318 Internal Vacuum Leak?
So here's an update, I ended up pulling the intake and resealed it with the gaskets under warranty. Started it up again with all vacuum ports on the TB plugged and still had the issue. After I put it back on I didn't reconnect the linkage to eliminate that as the cause. Spraying cleaner at the china walls and sides of the intake made no difference. Before I did this, Holley wanted to test the unit but it passed all the tests on their end as well as completely closing the IAC so that's not the problem. I pulled the spark plugs and attached a pic but one or two were loose enough to be taken out just by hand. Could that cause a high idle at all?
My neighbor suggested I do a compression and leakdown test to make sure the valves were ok so I'll probably do that later today just because as well as another smoke test. Would anything like a cracked valve or something cause a high idle? I'm really at my wits end with this because it's been down since December and I feel like every test comes back fine but the problem still stays.
So here's an update, I ended up pulling the intake and resealed it with the gaskets under warranty. Started it up again with all vacuum ports on the TB plugged and still had the issue. After I put it back on I didn't reconnect the linkage to eliminate that as the cause. Spraying cleaner at the china walls and sides of the intake made no difference. Before I did this, Holley wanted to test the unit but it passed all the tests on their end as well as completely closing the IAC so that's not the problem. I pulled the spark plugs and attached a pic but one or two were loose enough to be taken out just by hand. Could that cause a high idle at all?
My neighbor suggested I do a compression and leakdown test to make sure the valves were ok so I'll probably do that later today just because as well as another smoke test. Would anything like a cracked valve or something cause a high idle? I'm really at my wits end with this because it's been down since December and I feel like every test comes back fine but the problem still stays.