strange color/deposits on distributer cap
#1
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97 4.3 blazer with horizontal distributer cap. i took it off to clean it because i have a rough idle. When i turn cap upside down it appears to be firing late because the carbon deposits/arc marks where rotor button transfers spark to cap. looks like it fires after it passes each pole. i may be wrong but it seems like it should fire as it passes the pole not after. i read on different post that these distributers wear out and I may need new one. anybody have anything they could help me with or shed some light on this for me
#2
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Well, yeah the gears on the distributors do wear out sometimes. This is certainly possible. I would likely clean the cap or replace it and see if you still have a rough idle. If it's smooth again, I wouldn't worry too much about it.
If it's still idling rough and you want to make an $80 investment a new distributor isn't a bad one, especially if you have a 97 with the original on there. They have improved them a bit since the original. I was surprised how much nicer the new one was than the one that was on my 2000.
If it's still idling rough and you want to make an $80 investment a new distributor isn't a bad one, especially if you have a 97 with the original on there. They have improved them a bit since the original. I was surprised how much nicer the new one was than the one that was on my 2000.
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