Fixed a Secondary System Vacuum Leak - ZR-1 Net Registry Forums

QB93Z · 07-19-2009

We just got done with a plenum pull to locate a secondary vacuum system leak on George's (LT5-1935) recently purchased, 1990 ZR-1. Everything under the plenum was in excellent condition. All the tubing and fittings were tight. The leak was from the Secondary Actuator Valve. We repalced it with a new one and he was on the road in under an hour and a half.

He returned from the test drive with a big grin.

It was the first time he had really experienced the LT5 in full power mode.

BTW, the 1990 plenum pull is easier than the 1993, 1994 plenums I have done. There are less vacuum connections and electrical connections under the plenum.

Jim

07-19-2009	#1
QB93Z Join Date: May 2007 Location: Westminster, Maryland Posts: 3,684	Fixed a Secondary System Vacuum Leak We just got done with a plenum pull to locate a secondary vacuum system leak on George's (LT5-1935) recently purchased, 1990 ZR-1. Everything under the plenum was in excellent condition. All the tubing and fittings were tight. The leak was from the Secondary Actuator Valve. We repalced it with a new one and he was on the road in under an hour and a half. He returned from the test drive with a big grin. It was the first time he had really experienced the LT5 in full power mode. BTW, the 1990 plenum pull is easier than the 1993, 1994 plenums I have done. There are less vacuum connections and electrical connections under the plenum. Jim