JT510Fan Posted March 16, 2023 Report Share Posted March 16, 2023 Hey everyone, I need some help diagnosing what is wrong with my engine. attached is a video of the engine running and the exhaust. https://youtu.be/DwWEK47hFRY Quote Link to comment
Bleach Posted March 16, 2023 Report Share Posted March 16, 2023 I have a few ideas. Loud rocker arms - warm up engine, then take off the valve cover and do a standard valve clearance adjustment. See FSM for specs High idle - warm up engine and adjust idle speed, then idle mixture, then again idle speed. See FSM for suggestions on idle Exhaust noise - popping is just a missfire. Replace sparkplugs after adjusting idle. - Check all bolts that hold down the carb and that hold the intake manifold to the head. Make sure there are no vacuum leaks - Now check ignition timing Quote Link to comment
datzenmike Posted March 16, 2023 Report Share Posted March 16, 2023 Does it run smoother with the choke more on? There is no replacement time for ignition components like the wires cap and rotor. If they look bad... they are Easy stuff first... Check the points are in good shape and the gap around 0.020" Firing order look ok.... 1342. Timing 50 I'm not sure on this so check owner's manual Pull plugs and post a picture of them. Gap should be 0.032". Are the front two or back two different in color than the other two? Harder stuff... Set or check the valve lash. 0.008" intake and 0.010" cold or 0.010" and 0.012" hot. I suspect a tight exhaust valve. After setting lash check the compression. Quote Link to comment
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