Re: 1975 evinrude 9.9 fuel pump prob?
Sorry guys, I lost an hour of typing & uploading when this site "timed-out" on me while posting a reply, so I just went to sleep last night.
Compression test results are: COLD: #1 72psi; #2 75psi. WARM: #1 70psi; #2 70psi. However I don't believe these are reliable numbers cause I was forced to back the gauge out a bit. It was hittin the pistons. The o-ring was still sealed, but I'm not sure how well. I need to find another guage.
Also, I believe the spark test, which it passed, both warm & cold, is also unreliable. It will immediately restart after it dies, so I'm thinkin by the time I get the tester on it, its cool enough to try again. I discovered, early yesterday, that the driver coil laminations are seperating. In the pic I placed pieces of paper into the gaps for clarity. Even though these get bolted down, I'm thinkin this may be a source of spark failure at high temps. The points are new & cleaned with naptha, the condensers & secondary coils are also brand new with new wires & plug boots. Several sets of new plugs haven't helped either.
I checked the evinrude parts diagram for P/N 38 & I didn't see it. I can tell you that I use a rifle boresighting attachment to put visible light through every orifice in the carb. The parts that don't come in the kit are well scrutinized & cleaned. The only thing I didn't do was to pull the lead shots out, but those passages did pass compressed air. There are two pics of the carb needle below. I took it out to show you the tip. Maybe you see something I don't. Also, yes the needle seat was replaced, & yes, the old one was fished out first, but thanks for askin. No offense taken, cause at this point, I think it's probably somethin stupid like that too. I have also checked the bowl gasket for clearance.
One thing I found is that for some reason I chose to lubricate the friction bearing between the two plates! I always do a good job of it too! I took it all apart yesterday & cleaned it all off with carb cleaner. No residue left & dried it in the sun. This was before I ran all the day's tests, or made the new vids.
In the first vid, cold start, it may not have been as cold as I thought, but you can see that it starts easily with no choke necessary. In vids 1 & 2 you'll see that chokin it kills it almost instantly. I'm not sure if the third vid is good enough, but, it looks like, to me, that the timing is somehow moving a little bit from right to left just before it dies. Advancing itself, I think? Anyway you'll have to look closely, & I'm still not sure it can be seen in the vid. I'll go out & make another one today just in case.
I've gotta go out of town Friday, probably for the weekend, but I'll be back ASAP. I'll read posts from my phone, if I can figure out how, but IDK if I'll be able to answer. Never done it before.
cold start:
http://www.youtube.com/watch?v=BxXy0xc8Fl8
warm start:
http://www.youtube.com/watch?v=JyHPpNt6O-I
Timing:
http://www.youtube.com/watch?v=FtkK4KePHbA
AlTn, I have one of those old Ted Williams motors. Mine's a 1974, 7.5hp. They're lots of fun when they run.
As always, Thanks yall!
