OK - starting about a month or two ago, I noticed that I would occasionally lose engine power when driving on the highway. It would go away for a second, then come right back up. Sort of like a hiccup. I wouldn't even lose much speed, but I can feel it because the gas pedal gets a dead feeling all of a sudden, and the engine quiets down. It happens almost every day now at least once, sometimes twice.

I thought it might be a fuel filter getting clogged, so I changed those. That led to my primer pump cratering (I think), and the engine not starting. I replaced it with a new pump and now I'm up and running again. But I still got some hiccups on the highway while driving to work today.

Am I getting air in the fuel injection system somewhere? Where/how do I look next to diagnose what's going on?

thanks,

Charlie

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Charlie

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'66 VW 1300 96K miles
'97 E300D 239K miles
'85 300D 203K miles (sold Sep 2012)