have any affect. Are all these problems pointing to a bad electronic ignition module?
 
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