My starboard engine is a 1991 Crusader LH 454 CID.
I have 1200 hours so I performed a compression test when doing tune-up.
1 148
3 135
5 135
7 140
2 145
4 144
6 144
8 147
Question 1: What is the danger to running this season (another 100+ hours) and waiting until the winter season to redo the top half?
Also I have a new snap-on advanced timing light so I was able to take a look at the my ac delco e.s.t. advance curve.
The light flashes every other signal so I should have been able to get a good reading. The curve matched the manual that I have until I got up to 3200 RPM and above. At that point I had the mark on the HB bouncing back a forth about 20 degrees!
Question 2: What would generally cause that? I replaced cap a rotor. Replaced new proper gapped plugs. I replaced wires two years ago. Looked scary to see that.
I have 1200 hours so I performed a compression test when doing tune-up.
1 148
3 135
5 135
7 140
2 145
4 144
6 144
8 147
Question 1: What is the danger to running this season (another 100+ hours) and waiting until the winter season to redo the top half?
Also I have a new snap-on advanced timing light so I was able to take a look at the my ac delco e.s.t. advance curve.
The light flashes every other signal so I should have been able to get a good reading. The curve matched the manual that I have until I got up to 3200 RPM and above. At that point I had the mark on the HB bouncing back a forth about 20 degrees!
Question 2: What would generally cause that? I replaced cap a rotor. Replaced new proper gapped plugs. I replaced wires two years ago. Looked scary to see that.
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