Yes. Unburned fuel from too much air. The air from the starved flame prolongs the burn, and fires the next intake stroke, causing a backfire. In a normal combustion process the flame front puts out the fire, by using all the air. A rich condition runs out of air, and overly lean has too much air, and not enough fuel. What comes out the tailpipe looks, and smells the same. With that distributor, and pump, thus truck never ran this smooth for me.
Hi. What did you use to cut the access hole? I've had my 99 Tahoe for many years. It's on the 3rd pump. It went out last night. With a full tank of course. I'm considering this even though it has no rust. But it is sitting out in the snow and rain. Thanks a ton!
I have a 98 K2500HD and the fuel pump quit when I went to move it to plow snow in December. I cut a hole in the bed similar to this with a thin cutting wheel in a grinder to change it last week. It was so nice to hit the key and it started right up.
If this work was known to be done and in some states that are very strict or picky with the annual inspections this cutting your floor to do that job would equal a fail, unless the proper mending of the cut piece of floor was done right.
@@RustBeltAuto yeah I guess it would be hard to know it was done that way but if for whatever reason they found the floor was cut open and not properly sealed, that's clearly a safety violation.
@@fordwindsor351 i worked on a lincoln once. Took over 2 hours to drop the tank to find a hole cut under the seat. The dealer did it years before under warranty.
You mean one of these? www.ebay.com/itm/355115515439?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=lkyveuoqtpe&sssrc=4429486&ssuid=QXZTigxVTHS&var=&widget_ver=artemis&media=COPY
As a guess, normally if it is pegged over full there is an open circuit (broken wire/bad connection). Under E, or stuck in the same spot is a sender in the tank. If it is erratic, and doing senseless things like it is posessed, there is probably a gauge issue.
@@RustBeltAuto Sorry bout that, I was being lazy and did do what I learned over the years. It was plain as day using my experience and power probe. Thanx for the vid my fellow tech💯
