The Ford Barn

Mark's 37 · 09-10-2019, 07:39 PM

Today I added MMO to the gas tank, 5 ounces, then changed the oil with 5-20 Mobil 1 with about a quart of MMO. Fired it up and let it warm up then poured about 3 ounces of MMO slowly down the carb. Still an irregular fluttering but not as pronounced. I tried to upload a video of the vacuum gauge with the engine idling but couldn't get it to load on this page. I am cautious about putting too much MMO into the carb because of worry about fouling the plugs. I drove it about 4 miles afterward. I will put a few more miles and see what happens. The symptoms changed somewhat as it is more fluttering with a small cylinder drop intermittently. Not right.

09-10-2019, 07:39 PM	#20
Mark's 37 Senior Member Join Date: Jul 2015 Location: Aptos, Ca Posts: 355	Re: Intermittent sticking valve Today I added MMO to the gas tank, 5 ounces, then changed the oil with 5-20 Mobil 1 with about a quart of MMO. Fired it up and let it warm up then poured about 3 ounces of MMO slowly down the carb. Still an irregular fluttering but not as pronounced. I tried to upload a video of the vacuum gauge with the engine idling but couldn't get it to load on this page. I am cautious about putting too much MMO into the carb because of worry about fouling the plugs. I drove it about 4 miles afterward. I will put a few more miles and see what happens. The symptoms changed somewhat as it is more fluttering with a small cylinder drop intermittently. Not right.