Quote:
Originally Posted by LPete
FWIW, exhaust smell is caused by hydrocarbons in the exhaust (unburned fuel). It's caused by misfire for whatever reason: radical cam with lots of overlap, ignition timing advanced too far, single cylinder miss due to ignition problem, compression problem or vacuum leak (one cylinder doesn't usually make it smell that bad). A rich mixture can do it, but it has to be so rich that the engine starts producing lots of unburned hydrocarbons -- REALLY rich.
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This weekend based on what I BOLDED above:
I'm going to check my timing advance and adjust if needed.
Measure the cylinder compression and vacuum level. Question: If my washers are causing the valves to not completely close, that would show up as weak compression, right?
I'm going to adjust the carb idle mixture but I think it makes no difference where it is set.
That will give me a baseline.
Quote:
Originally Posted by PontGuy
For me, step 1 would be to get some polylocks, get rid of the washers and make sure the valves are set right. Then on to the next step.
If you are going to run a cam with some duration then you will need some slip on the converter or the bottom end will be a problem.
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I may already have polylocks installed...... remember it's been 20 years since the valve covers were off. I remember that they had some kind of Hex set screw in them.
After I do the compression test, if the numbers indicate the cylinders are not sealing up properly I'll remove the valve covers and start on removing the washers. Actually I just need to open them to figure out exactly why I put them in there in the first place.
This is AWESOME HELP GUYS!!!!!