I really neglected the rig over the winter. Late fall it started to run pretty badly and I've had some electrical gremlins with the lights/etc…..between that and having too many Datsun/Nissan's to tinker with (not to mention now that I took the top off and have no plans to put it back on any time soon its not much of a winter rig) ……that said I finally decided it was time to get back to work on it so I could enjoy it the rest of Spring-Autumn.
I thought initially maybe it was a timing issue…..upon inspection this was an issue…..fixed it….didnt fix the problem (backfiring through manifold and loss of any meaningful power)
Next I opened up the distributor cap to inspect and there was quite a bit of corrosion inside and a curious little bit of what looked to be possible carbon tracking but couldn't tell for sure……cleaned everything up which helped a lot with the vac advance arm and over all the idle got much better…..but the backfire persisted.
Ok…..so lets check the compression……150, 145, 30 (holy shit), 150, 40

, 150…..holy shit….not feeling good. Ok…lets pull the cover and look at the valves. Open it up…and wow all but 2 of them were TIGHT with no discernible gap….ok…got this al sorted out….compression test again all 140-150

AWESOME. We should be in business now…..it starts on the first turn, idles like a CHAMP. YES. NO.

still backfiring.
Ok. Lets pull the weber apart and inspect it a little more….it had some crud but nothing too crazy……cleaned and rebuilt it anyway. Problem persists.

Ok….think. What am I missing. I finally decided to look further into the distributor issue…..which I didn't really think could be the issue because it was just running so good ad idle and low RPMS. I will try anyway. As I look closer I can see that it is definitely carbon tracking as you can see where its been arcing between 3 points and probably throwing off the firing order quite a bit….I disconnect the coil wire from the distributor and the first 2 inches or so are fried to the point of being brittle and crumbling…..fortunately after the first 2 inches the wire is good. After some scrambling I finally realize that I have a shiny NOS water proof cap and rotor and install it. I turn the key….slowly creep out of the hangar

….I press the accelerator and

FINALLY all is well.
I probably should have trouble shot it and found this culprit sooner….maybe were I a mechanic by trade I would have….that said everything I found really needed attention anyway so…..I cant really complain about the outcome
