Hi Guys,
To give you some background as to the problem I am currently having let me start with some history. Approximately 2 months ago I installed long tube headers, new plugs, (motorcraft AGSF52C) and wires. The engine was misfiring for a while and it would typically occur if I was just cruising along with the rpms anywhere between 1200 and 1900 rpms. It never really missed as far as I could tell if I was on the throttle a tad harder. I decided to change the fuel filters in my carburetor because I had assumed that they were clogged and that was why I was misfiring for so long.
So I go to remove the old filters from the carb and come to find out that there were no springs in there at all so whether or not it was really filtering fuel is up for debate. While we're at I got my engine timed to 10 degrees BTDC with a timing light. The mechanic who was working with me on this stuff noticed that my ignition coil looked quite worn out/not supplying required voltage and asked what the spark plugs were gapped at. I had them gapped at .050 before but he suggested going to .035 because of the poor condition of the coil so we did. I go to drive down the road and the car is missing worse than it was before in that same RPM range I mentioned above.
I was wondering if you guys would suggest regapping the spark plugs to a larger gap because what I am thinking right now is that the gap as it currently sits is not large enough to effectively burn all of the AF mixture in the cylinder. One last thing is that it does not miss hardly at all if I am accelerating at a bit of a quicker rate but if I am slowly making my way through the gears it starts to miss like crazy.
Any help is much appreciated.
Thanks,
Andrew
To give you some background as to the problem I am currently having let me start with some history. Approximately 2 months ago I installed long tube headers, new plugs, (motorcraft AGSF52C) and wires. The engine was misfiring for a while and it would typically occur if I was just cruising along with the rpms anywhere between 1200 and 1900 rpms. It never really missed as far as I could tell if I was on the throttle a tad harder. I decided to change the fuel filters in my carburetor because I had assumed that they were clogged and that was why I was misfiring for so long.
So I go to remove the old filters from the carb and come to find out that there were no springs in there at all so whether or not it was really filtering fuel is up for debate. While we're at I got my engine timed to 10 degrees BTDC with a timing light. The mechanic who was working with me on this stuff noticed that my ignition coil looked quite worn out/not supplying required voltage and asked what the spark plugs were gapped at. I had them gapped at .050 before but he suggested going to .035 because of the poor condition of the coil so we did. I go to drive down the road and the car is missing worse than it was before in that same RPM range I mentioned above.
I was wondering if you guys would suggest regapping the spark plugs to a larger gap because what I am thinking right now is that the gap as it currently sits is not large enough to effectively burn all of the AF mixture in the cylinder. One last thing is that it does not miss hardly at all if I am accelerating at a bit of a quicker rate but if I am slowly making my way through the gears it starts to miss like crazy.
Any help is much appreciated.
Thanks,
Andrew