MFi Gurus

[nigel911]

I have an issue with my car - I'm guessing it's the MFi but I don't know for sure. After a run on the interstate I came off onto a minor road, the lights were red so I pulled the car up - rather than dropping to idle the engine just faltered and died. Started straight back up upon the turn of the key. This happened a couple of times today, both times after a period of the engine running at a higher constant speed. What would cause this?

I have a new muffler on the car - could this have anything to do with it?

[Grady Clay]

Nigal,

What year MFI?

The symptoms you describe are characteristic of a partially blocked filter screen at the fuel tank. This is usually from rust and debris in the fuel tank. There is a lot in Pelican archives about this.

Any other symptoms?

Best,
Grady

[nigel911]

Grady, the Mfi is the original unit from the 72. The PO had the MFi rebuilt, without wanting to tempt fate it has always worked 100% perfectly. Kind of happy the issue may not be the MFi unit.

Will search the threads on the tank filter screen issue. I'm assuming it is only affected after a high speed run because the car is 'sucking' greater amount of fuel (debris) through/against the filter?

How big a job is the tank filter screen?

Many thanks for your help.