Pre-Cars and Coffee bath THE COLORS!

Seriously. I took the Honda out last night to try and figure out why the fuel starvation issue suddenly came back when I adjusted the timing. After removing the carb, adjusting the float, changing the air filter, and reorienting the carb the problem should have gone away.

But it hadn’t.

So I, I think quite reasonably, decided to put the timing back where it was before I adjust the timing. Not hard, I’d made a mark so I could do just that.

Ok... now it is idling like shit, but driving fine.

Makes sense, I guess, iirc I had to pull the idle way down when I adjusted the timing the first time. So I start cranking it up an irresponsible amount and it is still idling like shit.

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Ok... lets just put it back to factory timing because this is weird and hasn’t gone well.

Still idling like shit.

At this point I feel like I’ve entered the Twilight Zone. No adjustment of the idle screw is helping, even though the mix had previously worked with both timings. Out of desperation I tweak the idle mix and suddenly the engine is happy as a clam, running a much leaner mix than before, and gained about 1000 rpm of idle... which it a different problem entirely. Also the idle is now hunting slightly.

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Does any of that make sense? No.

If I’d somehow introduced a vacuum leak that would make it want to run rich, not lean.  Or, rather, I would expect to need to richen up the mix, not lean it out.

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Oh... and the distributor is no longer in the same spot as it was the last time I’d adjusted it.

And it still has the fuel starvation issue.

I know I’ll get this eventually and hopefully I’ll have learned something, but right now it feels like everything I do makes this car worse. Woe is me, woe is me, bellyache, bellyache, etc etc...

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Alright... now that we have my sad sackness out of the way...

Time to throw parts at the problem.

If I were guessing, I’d say the two problems are unrelated. This new timing/ mix issue could be a lot of things, but my focus is on the ignition system. The fuel starvation, however, it probably all in fuel delivery.

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The obvious thing I need to do is check fuel pressure and flow. There is no reason I am avoiding this, I just am. That will be tonight’s project. Depending on the outcome of that I’ll look into either adding an electric fuel pump, external fuel pressure regulator, or both.

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I also just found out this car has a condenser, which is a surprise considering it has an electronic ignition. Either way, that was missed when I was doing the tune up. For $20 that seems like cheap peace of mind, though, again, not certain what the point of it is.

Related, this could be a bad or failing ignition module. Similarly cheap, I have one of those on order too. Throw in a new reluctor and that should be a pretty good refresh for the dizzy. Shaft play was in tolerance and the vacuum advance was working when I checked, so I’m going to pretend all is well there, for now. New complete assemblies are available for about $200 if it comes to that.

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For good measure I’m also going to check valve clearances again. It has been ticking a bit lately and if one of the lock nuts worked its way loose, that could cause all sorts of problems.

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I will get this, but I’ll be damned if I’m going to be happy doing it.