Colant leak was always easy to spot because it colored the spark plugs. The heads on those old oddfires had scant material between the valve seats, and wereprone to cracking there. But, they would still run until it finally got too bad & started dumping coolant in the cylinder. Jusy my 2 sense.
Thanks for doing these videos, I am working on a CJ-3A with a 225, right now it is really hard to accelerate, will work on the points gap/ timing first. I also like Mikes carb shop!
Thanks for subscribing. I'll be doing more videos on the engine early spring. Biggest problem I had was the flattened cam lobes. I'm going to redo the compression check and look for vacuum leaks. I've got reasonable power, but a flat spot off idle and rough idle that develops as it warms.
Looks just like my 67. Sorry, I don't have any ideas for you, but I hope you keep posting your videos of the jeepster because there aren't a lot of 225 oddfire troubleshooting videos available.
Thanks, I sure will. The PCV is held closed at idle with vacuum. Blocking this with my thumb or an orifice means too much air is passing through the PCV leaning out the carb which makes sense. I had 17 " last time I measured. Should be enough, PCV itself looks fine. Next video will be with me setting up my vacuum gauge and systematically going through each one checking for leaks.
One way to check for vacuum leak an old boy showed me is to spray gas on different spots on the engine from spray bottle, being mindful of fire! I've done it several times and found a cracked head and a vacuum leak on an old hose because idle speeds up.
I had a lot of trouble with mine. It would idle nicely when cold, but rough when warmed up. Have a Rochester carb, and found that it's possible to overtighten the carb. They just need snug, and tighter makes it so the carb will deform a bit warmed up and allow exhaust in through the base gasket ........
Im in the same boat with my '68 odd fire... bogs right off idle. Trying everything. Timing, mixture. Feel like its too rich. Going to order some smaller jets hope that does it. What timing advance setting are you using?
Factory initial, maybe 2 extra degrees (6 - 8 degrees). Air/fuel is greatly affected by PCV flow. I'm going to try some different ones. Also plan to pull the intake. Keep thinking I've got a vacuum leak.
@oldbobsgarage8019 have mine running pretty good right now I have it advanced a bit more than I would like but runs the best there. How about top end noise? After I drive around for about 20 mins the top end is silent. Upon start up and once it comes back to idle for 5 mins sounds like a singer sewing machine. I was told this is normal for these. What's your experience?
