Posted by T.L. on January 22, 1999 at 22:00:31:
In Reply to: May not be the carb after all..... posted by Sparks on January 22, 1999 at 13:49:30:
A '73 Maverick 302 uses a Motorcraft BRF-42 plug, although other brands may use a different part number. These should be easy to cross-reference in the book at the parts store. Are you SURE you have the correct firing order. Check it again, it shouldn't be backfiring...
: I decided to start over again from the beginning and retrace my steps. Spark plugs are cheap so I went to buy 6 more(had 2 new). I had just bought a straight replacement for the one in my hand last time. It never occured to me to do what I always do in carpentry NEVER trust the last worker's measurements. The ones I bought today (all 8) are autolite 45's.
: The ones in the engine now are 46's. I hope that this has been my problem all along. It seems the last mechanic used what he had and then decreased the gap. I'll post an update on Monday.
: 1973 302 V8 2bbl. Any further comments on the plug situation? T.L. what do you think? Could this be the culprit(s)?
: BTW, I did cap off the EGR valve and its related vacuum hose.Removing the valve is a little more involved that I can do right now. I did not notice any change, but I'm hoping the plug change will allow me to move on to better things.