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About ryanonthevedder

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    British Columbia
  1. Puzzle under the hood?!

    Pull the fuel filter and dump the contents into a clean container, check for water. This could cause the fuel cut like symptoms you described. Yep, been there already. Dumped the filter, drained the tank and did a re & re on one carb; all clean and dry. I am going to get rid of the distributor and flat tops. Time for electronic ign and SUs, 'nuff farting around.
  2. Puzzle under the hood?!

    Nah, I don't think the coil is the issue. I ran the old coil up until a few days ago. I installed the new coil with the resistor in place at first and then w/ 12v. No change either way. I have a spark tester as well and the coil will fire over a 1/4 inch gap with ease.
  3. Puzzle under the hood?!

    Lol, thanks Zark. Yes there was a lot of gunk in that tank. Thankfully I hot tanked it, acid washed it, and gave it the por 15 treatment. No dirt in the fuel sys. Yeh Newzed, I am casting a pretty wide net. When I start the car you can definitely tell that it is overadvanced. It kicks a bit, but like a wounded dog it realizes I am trying to help and starts up reluctantly. If I retard it 10 degrees it won't even try to start.
  4. Puzzle under the hood?!

    Thanks for the tips. The coil is fine, I replaced the old one and haven't run it too much with the car hard wired. With that there was not too much change with the new coil either, although the spark was more consistent. I ran new wires from the batt. to the ballast resistor, to the coil and then on to the dist. No change, but good idea about dist. position breaking a conductor. Spark does not fail with distributor position, it just seems to quit igniting the fuel with less than 20 degrees advance. Fuel pressure was OK, 3-4 psi running, 6 with the return blocked off. There is an audible difference with each plug wire pulled while running so it is working on all 6 cyl.... any other suggestions? I am beginning to lean towards carburation again, but when I drove it the last time it really felt electrical. If there was a fuel shut off solenoid failing I might go there, but ... I dunno. Stupid flat tops.
  5. Puzzle under the hood?!

    I have read many posts and have a lot of success with my 1973 240Z, until now. I consider myself to be a pretty good mechanic and did all of the work on my car myself (with a little help from the body guru Randy), but to the problem at hand... The car sat for 15 years before I got to it, and I did a fairly extensive freshening up on it. I did the carbs (flat tops), re & re on the engine, high lift cam, ported head (N42). The ign is original points, but received all new parts. Then all the new metal. The car worked great for 2.5 months then one day a problem arose. I drove the car to work in the morning, but when I went for lunch I started the car and let it idle for a minute. It started fine but then developed a little miss. I thought maybe the carbs picked something up ( I did a lot of work to get them working well/reliably) so I took it out for a burn. The problem got worse as I went and it seemed to me that the car had developed an electrical fault. It drove like someone was switching the key on and off... Once I got back to work it died and would not restart. It has lots of spark (new coil and condenser last week) Points OK TDC verified on the dampener Cam Timing Checked OK Tank drained & new fuel (last week) Distributor drive shaft OK No vacuum leaks Front carb re & re and seemed OK, both seem to be working OK I have hot wired the coil direct from the battery to eliminate electrical/resistor problems Compression was 145 psi after break in and is the same today The only way the car will start and run is if I advance the timing to 30 or 40 degrees. When I get it running I cant retard it past 20 degrees or it sputters and dies. I am at a loss... any insight would be appreciated Cheers Ryan