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I am awakening a 1750 SPICA motor that has been asleep for twenty years. Rather quickly we were able to get it running but I am not developing power. When I pull the plug wires I get no rpm drop in two and four. I am getting spark. Even so, I have replaced the plugs and the wires but no change. Next I cracked the line at the injector to verify that I was geting fuel - I am. Then I pulled the injector and connected it back on the fuel line to see if I was getting fuel out of it - I am. (Pulled the plugs and #2  were wet - the others were perfect). Then I did a dry compression test. All cylinders came in at between 170 and 175. Not super but nice and consistent. I don't have a set up to do a leak down test but that seems to be the next step. A flashlight down the spark plug hole didn't reveal anything unusual.
There are no unusual noises that would lead me to think that I've got a valve floating around. In fact, it idles quite nicely and even revs freeely without under load.
I can't think of anything else to do other than to walk back through eveything again. Anybody got any suggestions? If I can't find anything wrong my next step will be to pull the head. I really hate to do this because the motor appears to be nice and tight, no leaks, no smoke out the tail pipe.
Thanks,
There are no unusual noises that would lead me to think that I've got a valve floating around. In fact, it idles quite nicely and even revs freeely without under load.
I can't think of anything else to do other than to walk back through eveything again. Anybody got any suggestions? If I can't find anything wrong my next step will be to pull the head. I really hate to do this because the motor appears to be nice and tight, no leaks, no smoke out the tail pipe.
Thanks,