ignition advance
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Senior Member
Joined: Aug 2005
Posts: 787
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From: Denver, Colorado
ignition advance
My 1990 feels sluggish below 4K, so I grabbed my old timing light and checked the timing advance. It's on "F" at idle, but stays there until around 4K then advances to the advance line. I don't think this is normal. I think it should be advancing somewhat between idle and 4K. Has anyone checked their timing with a light? Does it advance smoothly or jump at 4K? Do I need a new spark generator?
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Joined: Jan 2006
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From: Sweden
RE: ignition advance
ORIGINAL: slowpoke
My 1990 feels sluggish below 4K, so I grabbed my old timing light and checked the timing advance. It's on "F" at idle, but stays there until around 4K then advances to the advance line. I don't think this is normal. I think it should be advancing somewhat between idle and 4K. Has anyone checked their timing with a light? Does it advance smoothly or jump at 4K? Do I need a new spark generator?
My 1990 feels sluggish below 4K, so I grabbed my old timing light and checked the timing advance. It's on "F" at idle, but stays there until around 4K then advances to the advance line. I don't think this is normal. I think it should be advancing somewhat between idle and 4K. Has anyone checked their timing with a light? Does it advance smoothly or jump at 4K? Do I need a new spark generator?
The ignition pulse should come like 5 or 10 degrees (BTDC) at 1000 rpm and smoothly increase to about 40 degrees advance at 5000 rpm (or higher rpm depending on version). The spark generator is fixed, and the variable advance function is within the ECU.
Thread Starter
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Senior Member
Joined: Aug 2005
Posts: 787
Likes: 0
From: Denver, Colorado
RE: ignition advance
They don't call it snail mail for no reason. Plus, Colorado is in the middle of the country. I'm driving my wife crazy, because every time I come home I ask about the mail or go look myself. I will let you know when it comes. Actually, I'll put it on the bike first, test ride it, then let you know that it came.
Senior Member
Joined: Jan 2006
Posts: 1,149
Likes: 0
From: Sweden
RE: ignition advance
ORIGINAL: slowpoke
They don't call it snail mail for no reason. Plus, Colorado is in the middle of the country. I'm driving my wife crazy, because every time I come home I ask about the mail or go look myself. I will let you know when it comes. Actually, I'll put it on the bike first, test ride it, then let you know that it came.
They don't call it snail mail for no reason. Plus, Colorado is in the middle of the country. I'm driving my wife crazy, because every time I come home I ask about the mail or go look myself. I will let you know when it comes. Actually, I'll put it on the bike first, test ride it, then let you know that it came.
To bad for you, hope it has not been ranked as a dangerous ignition device and destroyed [
]
Thread Starter
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Senior Member
Joined: Aug 2005
Posts: 787
Likes: 0
From: Denver, Colorado
RE: ignition advance
ORIGINAL: BackTalk
John
You probably already did this, but have you tried Steel's for the ignition part? They have surprised me many times with parts for my 87 over the years.
BT
John
You probably already did this, but have you tried Steel's for the ignition part? They have surprised me many times with parts for my 87 over the years.
BT