I own a 1999 single engine aircraft and think it is in excellent condition but on the last few flights I noticed the vacuum indicator decreasing as the aircraft climbed to altitude. Is my air pump starting to fail already?

What causes my vacuum gage to vary with the engine speed? We just replaced the air pump.

1987 Cessna 182. Vacuum gage pulsates or vibrates on start up for about 15 minutes. By the time I’m ready for take off everything looks good. Any ideas?

I have a 1979 Beech A36TC with BF Goodrich deice boots installed. After installing your CV1J4 “Clear View”, filter we noticed it getting black only after a few hours of flight.

The CV1J4 “Clearview” filter I had installed on the last pump change, reached the “Replace Filter” point at about 320 hours. Am I being sold bad air pumps or is it my aircraft?

Sigma-Tek Air Pumps & Cooling Shrouds
Not a Good Combination.

We have a Piper PA-34 with problems – can you help?

Experiencing short air pump life?
Deice systems giving you a headache?

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